Meet The Team

John Wagner, MD, FACOG

Dr. Wagner grew up in St. Louis, Missouri. He attended Georgetown University in Washington, D.C., where he received a Bachelor of Arts degree in Political Science. After deciding on a career in medicine, he attended the Mt. Sinai School of Medicine in New York. During his time there, he was nominated for membership in the Alpha Omega Alpha Medical Honor Society. In 1987, he also received the Alan F. Guttmacher Award -- an honor recognizing excellence in obstetrics and gynecology. He completed his internship and residency at University Hospital at Stony Brook. He was Chief Resident in 1991. During his time at Stony Brook, he received the Medical Student Teaching Award in 1990, research awards in 1990 and 1991, and the Martin L. Stone award recognizing the outstanding gynecologic resident in 1991. It was at Stony Brook that he came to know and work with Dr. Goldman. Since 1991, he has been in private practice in East Northport, NY. Dr. Goldman joined him in 1993, and they have been in
practice together since that time.

While at Stony Brook Dr. Wagner was privileged to work with one of the pioneers in laparoscopic and minimally invasive surgery. This stimulated a career long interest in and commitment to minimally invasive techniques as it relates to gynecologic surgery. For over twenty years Dr. Wagner has developed surgical methods, published articles, given lectures, presented at national meetings, and taught minimally invasive vaginal surgery and laparoscopic procedures to other gynecologic surgeons. He and Dr. Goldman were the first surgeons on Long Island to be certified by AIMIS, a national organization dedicated to recognizing and promoting excellence in minimally invasive gynecologic surgery. Dr. Wagner is currently one of a few surgeons nationwide with extensive experience in single-incision laparoscopy. This technique involves performing an entire operation through a single, small, often invisible, belly button incision. He was the first doctor in the United States to report using the single incision laparoscopic technique to perform a hysterectomy, and he is the only doctor routinely using this revolutionary approach to perform virtually all gynecologic operations. Dr. Wagner is also one of the only surgeons with experience in the laparoscopic management of uterine and vaginal prolapse. Both Dr. Wagner and Dr. Goldman are the only surgeons in the entire metropolitan area skilled in both robotic surgery and single incision laparoscopy.

Dr. Wagner has been associated with Huntington Hospital since 1991. He has served on multiple committees and has been actively involved in quality management and peer review activities. In 2008, he was elected Medical Staff President by his peers, and he served on the Huntington Hospital Medical Board for eight years. He was instrumental in developing the gynecologic residency program at Huntington Hospital. Senior
residents now come to Huntington Hospital from Maimonides Medical Center, North Shore University Hospital and LIJ to learn techniques for advanced gynecologic surgery. He is currently co-Director of Minimally Invasive Surgery at Huntington.

Dr. Wagner is an avid St. Louis Cardinals fan and enjoys tending his vegetable garden while listening to baseball on the radio. He has been married since 1983 to his college sweetheart. His four children and two grandchildren give him endless enjoyment.

Welcome to our practice and thank you for visiting our web site. Our patients are very important to us. We have developed this web site as a way to help educate our patients, to provide a service to them that would not be possible without the technology of the Internet. We are proud to say that some of our staff members have been with us for over twenty years.

Our staff will do everything possible to help you achieve the highest quality health care for you and your family. If you have any questions or need help, either with this web site or with your personal health care, do not hesitate to contact our staff and your questions or concerns will receive immediate attention. See the Contacts and Locations section of our site to find out how you can contact us.

Mary Beth White, NP, MS

Mary Beth, a Long Island native, is a seasoned nurse practitioner who has provided quality women’s healthcare to the community for over 30 years. A graduate of the School of Nursing at Adelphi University, she began her career as a Labor and Delivery nurse practicing in New Jersey and the Bronx. She received her certificate as a Women’s Health Care Nurse Practitioner from the Margaret Sanger Program affiliated with Planned Parenthood of New York City and Downstate Medical Center. Subsequently, she completed a Masters of Science as a Nurse Practitioner in the Primary Care of Women at SUNY Brooklyn. She is also an Adult Nurse Practitioner, Nurse Colposcopist, and is nationally certified in Women’s Health and as an Advanced Practice Holistic Nurse and Nurse Coach. Her professional affiliations include the New York State Association of Nurse Practitioners, Nurse Practitioner Association of Long Island and the American Holistic Nurses Association.

Mary Beth is proud to have been a member of the team that initiated the Dolan Family Health Center, Huntington Hospital’s ambulatory care center. For thirteen years, she developed and coordinated the Dolan Center’s gynecology service.

Throughout her professional and personal life, Mary Beth has sought to understand and acknowledge the mind-body-spirit connections which affect our illness and health. To this end, she has studied psychosynthesis, imagery and meditation, and, is a CranioSacral Therapist. She strives to help the women she treats achieve optimal wellness by being a guide to assist them in making well-informed choices. As faculty of the Huntington Meditation and Imagery Center, she regularly teaches other health care providers skills of Transpersonal Development.

Mary Beth lives in Huntington and has two grown daughters. When not working, she loves hiking, being by the sea, and Danskinetics.

Margaret Mierzejewski, NP

 Margaret is very excited to be part of the WGM OB GYN practice partnering with Dr. John Wagner and his staff to provide exceptional medical care.  She will begin with providing gynecology services.

Malgorzata (Margaret) Mierzejewski was born and raised in Poland, where she graduated from Midwifery Medical School in 1987. She delivered more then 2000 babies during her 12 years experience at one of the hospitals in Krakow. She also was taking care of high-risk pregnancy patients in collaboration with physicians. Margaret then relocated to Long Island and graduated from a Baccalaureate Nursing Program at SUNY Stony Brook in 2006 and has been working at Huntington Hospital for over 12 years as an RN in cardiac care. She completed her Masters Degree at Stony Brook University and she also holds national board certification with the American Nurses Credentialing Center (ANCC) as a Family Nurse Practitioner. She graduated from both with honors. Margaret is an active member of American Association of Nurse Practitioners, Sigma Theta Tau International Honor Society and several other honor societies both American and International.

She is a traveler and beach lover. Her interests entitle yoga, bicycling, snow skiing, sailing, opera and theater. Tennis and golf are recent additions to her hobbies that were inspired by Margaret’s son who is a Varsity golfer. Margaret is also fluent in Polish and conversant in Russian.

Rosemary Thide, RNC, BSN

Rosemary Thide RNC received her associates degree from SUNY Farmingdale and her BSN from Chamberlain School of Nursing. She has been an RN since 1978. Rosemary has been with WGM since June of 1998. Prior to that she worked at Huntington Hospital, Syosset Hospital, and North Shore University Hospital in Gynecological Surgical Nursing, Operating Room, and Labor and Delivery. She holds national certification in obstetrical nursing and previously taught childbirth education classes.

Working along with Dr. Wagner and MaryBeth White NP, Rosemary handles phone calls; coordinates OB care; performs OB testing; gives injections; performs urodynamic testing; bone density testing; and many other functions within the office.

For your convenience, Rosemary is available for any questions and advice at 631-361-3322, ext. 5. She can be reached from 9:00 am to 5:00 p.m. Monday and Wednesday, and from 9:00 am to 3:00pm on Thursday, to assist with both obstetrical and gynecological questions.