Manisha Abeysinghe, MD, is a board-certified obstetrician and gynecologist with an additional board certification in anti-aging and regenerative medicine. She cares for patients at Advanced Obstetrics & Gynecology, LLC, with locations in Lebanon, Branchburg, and two offices in Flemington, New Jersey. Dr. Abeysinghe has extensive experience in women’s health, with special expertise in minimally invasive surgery, general obstetrics, and health and wellness optimization.
Dr. Abeysinghe earned her undergraduate degree from Ohio University in Athens, Ohio, and her medical degree from The Ohio State University College of Medicine in Columbus, Ohio. She went on to complete her residency in obstetrics and gynecology at Riverside Methodist Hospital in Columbus. After residency, she lived in Singapore, where she worked as a medical advisor and flight doctor for International SOS, the world’s largest medical assistance company. During her time there, she also studied Ayurveda and other Eastern medicine techniques.
Throughout her career, Dr. Abeysinghe has been honored with numerous awards, including Healthy Living’s New Jersey Top Doctor, multiple Patient Choice Awards, an Outstanding Laparoscopic Surgery Award, and recognition as one of the most compassionate doctors in her field. She is an active member of the Society of Laparoendoscopic Surgeons, the American Association of Gynecologic Laparoscopists, the American Board of Anti-Aging and Regenerative Medicine, and the Asia-Pacific Association of Gynecologic Endoscopy. Additionally, she is a Reiki I and Reiki II master and holds an Ayurvedic degree from the Institute of Ayurvedic and Integrative Medicine.
Dr. Abeysinghe has been named a Castle Connolly Top Doctor in New Jersey for several years, including 2025. Outside the office, she enjoys traveling with her husband and two children, as well as cooking, reading, and dancing.
Your health matters. Your voice matters. And your story matters.
At Advanced Obstetrics & Gynecology, we’re here to support you every step of the way — with compassion, expertise, and care that feels personal. Whether you’re scheduling your first visit or returning for ongoing care, we’re honored to be your partners in health.
Call us today or request an appointment online. We can’t wait to meet you.
Real words from real women — honest stories of care, comfort, and confidence. We’re proud to be part of their journey.

★★★★★
"I had a wonderful experience with this practice. I moved and had to switch practices at 30 weeks pregnant and they were so on top of scheduling, took the time to understand my medical history, and treated my high risk pregnancy seriously despite my late ...

★★★★★
"I have nothing but wonderful things to say about this office. The receptionists are so kind, extremely helpful. I love my Dr, I feel as though she really listens to what I have to say and has helped me through a tough journey. There have been several instances ...

★★★★★
"Dr Rubin is hands down the best doctor I have ever had. He truly has listened to me, always takes his time to address all questions and concerns. Never makes you feel silly for asking any question and he makes sure you feel heard....

★★★★★
"I cannot say enough good things about this practice; especially about Dr. Abeysinghe. She is amazing. I work in healthcare. It is not easy to impress me. I would never know this was a large practice. The office staff calls with results, returns calls, always ...