OUR PROVIDERS

BEMG has been staffing the Emergency Departments of Alta Bates for over 30 years and the Summit campus since 2004.

We are dedicated to providing the best care for our patients in their time of need. Many of our physicians and mid-level providers are on hospital committees to ensure that communication within all the hospital departments are fluid, and our departments provide the highest quality care and operate efficiently.

Leadership Team

Steve M. Sornsin, MD

Steve M. Sornsin, MD

Chief Executive Officer

Steve M. Sornsin, MD graduated from Ohio State University School of Medicine in 1983 and Denver General Hospital (now Denver Health System) Emergency Medicine Residency Program in 1987. He has been with BEMG since 1995.

Brian Potts, MD

Brian Potts, MD

Medical Director, Alta Bates Campus

Brian Potts, MD graduated from UC-Irvine School of Medicine in 2004 with a MD-MBA combined degree with Distinction in Service. He completed Emergency Medicine Residency at UC-Irvine Medical Center in 2007. He has been with BEMG since 2007.

Ronn Berrol, MD

Ronn Berrol, MD

Medical Director, Summit Campus

Ronn Berrol, MD graduated from the University of California Davis with a B.S. in Bio-Chemistry and did his Residency at UC Irvine Medical Center. He has been with BEMG since 1993.

Lisa Cheng, MD

Lisa Cheng, MD

Assistant Medical Director, Alta Bates Campus

Lisa Cheng, MD graduated from The Chicago Medical School in 2003 and completed Emergency Medicine Residency at Denver Health Medical in 2007. She has been with BEMG since 2007.

James Hirshberg, MD

James Hirshberg, MD

Chief Financial Officer

James Hirshberg, MD graduated from the University of Michigan Medical School in 2003 and completed his residency in Emergency Medicine at The Ohio State University in 2008. He has been with BEMG since 2008.

John Skovran, DO

John Skovran, DO

Assistant Medical Director, Summit Campus

John Skovran, DO went to college in Colby College, Waterville, ME and worked in Washington, DC as a science consultant for Booz Allen Hamilton. He attended medical school at Lake Erie College of Osteopathic Medicine, PA and completed his residency at Einstein Medical Center, PA. He has been with BEMG since 2015.

Our Providers

Ted Apstein, MD

Ted Apstein, MD graduated from the Alpert Medical School of Brown University in 2015. He completed his residency at the Maricopa Medical Center in Phoenix, AZ in 2018. He joined BEMG in 2018.

Aaron Barber, MD

Aaron Barber, MD

Aaron Barber, MD graduated from Iowa College of Medicine in 1994 and completed his residency in Emergency Medicine from New York University/Bellevue Medical Center in 1998. He has been with BEMG since 2011.

Stephanie Brown, MD, MPH

Stephanie Brown, MD, MPH

Stephanie Brown MD, MPH graduated from the University of Chicago Pritzker School of Medicine in 2009, and completed her Emergency Medicine residency at Los Angeles County/Harbor-UCLA Medical Center in 2012. She has been with BEMG since 2014.

Collin Bufano, DO

Collin Bufano, DO graduated from Touro College of Osteopathic Medicine in 2017. He completed his residency in Emergency Medicine in North Florida Regional Medical Center in 2020. He joined BEMG in 2020.

Karen Carothers, MD

Karen Carothers, MD

Karen Carothers, MD has worked for BEMG since finishing her residency in Emergency Medicine in 1993. She received her MD at Tufts Medical School in Boston, MA and completed her residency in emergency medicine at Highland General Hospital in Oakland, CA.

Austin Causey, MD

Austin Causey, MD graduated from Rush Medical College in 2016. He completed his residency in Emergency Medicine at the University of Illinois, Chicago in June 2019. He joined BEMG in 2020.

David Chen, MD

David Chen, MD

David Chen, MD graduated from Albert Einstein College of Medicine in 2006. He completed Emergency Medicine Residency at Jacobi-Montefiore in New York in 2010. He has worked with BEMG since 2011.

Jeff Chen, MD

Jeff Chen, MD

Summit Medical Staff President

Jeff Chen, MD graduated from UC Berkeley and then earned his MD/MPH degree at Tufts University. He completed residency at Yale New Haven Hospital and finished an Emergency Ultrasound fellowship at Highland/ACMC. He has been with BEMG since 2006.

Yenting Chen, MD

Yenting Chen, MD

Yenting Chen, MD graduated from University of California, Davis School of Medicine in 2004 and completed his Emergency Medicine Residency at Denver Health Medical Center in 2008. He has been with BEMG since 2008.

