Mary Margaret O'Neill
Physician · OB-GYN
15+ years of experience
Menopause Society Certified Practitioner
About Cedar Ob/Gyn
Dr. O'Neill is a board-certified obstetrician and gynecologist who also holds the Menopause Society's NCMP certificate. Menopause is one of several services at her small practice, alongside general gynecology, fertility, obstetrics and acupuncture. This is a general ob-gyn office, not a menopause-only clinic, and she admits to two San Jose hospitals for surgery and deliveries. The office is in a historic house in Campbell, and new patients fill out a history questionnaire before the first visit. Appointments are booked through an online scheduling page. The site does not say which menopause treatments she prescribes.
Care
Treats
- Perimenopause
- Menopause
- Hot flashes
- Sleep problems
- Mood & anxiety
- Brain fog
- Vaginal dryness
- Low libido
- Irregular periods
Cost and insurance
Insurance
Private insurance — plans not listed, ask about yours
Medicare
Self-pay
Available — prices aren’t published, ask for rates
Verified October 2026. Coverage depends on your plan — confirm with your insurer before your visit.
Qualifications
MD, MPH, FACOG