Dr. William Ziegler, United States
4.1
Consultations 45
Reproductive Medicine
Doctor Introduction
Dr. William Ziegler, United States
Dr. William Ziegler is board-certified in reproductive endocrinology and infertility and is medical director of the Reproductive Science Center of New Jersey.
Dr. Ziegler completed a three-year fellowship in reproductive medicine and surgery at the University of Vermont in Burlington, where he worked with nationally recognized IVF and ICSI specialists.
During his fellowship, he helped establish the state’s first egg donor program. Afterward, he continued collaborating with university residents and fellows and assisted with several research projects.
After returning to New Jersey, Dr. Ziegler launched the first egg donor program in Monmouth and Ocean counties. He holds faculty positions at Monmouth Medical Center and Jersey Shore University Medical Center, an affiliate of Robert Wood Johnson Medical Center, and works with both institutions to organize continuing medical education for healthcare professionals.
He earned his medical degree from the University of Osteopathic Medicine and Health Sciences in Des Moines, Iowa, completed an internal medicine internship at Union Hospital in New Jersey, and then completed a four-year obstetrics and gynecology residency at the Medical Center of Delaware in Newark. As a resident, he received several teaching awards and published multiple peer-reviewed papers.
During his fellowship, Dr. Ziegler received several awards for presentations at national meetings of the American Society for Reproductive Medicine and the Society for Gynecologic Investigation. His presentations addressed stimulation protocols, age-related fertility treatment, and uterine blood flow. He later received teaching recognition from Jersey Shore University Medical Center and has authored many articles and abstracts in reproductive medicine.
Dr. Ziegler is a member of the Medical Society of New Jersey, the American Society for Reproductive Medicine, the Society for Reproductive Endocrinology and Infertility, and the Society of Reproductive Surgeons. He is a fellow of the American College of Obstetricians and Gynecologists and a diplomate of the American Board of Obstetrics and Gynecology. He also serves on hospital committees and pharmaceutical advisory boards related to fertility treatment.
A New Jersey native, Dr. Ziegler returned home to serve the communities of Monmouth and Ocean counties. He is committed to providing high-quality medical care in a caring, compassionate setting.
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Location and Hours
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Monday
07: 00 - 16: 00
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Tuesday
07: 00 - 16: 00
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Wednesday
07: 00 - 16: 00
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Thursday
09: 00 - 16: 00
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Friday
07: 00 - 16: 00
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Saturday
Closed
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Sunday
Closed
- Closed Now
Affiliated Clinics
The Reproductive Science Center of New Jersey - Eatontown, United States
- Reproductive Medicine
Hours: 07: 00 - 16: 00
The Reproductive Science Center of New Jersey - Toms River, United States
- Reproductive Medicine
Hours: 09: 00 - 16: 00
The Reproductive Science Center of New Jersey - Lawrence Township, United States
- Reproductive Medicine
Hours: 09: 00 - 16: 00
Featured Reviews
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Reviews are for reference only. Consider official information and professional advice independently.
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Ashley Wurtzel
2 years ago
Oct 29, 2024
The entire staff, including Dr. Zeigler, makes you feel comfortable and cared for. They truly know how to handle frightening and uncomfortable situations and make you feel that you are not alone. They have given me great hope in my fertility journey. Dr. Zeigler takes the time to explain things in terms you can understand, and he is very relatable. The nurses and clinical team are attentive and comforting, holding your hand at every step. I have recommended this practice to friends and will continue to do so. I have not yet completed Dr. Zeigler’s care plan, but I feel hopeful and excited. Thank you, RSCNJ. ❤️
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Brianna Reformato Reynolds
2 years ago
Oct 17, 2024
I recently began discussing my fertility journey with Dr. Martinez, and I am very grateful for his care and support. From our first appointment, he made me feel comfortable and truly listened to my concerns. Dr. Martinez is thorough, compassionate, and knowledgeable. He clearly explained every step of the process and made sure I was fully informed. His team is also wonderful—always responsive and prompt in answering all my questions and calls, which made the experience much less stressful. I am about to begin IUI and feel confident in Dr. Martinez’s expertise. I highly recommend him and his team to anyone seeking fertility care; they truly go above and beyond for their patients.
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carolynn bresley
2 years ago
Oct 13, 2024
I worked there for two weeks and was then unexpectedly fired after the billing manager returned from vacation.
I received no direction, and the women in the office were rude, cold, and not welcoming at all.
I arrived every day between 7:15 and 7:30 even though my start time was 8:30 a.m., but I was told I was late every day.
