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Department of Obstetrics and Gynecology

Alison Sumiko Breen, M.D. View profile as PDF

Alison Sumiko Breen

Alison Sumiko Breen welcomes LGBT patients.

Philosophy of Care

Dr. Breen believes the best part of being a physician is building relationships with her patients.  Every detail of a patient’s care, whether it's preparing for a new baby, preparing for surgery, diagnosing a health issue, or routine well-woman care is important. Helping to bring new babies into the world and seeing a patient through surgery is an essential part of the career she loves and is committed to providing the very best care.  She is pleased to work at UC Davis, where she attended medical school and residency training, working beside the doctors who inspired her to this career in the first place. 


Assistant Clinical Professor


Obstetrics and Gynecology


Obstetrics and Gynecology
UC Davis Medical Group, Elk Grove


UC Davis Medical Group, Elk Grove


UC Davis Medical Group - Elk Grove
8110 Laguna Blvd.
Elk Grove, CA 95758
Driving Directions
Phone: 916-683-3955

Lawrence J. Ellison Ambulatory Care Center
Obstetrics and Gynecology Clinic
4860 Y St., Suite 2500
Sacramento, CA 95817
Driving Directions
Phone: 916-734-6900

Additional Phone:

Physician Referrals: 800-4-UCDAVIS (800-482-3284)


M.D., UC Davis School of Medicine, Sacramento, CA, 2009
B.A., Wellesley College, Wellesley, MA, 2003


OB/Gyn, UC Davis Medical Center, Sacramento, CA, 2009-2013

Board Certifications:

American Cardiac Life Support,
Neonatal Resuscitation Program,

Professional Memberships:

American College of Obstetricians and Gynecology
American Medical Association
California Medical Association

Select Recent Publications:

Kargozaran H, Yuan SY, Breslin JW, Watson KD, Gaudreault N, Breen A, Wu MH. A role for endothelial-derived matrix metalloproteinase-2 in breast cancer cell transmigration across the endothelial-basement membrane barrier. Clin Exp Metastasis. 2007;24(7):495-502.

To see if Alison Sumiko Breen is accepting new patients, or for assistance finding a UC Davis doctor, please call 800-2-UCDAVIS (800-282-3284).