Meet the Team at Austin Oaks Hospital

Our Physicians

Carlos Tirado, MD
Executive Medical Director

• Joined Austin Oaks Hospital in November 2019
• August 2006 – Fellowship in Addiction Psychiatry, University of Pennsylvania Center for Studies of Addition, Philadelphia, PA
• June 2003 – Residency in Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX
• June 1999 – MD, University of Texas Health Science Center, Houston, TX
• Board Certifications:
  • American Board of Psychiatry and Neurology, General Psychiatry, 2004
  • American Board of Psychiatry and Neurology, Addiction Psychiatry, 2014

Isela A. Werchan, MD

• Joined Austin Oaks Hospital in November 2019
• 2016 – Residency Psychiatry Program, University of Texas Austin / Dell Medical School Psychiatry
• 2012 – MD, University of Texas Medical Branch
• 2007 – BS in Microbiology, University of Texas El Paso

Jennifer Schaefer, MD

• Joined Austin Oaks Hospital in November 2019
• 2016 – Present – Fellowship in Child and Adolescent Psychiatry, University of Texas Austin / Dell Medical School
• 2016 – Residency Psychiatry Program, University of Texas Austin / Dell Medical School
• 2014 – MD, University of Texas Health Science Center of San Antonio
• 2008 – BS in Psychology, Texas A&M University

Kristen Starzynski
PMHNP-BC, Psychiatric Nurse Practitioner for Adult, and Adolescent Units

• Joined Austin Oaks Hospital in October 2018
• May 2017 – MSN, University of Texas, Austin, TX
• December 2006 – BA in Sociology, University of Texas, Austin, TX
• Board Certifications:
  • American Nurses Credentialing Center, Certified Psychiatric Nurse Practitioner, July 2017

Shiva Lam, MDService Director, Latency PHP

• Joined Austin Oaks Hospital in December 2016
• June 1998 – Residency in Child and Adolescent Psychiatry, Austin State Hospital, Austin, TX
• June 1998 – Residency in Psychiatry, Austin State Hospital, Austin, TX
• June 1986 – MD, Ghandi Medical College, Secunderabad, India
• Board Certifications:
  • American Board of Psychiatry and Neurology in Psychiatry, 2013

Our Leadership & Staff

• Colleen Lewis, Director of Human Resources
• Amy Cline, Director of Utilization Review
• Joseph Gutierrez, Director of Plant Operations