I was trained by one person who worked a certain number of days at one location, then I had to follow her to another location for a certain number of days. I became ill and had to take Friday off. Everyone treated me differently, and I worked a full day. At the end of that day, I was told I would be fired. When I started, I was never given forms to sign, and I was told they could treat it as though I had never worked there. They did not even know what to do with me. They moved me around as though I were a burden, and I felt judged and discriminated against. Please never work here.
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Jennifer Martin
2 years ago
Sep 14, 2024
Dr. Zeigler is the best doctor I have ever met! I wish every doctor were as intelligent and kind as he is. I recommend his office 100%. Thanks to him recognizing that my TSH was too high, I had a beautiful daughter at age 40. She is my sunshine, and I am so grateful to him!
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pollyanne bueno
2 years ago
Sep 10, 2024
Dr. Alan Martinez is an excellent professional who is extremely honest and attentive.
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Elizabeth Shy
1 year ago
May 3, 2025
Excellent clinician and surgeon with an outstanding bedside manner. I would recommend him for fertility needs.
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Brina Dornacker
1 year ago
Aug 11, 2025
I began seeing Dr. Ziegler after four miscarriages. I came under his care in June 2022, completed all blood tests in July, received the results in August, and was pregnant by September. From the start, my husband and I knew we would continue with Dr. Ziegler and his clinic. He is proactive, thorough, thoughtful, and excellent at his work. I love the staff, who have always communicated well. I also like the portal, which was available during my second pregnancy, and the option to meet Dr. Ziegler by Zoom/online meeting when you cannot visit the clinic. This was especially helpful with a baby at home. I cannot praise him enough. He works hard to identify the problem rather than dismissing it. Highly recommended!
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Chris M
12 months ago
Sep 25, 2025
Some nurses here are wonderful, and Dr. Martinez is kind but difficult to reach. Unfortunately, during treatment they twice tried to prescribe medication unsuitable for my wife because they reviewed the wrong chart. Both times we saw the same doctor, yet when we asked the attending physician, we were never given all the information from that visit. The nurses and assistants are also kind, but I am uncomfortable when the doctor does not perform the most important procedure and we are uncertain about the qualifications of the person who does. These issues alone are understandable because people make mistakes; we simply wanted to work with our clinical team toward the best outcome. Unfortunately, new charges appeared during treatment and prevented us from scheduling follow-up appointments, while they repeatedly harassed us after we signed. Although the financial department offered to waive the charges, they did not understand how this alienated us as patients. They are responsible for informing us of costs before we make plans involving family building, budgeting, and insurance coordination. Different people produced different amounts and charges under different titles without coordinating internally to simplify the process, explain why they were seeking payment, or provide itemized invoices. My intention is not to diminish anyone’s hard work, but to make them realize that people like my family depend on them. I appreciate everything they did for us, but hope this prompts reflection on areas where everyone can improve. Thank you for all you did.
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Marissa Gress
10 months ago
Nov 10, 2025
We were patients of Dr. Ziegler for about two years during our infertility treatment. I will always be grateful that the Reproductive Science Center gave us a chance when another fertility clinic quickly rejected us and would not treat us. I will forever thank Dr. Ziegler and his team for helping us welcome our triplets. 💕
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Maged Massak
10 months ago
Nov 16, 2025
In May, I went for the detailed semen analysis requested by my urologist. They refused to send me the results. Instead, Dr. Alan Martinez called me several times and tried to persuade me to bring my wife there for IVF, even though I had explained that I already had my own doctor. Two weeks ago, I had to repeat the semen analysis. I called several times about the report, and they eventually said it was ready but refused to send it because Dr. Alan Martinez would not sign it! This is both unprofessional and unethical. If you are considering IVF there, save your time and money.
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Jennifer Osmulski
8 months ago
Jan 17, 2026
I had an excellent consultation with Dr. Z. He patiently explained everything, answered all my questions, and made me feel completely at ease throughout the visit. I never felt rushed, and his manner was both professional and considerate. I left feeling fully informed, supported, and confident about the next steps in treatment. Highly recommended.
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Janine Bickoff
7 months ago
Feb 21, 2026
I had an excellent visit with Dr. Ziegler and the care team today. The staff were kind and patient, and Dr. Ziegler's calm, gentle manner immediately put me at ease. He was very thorough and took the time to explain everything clearly. I left feeling reassured and hopeful. Highly recommended! 💛
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Brittanny Newsom Schwarz
7 months ago
Feb 10, 2026
If you truly want to become pregnant or undergo IVF, do not come here. It will waste a great deal of your time and money.
