About Us

Women’s Medical Center (WMC) of May’s Landing offers an exemplary tradition of women’s care based on extensive medical experience coupled with advanced techniques and treatments that produce positive results. They are supported by a dedicated and knowledgeable staff in a fresh, new office setting.

The board-certified doctors of WMC, Ronald Portadin, MD and Jonathan Gewirtz, MD, originally of Vineland Obstetrical and Gynecological Professional Association (VOGPA), specialize in providing personalized care.

Ronald Portadin, MD, FACOG, FACS
Dr. Portadin is a member of the American College of Obstetricians and Gynecologists and the American College of Surgeons and specializes in major gynecological surgery and non-invasive gynecologic surgery, including laser surgery and cancer screenings.



Jonathan Gewirtz, MD, FACOG
Dr. Gewirtz is a member of the American College of Obstetricians and Gynecologists and the New Jersey Medical Society and focuses on Bio-Identical Hormone Replacement therapies and Integrative Medicine (Alternative Medicine) and in-office ablation. Dr. Gewirtz is the South Jersey coordinator of LUNAFEST, a film festival featuring works for and about women. Proceeds from the festival are donated to the Breast Cancer Fund.


Lynda Adamson-Stiles, RN, MSN, APN, C

Lynda has over 30 years of experience in healthcare for women and adolescents, contraceptive counselling, bio-identical hormone replacement and office procedures. Her passion for wellness lead her to becoming a Certified Health Coach who provides weight loss and wellness counseling.



Karen Duncan, APN 

Karen has over 20 years of experience in Ob/Gyn field and is nationally certified as an Advanced Practice Nurse. She holds a BS in Nursing from the Drexel University College of Medicine at Hahnemann University Hospital and an MS in Nursing from Rutgers University. She has been a Nurse Practitioner at Women’s Medical Center since 2008.