Steve Chin, MD

Steve Chin, MD

Steve Chin, MD obtained his Bachelor’s Degree at the University of California Berkeley and earned his MD at the University of California San Diego in 1995. He has been with BEMG since 2001.

Hyacinth De Guzman

Hyacinth De Guzman

Hyacinth De Guzman, graduated from Georgetown University in 2003 and completed Emergency Residency in 2007 at Lincoln Medical Center in New York. She has been with BEMG since 2008.

Shay Dehdashtian, MD

Shay Dehdashtian, MD

Shay Dehdashtian, MD went to Stanford for her undergraduate degree in Biological Sciences and graduated from University of Illinois with an M.D. Her passion for Emergency Medicine began soon after her rotation in medical school, and in 2011, she finished residency in Emergency Medicine from Beth Israel Medical Center in NYC. She has been with BEMG since 2013.

Christopher Dutra, MD

Christopher Dutra, MD

Christopher Dutra, MD graduated from UC Davis School of Medicine in 1979. He completed an Internal Medicine residency at Kaiser Medical Center in Oakland in 1983 and an Emergency Medicine residency at Highland General Hospital in Oakland. He has been with BEMG since 2003.

Dylan Easley, MD

Dylan Easley, MD

Dylan Easley MD graduated from Indiana University School of Medicine in 2003 and completed his residency in Emergency Medicine at New York Methodist Hospital/Weil Medical College of Cornell University in 2006. He has been with BEMG since 2006.

Alex Fox, MD

Alex Fox, MD

Alex Fox, MD went to UNC-Chapel Hill for undergrad and med school. Wanting to see another part of the country, he did his residency at Ohio State in Columbus. He has been with BEMG since 2015.

Arti Gehani, MD

Arti Gehani, MD

Arti Gehani, MD graduated from Drexel University College of Medicine in 2006 and completed her residency in Emergency Medicine at University of Southern California in 2010. She has been with BEMG since 2013.

Robert Golomb, MD

Robert Golomb, MD

Robert Golomb, MD graduated from Brown University in 1981, did General Surgery residency in New York City and Emergency Medicine residency at Highland Hospital in Oakland. He has been with BEMG since 1995.

Robert Gorski, MD

Robert Gorski, MD graduated from Michigan State University College of Human Medicine in May 2004 .He completed his residency in Emergency Medicine at the Presbyterian Brooklyn Methodist in May 2004. He joined BEMG in 2020.

Samantha Honner, MD

Samantha Honner, MD

Samantha Honner, MD graduated from residency in emergency medicine at Alameda County Medical Center in 2008, with the Andy Levitt Academic Resident of the Year award. She has been with BEMG since 2008.

Diana Huynh, MD

Diana Huynh, MD graduated from Stanford University in 2017. She completed her residency in Emergency Medicine at the Baylor College of Medicine, Ben Taub Hospital in Houston Texas. She joined BEMG in 2020.

Sarah Kelmenson-Chau, MD

Sarah Kelmenson-Chau, MD

Sarah Kelmenson-Chau, MD graduated from University of Pennsylvania School of Medicine in 2003 and completed her residency in Emergency Medicine from Brown University in 2007. She has been with BEMG since 2007.

Erwin Kong, MD

Erwin Kong, MD

Erwin Kong, MD graduated from the Duke University School of Medicine in 2017. He completed his residency in Emergency Medicine at the University of California Riverside in 2020. He joined BEMG in 2020.

Joshua Kravetz, DO

Joshua Kravetz, DO

Joshua Kravetz, DO graduated from Touro University College of Osteopathic Medicine in Vallejo, CA in 2006 and completed his residency in Emergency Medicine at Albert Einstein Medical Center in Philadelphia in 2010. He has been with BEMG since 2015.

Keala Landry, MD

Keala Landry, MD

Keala Landry, MD attended New York Medical College and did her residency at Yale New Haven Hospital. She has been with BEMG since 2008.

Benjamin Lerman, MD

Benjamin Lerman, MD

Benjamin Lerman, MD graduated from University of Michigan, College of Medicine in 1985 and completed his residency in Emergency Medicine at University of Cincinnati Medical Center in 1989. He has been with BEMG since 1991.

Jessica Li, MD

Jessica Li, MD

Jessica Li, MD went to Stanford for college and Johns Hopkins for med school and completed residency last year at Highland. She has been with BEMG since 2016.