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Mike
7 months ago
Feb 10, 2026
You sign a contract and they carefully review every term, yet they conceal all the hidden fees, which are substantial. I strongly advise against this practice. They are profit-driven and dishonest.
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Megan Schneider
5 months ago
Mar 28, 2026
Dr. Martinez and the entire RSCNJ team are amazing! I just graduated at 8 weeks, everything is going well, and I could not be happier. The clinic, staff, and care I received were outstanding.
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Courtney Donnelly
6 months ago
Mar 11, 2026
Five stars are not enough to rate RSCNJ. Dr. Ziegler and Dr. Martinez gave us what we had dreamed of but could not achieve on our own.
Dr. Ziegler sat down with us and explained the intimidating egg retrieval process in detail, making sure we understood every word before leaving. He created a protocol tailored to my situation that led to a successful retrieval.
Dr. Martinez then performed the procedure successfully. He was highly skilled and kind, and communicated well with my husband afterward.
Soon after, Dr. Ziegler performed a fresh embryo transfer that ended in a chemical pregnancy. He recommended a “recurrent pregnancy loss” workup. I asked, “Recurrent? This was the first time.” He replied, “Yes, recurrent, because I don’t want it to happen again.” Dr. Martinez performed the next successful transfer, but sadly the pregnancy stopped developing at 10 weeks.
When we returned to Dr. Z for further treatment, he hugged us, shared our disbelief at what had happened, and gave us tremendous medical and emotional support.
After several failed attempts, through no fault of RSCNJ, I asked to add a new medication to my protocol. Dr. Z supported trying it and allowed me to remain on another medication longer than most patients because it gave me peace of mind.
Dr. Z is truly one of a kind. He listens, cares, and is exceptionally thoughtful. Many times, he stayed on the phone with me while delivering bad news to make sure I was okay and understood him. He genuinely empathizes with his patients and celebrates with them too.
His nurses and clinic staff are also first-rate. They eased my anxiety countless times. They were always helpful, patient, and smiling, and they adjusted appointments around my work schedule.
I cannot say enough good things about this clinic. I will never forget the people here. Their care changed our lives. I later referred two friends, and both had excellent results.
We are not just numbers, money, or patients. To them, we are family.
Thank you for everything you have done for me and my family.
Keith and Courtney Donnelly
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Chelsea Rittenhouse
3 months ago
Jun 12, 2026
She made us feel comfortable and hopeful, and our needs were met. We look forward to continuing our fertility journey under her care!
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Amanda Gomez
2 years ago
Dec 9, 2024
Dr. Z and his entire staff are wonderful! They are very efficient and helpful. Most importantly, I finally received the answers I had been seeking about my fertility concerns.
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Karijana Kristbergs
2 years ago
Sep 9, 2024
New patient? Welcome. Scheduling? Extremely convenient. Staff? Very friendly and put me at ease. Care instructions? They break them down simply according to your needs until you understand. I entered this office with many fears and concerns, and within minutes of speaking with Dr. Zeigler, I had a complete plan to assess my fertility and plan for the future. They set appropriate expectations for processes and procedures, and everything happened exactly as described. In just one month and three visits, I was able to plan the next several years of my life. After my last appointment, I left with tears of joy, not because my health was “perfect,” but because I received real answers and clearly understood what to expect when I am ready to start my family. I am extremely grateful to all the staff at the Toms River and Eatontown offices.
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Hayley Harleman
2 years ago
Jul 23, 2024
I began my journey here last February. After 3 IUIs and a 3-year journey, I finally became pregnant, and I now have a healthy 3-month-old baby girl! It was something I once thought I would never experience. The doctors and staff worked wonderfully together and were supportive throughout the process. I definitely recommend this clinic!
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Christopher Limoncelli
11 months ago
Oct 4, 2025
We struggled with infertility for many years. With Dr. Ziegler's help, we finally achieved our dream. During an awkward moment, Dr. Z answered my call late on a weekday night and guided me through an extremely difficult process. It was my first time giving my wife an injection, and I was very nervous. He is highly skilled in this area, even when the injection process feels overwhelming. We are very grateful for everything he did for me and my family.
🍼🤍
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Amanda Brandau
9 months ago
Nov 28, 2025
We cannot speak highly enough of Dr. Ziegler and his practice and strongly recommend them. We are very grateful for all his help and guidance. He was kind and thoughtful about everything we encountered. We cannot thank him enough.
