Our Physicians

Old Pueblo Anesthesiology is a fully staffed physician-only group.  Our physicians have completed four or more years of college followed by four years of medical school, one year of internship in Internal Medicine, Transitional or Surgery, and at least three years of training in an accredited anesthesiology residency.  Many of our doctors have an additional year or two of fellowship training in subspecialties such as pediatric anesthesiology, cardiac anesthesiology, pain management and intensive care medicine.  Old Pueblo Anesthesia physicians are board certified or board eligible by the American Board of Anesthesiology. Some are additionally board certified in other areas of medicine such as Internal Medicine and Surgery.

To learn more about our physicians click on the name below:


Matthew Atlas, MD Hill Johnson, MD
Michael Bracht, MD Robin Kloth, MD
Cristian Bratu, MD Michael Lopez, MD
Brian Cammarata, MD Neesann Marietta, MD
Pong Chanvitayapongs, MD Mark McClain, MD
Songsiri Chanvitayapongs, MD John Morrison, MD
Lance Clyde, MD Sang O, DO
Hannah Dillon, MD Matt Offerdahl, MD
Luis Esparza, MD Kim Rafacz, MD
Jorge Favela, MD Dave Rogers, MD
Gary Flacke, MD Jose Samson, MD
Greg Franklin, DO Jim Slattery, MD
Christopher Glynn, MD Josh Smith, MD
Allison Greening, MD Shawn Tolbert, MD
John Hettiarachchy, MD Paul Tsong, MD
Robert Horvath, MD Jorge Uribe, MD Ph.D.
Dan Hughes, MD Travis Warner, MD
Doug Jacobsen, MD Al Zehngut, MD
Adam Johnson, MD