Leadership & Staff

Michael Thomas

Michael Thomas

Chief Executive Officer

Michael brings more than 12 years of healthcare management expertise to HealthSouth RIOSA. He has held various leadership positions throughout his career in areas including outpatient and inpatient rehabilitation, home health and hospice as well as acute care. Michael holds a bachelor’s degree from the University of Tennessee Health Science Center, a master's degree in business administration through Aspen University and a doctorate degree from the University of St. Augustine Health Science Center.

Chaula J. Rana, M.D.

Chaula J. Rana, M.D.

Medical Director

Dr. Chaula Rana is a graduate of the University of Texas at Austin. She received her medical degree at the Baylor College of Medicine in Houston, Texas, in 1985. She also completed her residency in physical medicine and rehabilitation in Houston, doing most of her work at The Institute for Rehabilitation and Research (TIRR Memorial Hermann). She is board-certified in PM&R. Dr. Rana serves as medical director at HealthSouth RIOSA and also has a private outpatient practice in San Antonio.

* The hospital provides access to independent physicians.

Gerri Hyer

Gerri Hyer, RPh, MS

Director of Pharmacy

Gerri Hyer has more than 20 years' experience in pharmacy. Her experience includes both clinical and management roles. While the bulk of Gerri’s experience has been in hospital settings, she has also served as director of pharmacy for a home infusion pharmacy and a long-term care institutional pharmacy. She has worked as a clinical pharmacist in a large, tertiary care teaching hospital and she has served as director of pharmacy and clinical pharmacist for several small community hospitals. Gerri’s education includes a bachelor’s degree in pharmacy, a master’s degree in pharmacy administration and a clinical doctorate degree in pharmacy (PharmD).

Greg Iverson

Gregg A. Iverson, M.S. CCC-SLP

Director of Therapy Operations

Gregg Iverson has worked at HealthSouth RIOSA since 1991. He has served as a staff speech-language pathologist and a therapy team leader. He is a graduate of Southwest Texas State University with a bachelor’s and master’s degree in communication disorders. His experience includes acute rehabilitation, home health, acute care, outpatient and long-term care.

Kasondra Kistner

Kasondra Kistner

Chief Nursing Officer

Kasondra Kistner, chief nursing officer, has 17 years of nursing and leadership experience. She holds a Bachelor of Science in nursing, from the University of Mississippi as well as a master’s degree in health administration from Webster University. She values excellence in patient care and is passionate about positive outcomes in rehabilitation.

Jahnavi Manocha

Jahnavi Manocha, MD

Program Medical Director

Dr. Jahnavi Manocha graduated medical school in 1999 from the Finch University of Health Sciences/Chicago Medical School and completed her physical medicine and rehabilitation residency in San Antonio at The University of Texas Health Science Center at San Antonio in 2003. Dr. Manocha has a special interest in amputations and currently serves as the Amputee Program Medical Director at HealthSouth Rehabilitation Institute of San Antonio. Dr. Manocha enjoys yoga and spending time with her family.

Sarah Pena

Sarah Peña, RN, BSN

PPS Coordinator

Sarah Peña received a bachelor's degree in nursing from The University of the Incarnate Word in 2012. She joined HealthSouth RIOSA immediately following graduation. Sarah has both clinical and management experience. She works closely with all departments to ensure quality patient outcomes.

Lucinda Sosa

Lucinda Sosa, RN, BSN

Director of Quality and Risk Management

Lucinda Sosa has more than 20 years of experience as a registered nurse. She is a graduate of the University of Texas Health Science Center at San Antonio and has held various management positions throughout her career. Lucinda joined the HealthSouth RIOSA team in September 2008. Prior to joining RIOSA, she was a home health administrator and nursing director.

Larry Spriggs

Larry Spriggs, MBA, CPA

Chief Financial Officer

Larry Spriggs serves as chief financial officer and has more than 22 years of progressive healthcare financial management experience, including acute care, behavioral health and inpatient rehabilitation. Throughout his career, Larry has assisted in opening three hospitals, functioned as an internal auditor and has held area and regional CFO positions. A certified public accountant, Larry joined HealthSouth RIOSA in December 1994. He received a bachelor’s degree in finance and accounting and a master’s degree in business administration.

Susanna Stuart

Susanna Stuart RN, BSN

Director of Case Management

Susanna Stuart joined the HealthSouth RIOSA team in 2015 with 22 years of experience in the healthcare field. She served eight years active duty and an additional four years in the reserves in healthcare for the U.S. Air Force before getting her bachelor’s degree in nursing at the University of Texas Health Science Center at San Antonio. She acquired four years of experience as a spinal cord injury rehabilitation nurse at Audie Murphy VA hospital prior to becoming a case manager.

Vanessa Tejada

Vanessa Tejada, PHR

Director of Human Resources

Vanessa Tejada has worked in human resources as either a manager or director for over 15 years. She received a bachelor’s degree in history/political science from St. Mary’s University. Vanessa has been PHR certified by the Society for Human Resource Management since 2002. She has been with HealthSouth Rehabilitation Institute of San Antonio since December 2005. Prior to joining RIOSA, she served as director of human resources for Souper Salad, Inc.