LBJ Medical Leadership

Chiefs of Staff

Tien Ko

Tien Ko, MD, FACS

Chief of Staff at LBJ General Hospital

Chief of Surgery

Phone: 713-566-4658
Email: [email protected]

Kunal Sharma, MD, CMQ

Vice Chief of Staff for Quality at LBJ General Hospital



Phone: 713-566-5058
Email: [email protected]


Mohammad Zare, MD, MS

Assistant Chief of Staff, Community Health Programs

Family & Community Medicine

Phone: 281-456-0728
Email: [email protected]


Peter Doyle, MD

Assistant Dean of Harris Health Programs

Chief of Anesthesiology & Medical Director

Phone:713-566-5971
Email: [email protected]

Chiefs of Service & Medical Directors



Scott Perry, MD
Chief of Service Anesthesia & Medical Director for the ASC


Collen Rodriguez, MD
Assistant Chief of Anesthesia


George W. Williams, II, MD, FASA, FCCM, FCCP
Co-Medical Director SICU


Adel D. Irani, MD, FACS
Chief of Service CV Surgery


Natasha Klimas, MD
Chief of Service Dermatology


Catherine Reynolds, MD
Chief of Service Emergency Medicine


Hashim Zaidi, MD, FAEMS
Medical Director for Harris Health EMS & Transfer Center


John Waller-Delarosa, MD
Assistant Medical Director of Emergency Medicine


Pedro J. Aquino, MD
Chief of Service Family Medicine


Michaela Onstad Grinsfelder, MD, MPH
Chief of Service GYN/Oncology


John R. Foringer, MD
Chief of Service Internal Medicine


Tarif Khair, MD, FACP, FACC, FASE
Chief of IM- Cardiology


Elenita Kanin, MD, PhD
Medical Director of IM- Cardiology Imaging


Absalon D. Gutierrez, MD
Medical Director of IM- Endocrine


Salem Muayad, MD
Medical Director of IM- Gastroenterology


Cristina Murdock, MD
Medical Director of IM- Geriatrics & Palliative Medicine


Emma Napoli, MD
Medical Director of IM- Infectious Disease


Ben J. Barnett, MD
Assistant Medical Director of IM- Infectious Disease


Ruckshanda Majid, MD, MBBS, DABSM, FCCP
Assistant Medical Director of IM- Critical Care


Jade Teakell, MD, PhD
Medical Director of IM- Nephrology


Gloria A. Salazar, MD, MS
Medical Director of IM- Rheumatology


Modupe Idowu, MD
Medical Director of IM- Hematology


Luis Ostrosky-Zeichner, MD
Chief of Service Infectious Diseases


Divya Bhamidipati, MD, MSc
Medical Director Clinics Infectious Disease


Shahroz K. Aziz, MD
Chief of Service Interventional Radiology


Sophia Tsakiri, MD
Medical Director of NICU


Shivika Chandra, MD
Chief of Service Neurology

Pamela D. Berens, MD
Chief of Service OB/GYN


Tejal A. Patel, MD
Chief of Service Oncology


Hillary Ma, MD
Medical Director for the MDAnderson Oncology Program at LBJ


Grace Lindhorst, MD
Chief of Service Ophthalmology

Gioconda Mojica, MD
Assistant Chief Ophthalmology


Issa Hanna, MD
Chief of Service Oral Maxillofacial Surgery


Wade P. McAlister, MD
Chief of Service Orthopedics


Ibrahim Alava, MD
Chief of Service Otolaryngology & Medical Director of OC


Antonio Galvao Neto, MD

Chief of Service Pathology


Hanadi El Achi, MD
Medical Director of Clinical Pathology


Jose Garcia, MD, SM
Chief of Service Pediatrics


Matthew Greives, MD, MS
Medical Director of Plastic Surgery


Erik Marques, MD, FACS
Assistant Medical Director of Plastic Surgery


Judy L. Thomas, MD
Chief of Service Physical Medicine and Rehabilitation


Rosa M. Estrada-Y-Martin, MD, MSc, CMQ, FCCP
Chief of Service Pulmonary and Critical Care Medicine/ Medical Director of MICU


Luis Fernandez, MD
Chief of Service Psychiatry


Joseph P. Hasapes, MD
Chief of Service Radiology


Rohan Samant, MD
Assistant Medical Director of Radiology


Tamara E. Saunders, MD, FACS
Assistant Chief of Surgery


Melissa K. Stewart, MD, FACS
Co-Medical Director of SICU


Rondel Albarado, MD
Medical Director of Trauma Surgery


Melina McCarty, MD
Chief of Service Urology