William J. Bommer, M.D. for UC Davis Health

William J. Bommer, M.D.

Statewide Chairman, UC Berkeley Right Care Initiative

California Specialty Delegate: American College of Cardiology and California Medical Association

Chairman, California Master Plan Steering Committee

Director, California Elective PCI Program

Director, UCD High Cardiovascular Risk Prevention Program

Professor of Clinical Internal Medicine

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




Cardiovascular Medicine

Internal Medicine


Internal Medicine

Locations and Contact

Lawrence J. Ellison Ambulatory Care Center

Cardiology Clinic
4860 Y St.
Sacramento, CA 95817

Get Directions

Additional Numbers

Physician Referrals

800-4-UCDAVIS (800-482-3284)

Clinical Interests

William J. Bommer's clinical research interests focus on sonography (thoracic, trans-esophageal, intra-luminal, and intra-vascular echocardiography) and patient care. Research Projects involve computer simulation of blood-flow models, color-flow imaging, finite difference analysis, new echo-contrast agents, and new cardiovascular medicines and interventions.

As the Director of the UCDavis High Risk Prevention Program and the California elective PCI Program, and Statewide Chairman of the UC Berkeley Right Care Initiative and the California Master Plan Steering Committee, his clinical efforts are focused on the prevention and treatment of Cardiovascular Disease.


Cardiovascular Medicine

Center/Program Affiliation

Cardiovascular Services

Undergraduate School

B.A., Cornell University, Ithaca NY 1968

Medical School

M.D., State University of New York School of Medicine, Buffalo NY 1972


Internal Medicine, State University of New York, Buffalo NY 1972-1973


Internal Medicine, State University of New York, Buffalo NY 1973-1975


Cardiovascular, Joint Clinical Cardiovascular Training Program, Martinez VA Hospital and UC Davis School of Medicine, Martinez CA 1975-1977

Best Doctors List of Outstanding Clinical Physicians in Sacramento Magazine, 2011, 2012, 2013, 2014, 2015, 2016, 2017

Best Doctors in Sacramento 2011, 2012, 2013, 2014, 2015

Best Doctors in America 2009, 2010, 2011, 2012, 2013, 2014, 2015

Top Cardiologist, International Association of Cardiologists, 2013

Honorary Lifetime Fellow British Cardiovascular Society, 2012

Bommer WJ, Ram S, Li Z, Patel T, Mahendra G, Vazquez L, Southard J. The 4-year percutaneous coronary intervention California audit monitored pilot with offsite surgery (PCI-CAMPOS) outcomes in 205,052 patients in hospitals Publications Page 28 of 36 with and without onsite cardiac surgery. J Am Coll Cardiol. 2015 Mar;65(10S):A1687.

Dunkler D, Dehghan M, Teo KK, Heinze G, Gao P, Kohl M, Clase CM, Mann JF, Yusuf S, Oberbauer R; ONTARGET Investigators. Diet and kidney disease in high-risk individuals with type 2 diabetes mellitus. JAMA Intern Med. 2013 Oct 14;173(18):1682-92. doi:10.1001/jamainternmed.2013.9051. PMID:23939297.

Mauri L, E Foster, DD Glower, P Apruzzese, Massaro JM, Herrmann HC, Hermiller J, Gray W, Wang A, Pedersen WR, Bajwa T, Lasala J, Low R, Grayburn P, Feldman T for the EVEREST II Investigators (Including WJ Bommer). 4-year results of a randomized controlled trial of percutaneous repair versus surgery for mitral regurgitation. J Am Coll Cardiol. 2013 Jul;62(4):317-328.

Bommer WJ. California cardiovascular legislation 2014. Rev Cardiovasc Med. 2014;15(3):266-70.

Bommer WJ. Coronary revascularization: then, now, future trends. Rev Cardiovasc Med. 2014;15(2):176-7. doi:10.3909/ricm15-2CAACC. PMID:25051135.

Smith TW, Bommer WJ. Multimodality imaging in transcatheter aortic valve replacement. Rev Cardiovasc Med. 2014;15(2):75-85. doi:10.3909/ricm0701. PMID:25051125.

Bommer WJ. Choosing wisely. Rev Cardiovasc Med. 2013;14(2-4):e134-5. doi:10.3909/ricm14023CAACC. PMID:24448254.

Bommer WJ. Health care reform: what's wrong with 17.6% GDP? Rev Cardiovasc Med. 2013;14(1):66-8. doi:10.3909/ricm0684. PMID:23651988.

Bommer WJ. California ACC goals. Rev Cardiovasc Med. 2012;13(2-3):e121-3. doi:10.3909/ricm0662. PMID:23160160.

Bommer WJ. Current and future alternatives to warfarin for the prevention of stroke in atrial fibrillation. Crit Pathw Cardiol. 2012 Jun;11(2):45-54. doi:10.1097/HPC.0b013e31824d705a. PMID:22595814.