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Through active listening and thoughtful questioning I am able to deliver high quality care that utilizes the most recent advancements in medicine. I specialize and practice Obstetrics and Gynecology and having more experience, compassion, listening, and understanding sets me apart in this field. I graduated from Medical Academy of Warsaw, Poland in 1987 and received my MD. Then, I went through my Internship at King/Drew Medical Center as Chief Resident in Los Angeles in 1994. I have been Practicing in this field from 1994 till present.

Through active listening and thoughtful questioning I am able to deliver high quality care that utilizes the most recent advancements in medicine. I specialize and practice Obstetrics and Gynecology and having more experience, compassion, listening, and understanding sets me apart in this field. I graduated from Medical Academy of Warsaw, Poland in 1987 and received my MD. Then, I went through my Internship at King/Drew Medical Center as Chief Resident in Los Angeles in 1994. I have been Practicing in this field from 1994 till present.

Yvette Gentry, M.D. is board-certified in Obstetrics and Gynecology practicing at East Bay Women’s Health in Oakland and Alameda, California. Her interest lies in alternatives to hysterectomies, laparoscopic surgeries, and fibroid management while continuing to provide comprehensive prenatal care and supporting patients’ desires to have a minimal intervention natural birth experience. Her extensive experience with the da Vinci Robotic Surgical System allows her to perform less invasive surgeries leading to a quicker recovery. She also performs aesthetic services including BOTOX/Juvederm, laser hair removal for all skin types, and laser treatment of superficial veins, as well as cosmetic gynecological surgical procedures.

Dr. Gentry received her M.D. from the University of Washington in Seattle, is board certified and is an Assistant Clinical Professor at UCSF. She is one of only two doctors in California to be selected as one of "America's Favorite OB/Gyns" in Essence Magazine. She was selected a "Top Doctor" in Oakland Magazine. Dr. Gentry is a clinical investigator for NIH research trials conducted by the California Family Health Council, which focuses on new and innovative forms of contraception with the hopes of providing women all over the world with affordable and reliable options.

Dr. Timothy A. Leach, MD, FACOG, CNMP is an OB/GYN serving the East Bay and Walnut Creek, CA area. Dr. Leach helps patients at all stages of life, offering services like Pap Smear tests, birth control, STD testing, Nexplanon, Menopause medicine, MonaLisa Touch, C-section, and minimally invasive surgery for many female problems.

Dr. Leach earned his Bachelor of Science in Biology, as well as a Bachelor of Arts in Psychology at the University of California, Irvine. He then went on to graduate from medical school, also at the University of California, Irvine. After UCI, Dr. Leach completed an Obstetrics and Gynecology residency at UCSF-Fresno. With 18 years of experience, he has worked as the OB/GYN Department Chair at San Ramon Regional Medical Center and John Muir Walnut Creek.  Dr. Leach currently serves as the Medical Director of OB/GYN at John Muir Walnut Creek, where he is in charge of quality and safety for patient care. Dr. Leach is experienced with DaVinci Robotic Surgery and is the only certified provider by the North American Menopause Society in the East Bay. He is also a supervisor for the California Maternal Quality Care Collaborative, a statewide collaborative to reduce early elective delivery.  He practices exclusively at John Muir Health in both Walnut Creek and Concord, providing patients with unparalleled medical care.

Eric Tabas, MD Inc is an OB-GYN practice dedicated to personalized patient care, located in the Union Square neighborhood of San Francisco, California. Dr. Tabas provides a variety of services including annual well-woman visits, birth control, Nexplanon, obstetrics, endoscopic surgeries, menopause care including Hormone Replacement Therapy, LEEP procedures, abortion services including medical abortions, and Mona Lisa Touch vaginal rejuvenation.

Dr. Tabas earned his Bachelor of Science at the University of Vermont and completed his Medical Degree at Northwestern University. He is a fellow of the American College of Obstetrics and Gynecology and a member of the American Fertility Society, and the American Association of Gynecologic Laparoscopy.

Encouraging your questions and your greater understanding of your health leads to a better and more profound cooperative relationship. We value the trust you place in us. We strive to incorporate the full range of medical and surgical options available in your care. We care for our patients in a small boutique-like setting which over time builds a satisfying therapeutic relationship with our patients.  

New patients are currently being welcomed. When you call our office, Ms. Amber Hernandez or Ms. Lucene Thomason will help you make your appointment. When you come to our office they will also be welcoming you. Amber and Lucene were both born in San Francisco and consequently know the city well. Please have your insurance information with you when you arrive. You can also fax it to us in advance at 415-397-4225.

As a leading gynecologist serving patients in and around San Francisco, Dr. Katherine Gregory provides her patients with access to numerous services such as pap smear exams, treatment for fibroids, IUD placements, and numerous other necessary care options. San Francisco Gynecology can help women throughout the area receive the treatments required to maintain the best possible reproductive health.

