Dr. Bonni S. Massa
Dr. Bonni Massa, MD, completed her undergraduate degree in Biology at UC San Diego. She later received her medical degree from Case Western Reserve University and completed her OBGYN residency at the University of Southern California. She was born and raised in Los Angeles and later relocated to San Francisco, where she has been in private practice since 2001. She is Board Certified in Obstetrics and Gynecology and enjoys all aspects of OBGYN with special interests in preconception counseling, low and high-risk pregnancies, contraceptive options, MonaLisa Touch, and minimally invasive surgery.
Dr. Massa is currently a member of the Obstetrical Collaborative Care Committee and was previously a member of the CPMC Perinatal Quality Committee. She enjoys the relationships she has been privileged to share with her patients and always strives to make her patients feel at ease and provide the best quality and personalized care possible.
Dr. Massa’s interests outside of medicine, include international travel, outdoor activities, and spending time with her husband, son and their dog, Mila.
Educational Background
Case Western Reserve University: School of Medicine, Cleveland, OH – Doctor of Medicine
University of California, San Diego – Degree: BS
Post Doctoral Training
Residency at University of Southern California – Los Angeles, CA
Board Certification & Licensure
American Board of Obstetrics and Gynecology (ABOG)
California Medical License
Hospital Affiliations
California Pacific Medical Center
Professional Memberships
San Francisco Medical Society (SFMS)
San Francisco GYN Society
California Medical Society
ACOG (American College of Obstetrics and Gynecology)
Dear Valued Patient Letter
October 4, 2024
Dear Valued Patient,
After careful consideration, I’ve made the difficult decision to leave my medical practice in San Francisco to pursue another opportunity that allows me to spend more time with my family. I’ll be transitioning to another practice based in Marin, in Petaluma, beginning November 1st, 2024. My last day in the office will be October 4, 2024. While this choice wasn’t easy, I’m confident it’s the right one for this stage in my life. It’s been an incredible privilege to care for you over the past 20+ years, and I’m deeply grateful for the relationships we’ve built.
I want to assure you that you will be in excellent hands with my physician partners, Drs. Huh, Yee, Grijalva, and Filler, whom I’ve worked alongside for over two decades and trust completely. They are exceptional doctors who will continue to provide you with the highest quality care.
Your medical records will remain securely in the practice. To ensure continuity of care, I recommend
scheduling any appointments after my last day with one of my colleagues. The office staff can assist you with any questions or concerns.
If you’d like to continue your care with me in Petaluma, I’ll be joining Prima Medical Group. The new building I’ll be working at is currently under construction and is scheduled to be completed by the end of the year. Until it’s ready, I’ll be working temporarily at either their Greenbrae or Novato office. You can call 415-461-7800 to schedule your appointment. Please confirm they accept your insurance prior to scheduling your appointment.
Please note that you will not need to transfer your medical records if you’re continuing care with me or any of my current partners as we are on the same electronic medical record.
Thank you for the trust you’ve placed in me as your physician. It’s been an honor to be part of your healthcare journey.
Warmest regards,
Bonni Massa, MD