Claire Lyons, MD

Claire Lyons, MD

Claire Lyons, MD graduated from University of San Francisco in June 2014. She completed her residency at the Highland Emergency Medicine Residency program in June 2014. She joined BEMG in 2018.

Mordechai Pavlovsky, MD

Mordechai Pavlovsky, MD

Mordechai Pavlovsky, MD graduated from his Emergency Medicine Residency at Einstein Medical Center in Philadelphia, PA. He completed medical school at SUNY Downstate Medical Center in Brooklyn, NY, in 2009. He has been with BEMG since 2014.

Tim Richardson, MD

Tim Richardson, MD

Tim Richardson, MD graduated from Tulane University school of Medicine in 2015. He completed his residency in Emergency Medicine at the Cook County Health and Hospital System in 2019. He joined BEMG in 2019.

Jillian Rosenblum, MD

Jillian Rosenblum, MD

Jillian Rosenblum, MD graduated from University of Arizona, Tucson, AZ. She completed her residency in Emergency Medicine at the Cook County Health and Hospital system, Chicago, IL in 2015. She joined BEMG in 2019.

Michael Roth, MD

Michael Roth, MD

Michael Roth, MD graduated from Wayne State University School of Medicine in 2017. He completed his residency in Emergency medicine at the Ascension St. John Hospital and Medical Center in June 2020. He joined BEMG in 2020.

Douglas Spurr, MD

Douglas Spurr, MD

Douglas Spurr, MD graduated from Albert Einstein Medical School in 1991. He completed his Internal Medicine internship in 1992 and Emergency Medicine residency in 1995 at Bronx Municipal Hospital Center. He has been with BEMG since 2008.

James Starr, MD

James Starr, MD

James Starr, MD graduated from University of Wisconsin Medical School in 1998 and completed his residency in Emergency Medicine from St. Luke’s/Roosevelt Hospital Center, NY in 2001. He has been with BEMG since 2005.

Emily Sze, MD

Emily Sze, MD

Emily Sze, MD graduated from the University of Maryland, College Park in 2010 and the University of Maryland School of Medicine in 2015. She completed her residency in Emergency Medicine at the Hackensack University Medical Center in New Jersey. She joined BEMG in 2018.

Melissa Tang, MD

Melissa Tang, MD

Melissa Tang, MD went to college at Cornell University and med school at Rutgers-New Jersey Medical School. She completed her residency at Drexel/Hahnemann University Hospital. She has been with BEMG since 2015.

Grace Tarng, MD

Grace Tarng, MD

Grace Tarng, MD trained at Texas Tech University and completed her residency in El Paso, Texas. She has been with BEMG since 2015.

Adrian Thomas, MD/MS

Adrian Thomas, MD/MS

Adrian Thomas, MD/MS, graduated from the UC Berkeley-UCSF Joint Medical Program in 2016. He completed his residency in Emergency Medicine at the Riverside Community Hospital / University of California Riverside program in 2020. He joined BEMG in 2020.

David Toor, MD

David Toor, MD

David Toor, MD graduated from Virginia Commonwealth University School of Medicine in 2008 and completed his residency in Emergency Medicine at UCSF Fresno, Medical Education Program. He has been with BEMG since 2012.

Sean Wilkie, MD

Sean Wilkie, MD

Sean Wilkie, MD graduated from Kerk school of Medicine at the University of Southern California in Los Angeles in 2010. He completed his residency at the Kern Medical Center department of Emergency Medicine in 2014. He joined BEMG in 2019.

Marcus Williams, MD

Marcus Williams, MD

Marcus Williams, MD graduated from University of California, Irvine, School of Medicine in 2012.He completed his residency in Emergency Medicine at the Alameda County Medical Center in 2016. He joined BEMG in 2020.

Christopher Wu, MD

Christopher Wu, MD graduated from the University of California with a Bachelor of Arts in Public health in 2010. He went on to graduate from the University of Arizona in Medicine followed by completion of residency in Emergency Medicine in 2016.

Ami Yamamoto, MD

Ami Yamamoto, MD

Ami Yamamoto, MD obtained a Bachelor of Science degree in Materials Science and Engineering at Massachusetts Institute of Technology, and her medical degree at Drexel University College of Medicine. She completed  her Emergency Medicine residency at Harbor UCLA Medical Center. She has been with BEMG since 2015.

Brain Yokers, MD

Brian Yokers, MD

Brian Yokers, MD graduated from Touro University College of Osteophatic Medicine in 2010. He completed his residency at St Joseph’s Regional medical center in Paterson NJ. He joined BEMG in 2018.

For over thirty years we’ve committed to serving the health needs of our community.

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