Dr. Gregory has been practicing gynecology since 1995 and opened her gynecological practice in San Francisco in 2007. Dr. Gregory graduated from UC Berkeley with a Bachelor’s Degree in Physiology and proceeded to gain her Medical Degree from UC Davis. She completed her residency in Obstetrics and Gynecology at the Beth Israel Hospital, part of the Harvard Medical School in 1994. She also has a Master’s Degree in Public Health Quantitative Methods from the Harvard School of Public Health.

Currently, Dr. Gregory serves on numerous Quality Improvement Committees at the California Pacific Medical Center and she teaches at the University of California- San Francisco and Stanford. Dr. Gregory is known by her patients for her compassion and dedication to women’s health. She also speaks conversational Polish and Spanish.

The staff of San Francisco Gynecology and Dr. Gregory are committed to providing their patients with access to necessary and important women’s health procedures. Patients throughout San Francisco can receive the care and respect they deserve at the practice.

The practice welcomes new patients and accepts most major forms of medical insurance.

Since establishing his private practice in 1984, Ziyad Hannon, MD, FACOG, has built a reputation for cutting-edge OB/GYN health care. He welcomes patients to Lakeside Obstetrics, Gynecology & Fertility, at our state-of-the-art San Francisco location on 8th Avenue at Geary Boulevard.

A graduate of Lowell High School, San Francisco, Dr. Hannon earned a Bachelor of Arts degree in Biochemistry from the University of California, Berkeley, and a Bachelor of Science in Computer Science from the University of San Francisco. He then attended UCLA School of Medicine, Los Angeles, where he obtained his Doctor of Medicine degree. He spent the next four years in residency training at one of the largest maternity hospitals in the United States: Parkland Memorial Hospital, Dallas, Texas. There, he published his research paper on Ectopic Pregnancies.

His commitment to medical student education earned him the “2010 Outstanding Teacher Award” from the University of California San Francisco, School of Medicine. He continues his volunteer clinical teaching, as well as maintaining membership on active staff in the Department of Obstetrics & Gynecology at California Pacific Medical Center, San Francisco. He is also on active staff and serves as Chief of Gynecology at St. Mary’s Hospital and Medical Center, San Francisco.

Dr. Hannon has been serving the needs of families throughout the San Francisco Bay Area since 1984. He has expertise in the management of fertility issues, abdominal & pelvic surgery, including minimally invasive procedures. He has delivered multi-generational families and maintains a full schedule, providing personalized care to his patients.  

Outside work, Dr. Hannon enjoys swimming and creative writing, but most of all he enjoys wrestling with his grandchildren.

Committed to providing individualized care for patients and their families, Monica Hannon, MD, FACOG, is known for her compassion and caring bedside manner. Dr. Hannon welcomes patients to Lakeside Obstetrics, Gynecology & Fertility, at our 8th Avenue office location at Geary Boulevard in San Francisco.

She is a San Francisco native and a Lowell High School graduate. Dr. Monica Hannon earned her Bachelor of Arts from the University of Pennsylvania in Philadelphia. Over the next eight years in Washington D.C., Dr. Hannon completed her Doctor of Medicine and a competitive residency in Obstetrics and Gynecology at The George Washington University School of Medicine and Health Sciences and The George Washington University Medical Center. During this time, she was the recipient of multiple awards, including induction into the “Gold Humanism Honor Society” and selection by her colleagues as “OB/Gyn Resident of the Year.”

Board-certified through the American Board of Obstetrics and Gynecology and a fellow of the American College of Obstetricians and Gynecologists, Dr. Monica Hannon is committed to providing patient-centric, comprehensive women’s healthcare services. Dr. Hannon specializes in the management of contraception, fibroids, abnormal bleeding, pelvic pain, endometriosis, abnormal pap smears, and pelvic organ prolapse, to name a few. She enjoys educating patients about their health and developing collaborative treatment plans. Minimally invasive surgery, vaginal or laparoscopic, is the first choice when surgical treatment is warranted. With her extensive experience in managing routine as well as high-risk pregnancies, she provides personalized birthing experience for her patients and is committed to meeting the family planning needs of the diverse San Francisco Bay Area community.  

Dr. Monica Hannon is also a strong healthcare advocate within the LGBTQ community. She takes pride in offering respectful and individualized care for her LGBTQ patients – from assisting with conception for queer families to performing gender-affirming surgery for transgender patients.

When not in the office or on-call, Dr. Monica Hannon spends time with her wife and family. She is an active member in Our Family Coalition, a community-based queer family support and advocacy organization. When not at the zoo or the park, Dr. Monica Hannon enjoys snowboarding, rollerskating, swing dancing, and exploring new corners of the beautiful Bay Area.