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Mark Alan Vierra

Mark Alan Vierra, MD

Specialties: General Surgery and Bariatric Surgery

Dr. Vierra is among the most experienced bariatric surgeons in the United States, having performed more than 3,350 procedures since 1991. He started the bariatric surgery program at Stanford University Medical Center and directed it for a decade before moving to Monterey to launch Community Hospital’s program. In addition to weight-loss surgery, Dr. Vierra does a broad range of gastrointestinal surgeries as a member of Monterey County Surgical Associates.

Learn more about our bariatric surgery program

Languages: Spanish


Medical School

Harvard Medical School


Stanford University School of Medicine


Stanford University School of Medicine

Board Certifications

  • General Surgery, American Board of Surgery, 1992


Most of the doctors who have medical staff privileges to practice medicine at Community Hospital of the Monterey Peninsula are independent physicians, not employees or agents of the hospital. These independent physicians bill separately for their services. If you have questions, please talk with your doctor.

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