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Mike
7 months ago
Feb 10, 2026
You sign a contract and they carefully review every term, yet they conceal enormous hidden fees. I strongly advise against this practice; they are greedy scammers.
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Alycia Woolley
7 months ago
Feb 7, 2026
Information was withheld! They want to charge me so much money.
Edit*** The billing department does nothing except apologize for the “miscommunication”—they still want to charge me thousands of dollars.
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Aly Ann
7 months ago
Jan 31, 2026
Do not go to this clinic!
I signed a $6,750 egg-freezing contract that covered the entire process from beginning to end, excluding medication and anesthesia. I started the first medication protocol, but it did not work as the doctor expected, so he said he would change the protocol, add a medication, and begin an alternative plan. They then contacted me and said I had to pay another $2,250 to continue. I was not canceling the contract; I wanted to continue the process we had already started. The contract said nothing about extra charges and stated that the entire egg-freezing process cost $6,750. They refused to refund me or continue treatment unless I paid another $2,300. I am furious and disgusted with this clinic. They are greedy and deeply unethical!
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Brooke Layton
4 months ago
May 7, 2026
Although my IVF treatment ultimately failed because of circumstances beyond anyone's control, I am extremely grateful that this team supported me throughout. The clinic staff are truly outstanding: kind, compassionate, supportive, and consistently professional. They made an unexpected and heartbreaking experience more bearable.
I also greatly appreciated their respect for patients' time and their emphasis on communication. I highly recommend Dr. Ziegler, Dr. Martinez, and the entire staff for their attentive and compassionate care.
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A Google User
2 months ago
Jul 9, 2026
If you want to remove negative reviews from your Google Business Profile, please contact me through my profile; all my contact details are listed there. You can pay after the work is completed.
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Heather Hogenbirk
2 months ago
Jul 3, 2026
Dr. Martinez has performed several procedures for me, and I really like him. Every appointment is quick and efficient. I am now pregnant and very grateful to the team. However, be aware that they collect a copay every time they perform an ultrasound, but I later discovered from my medical billing statements that I owed little to nothing for almost every visit. Fortunately, all the charges were eventually credited toward my treatment costs for the next cycle.
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Rosa Amendola
1 year ago
Mar 18, 2025
I really loved this office. The doctors and nursing staff were wonderful, and I would return for a second time.
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omobolanle falekulo
2 years ago
Dec 14, 2024
A wonderful place with an excellent doctor who explains everything you need to know to achieve a good outcome. Thank you so much for everything, Dr. Martinez. God bless you; you are truly wonderful.
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afrodite kolias
2 years ago
Aug 15, 2024
I am so grateful to have found Dr. Martinez. He and nurse Marianela made my IVF journey as smooth as possible. They were not only professional but also compassionate. I always felt comfortable and confident in my daily routine and understood what the entire process required. Thank you so much.
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Christie Brimmer
2 years ago
Apr 18, 2024
I am extremely grateful for Dr. Martinez’s compassion, sincerity, and kindness, and for taking the time today to explain everything fully to us. He truly cares, and it shows. I feel very fortunate to have him as my doctor. Thank you.
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Heather
1 year ago
Jul 1, 2025
I fell through the cracks. No one cared. My results had been available for a month before I contacted them. They told me the doctor would call the following week, but the call never came. I had to contact them again. I had been attending appointments. Months have passed. I am not saying they are responsible for my health, but there was no warmth, follow-up, or concern. I was just a number. Then I received the bill.
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Taylor Everk
1 year ago
Aug 7, 2025
I posted this rating accidentally, haha... Just saying... I do not know how to delete it, sorry...
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Rasheeda Wilkins
10 months ago
Nov 15, 2025
Clean, friendly, and attentive experience. Definitely recommended!
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rosalia franqui
7 months ago
Feb 10, 2026
I had an excellent experience with Dr. Martinez and his outstanding assistant, Mariana. From start to finish, their professionalism, knowledge, and compassion were exceptional. The doctor took time to explain everything thoroughly and made sure I felt comfortable and reassured throughout the visit. Mariana was equally impressive—efficient, attentive, and genuinely kind, making the entire process easy and pleasant. Their teamwork reflects a high standard of care, and I highly recommend this clinic to anyone seeking professional and compassionate fertility treatment.
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meagan finnerty
6 months ago
Mar 11, 2026
Working with Dr. Martinez and Mariana was amazing! From the first time I entered their office, I knew I would receive excellent care and that we would succeed. I am so glad we chose RSCNJ and welcomed our little angel through them!
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A B
2 months ago
Jun 28, 2026
I love Dr. Ziegler! He is very thorough, takes the time to speak with his patients and answer questions, and has an amazing bedside manner.
I went to a different doctor before finding RSCNJ, and the experience was night and day. I used to dread my appointments because I was simply ushered in and out. Whenever I asked questions, I felt they were dismissed or the staff treated me as though I were a burden.
Dr. Ziegler and his staff are all amazing. They make me feel that my questions and concerns are valid and always take the time to ensure that I am comfortable and understand the procedures and next steps.
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MacKenzie Avallone
5 months ago
Apr 21, 2026
I would give zero stars if I could. This arrogant, profit-driven surgeon knows nothing about endometriosis. Do not let him treat your endometriosis. He may destroy your ovaries and fertility as he did to me 8 years ago. When I returned in severe pain after ablation, he removed me from his patient list and claimed there was nothing he could do. Last month I finally had excision surgery and woke up immediately pain-free. After reviewing the photos and postoperative report, I learned that during my ablation, Dr. Ziegler had actually damaged my right ovary—the cyst he removed was not even endometriosis—and I had been carrying a necrotic organ for nearly a decade. He claimed he had done everything possible to relieve my pain and preserve my fertility, but accomplished the exact opposite. He only wants to sell medications that do not cure the disease. Do not trust him with your fertility.
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Mike
7 months ago
Feb 10, 2026
You sign a contract, and they carefully review every term, yet they conceal all the hidden fees, which are substantial. I strongly advise against this practice; they are profit-driven scammers.
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Aly Ann
7 months ago
Jan 31, 2026
Stay away from this clinic!
I signed a $6750 egg-freezing contract that covered the entire process from start to finish, excluding medication and anesthesia. I started the first round of medication, but it did not work as well as the doctor expected. He said he would change the protocol, add a medication, and begin the backup plan. The clinic then told me I had to pay another $2250 to continue. I was not canceling the contract; I wanted to continue the process we had already begun. The contract never mentioned any additional fee and clearly stated that the full egg-freezing process cost $6750. They refused a refund and refused to continue treatment unless I paid another $2300. I am furious and disgusted. They are profit-driven and unethical!
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Alycia Woolley
7 months ago
Feb 7, 2026
Information was withheld! They want to charge me so much money.
Edit*** The billing department did nothing except apologize for a 'miscommunication'—they still want to charge me thousands of dollars.
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Philippa Bonsu
10 months ago
Nov 10, 2025
The clinic has a very welcoming atmosphere, and Dr. Ziegler is wonderful.
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Matthew Miller
2 years ago
Apr 12, 2024
This place is an absolute joke. The staff are terrible. I needed prior authorization for medication, but it was denied because they never sent the supporting documents, setting me back at least three weeks. It is impossible to reach anyone by phone.
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Kerri Hansen
2 years ago
Nov 1, 2024
An excellent team from day one. Dr. Ziegler carefully reviewed my chart and answered every question before I asked it. I was welcomed with open arms and compassion. Like many people, this was my second clinic. My first experience was a complete horror story: I was pressured into surgery, misled, had my time wasted, and was overcharged. Dr. Ziegler took time to explain everything that had happened to me and the next steps. My ultrasound technologist Kim is loving, caring, compassionate, and the most positive person I know. She goes above and beyond for patients. They made me feel cared for throughout these two years.
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Claire Krauchuk
2 years ago
Nov 19, 2024
Save yourself the heartbreak. I went to him with a simple male-factor issue. His fresh transfer failed, and he concluded that I had a serious clotting disorder. I was put on blood thinners and not allowed to work. I left him and went to RMA. No problems, and now I have two beautiful, healthy children. They also said I never had a clotting disorder. Dr. Ziegler loved my insurance and called it a doctor's dream. Just putting that out there.
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Autumn B
2 years ago
Dec 31, 2024
Everyone downvoting this is probably from RMA. I had a wonderful experience, and Dr. Ziegler is the best and most professional. I will be going back soon for a second treatment!
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diana geary
2 years ago
Feb 28, 2025
I would give him and his office more than 5 stars if I could. He was very helpful in every way and made our journey as easy as possible. His love of Star Wars made my husband very happy! He answered every question clearly, and we understood.
His entire office staff was very helpful and accommodating of my busy work schedule, even communicating with the pharmacy and my health insurer. Every appointment went smoothly from arrival to departure, and I always felt comfortable!
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Many years of experience
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Clinic Address
234 Industrial Way W Ste A104, Eatontown, NJ 07724, United States
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