Companies catalogue
- Hall-Garcia Cardiology Associates, Houston
- Heart Clinic: Yong Steven Y MD, Houston
- Heinle Sheila K MD, Houston
- Honorable FG Villines III, Little Rock
- Honorable Lavenski R Smith, Little Rock
- Houston Cardiology Consultants, Houston
- Houston Cardiovascular Associates: A. George Basu MD, Houston
- Houston Methodist Cardiology Associates - Sugar Land, Houston
- Houston Methodist DeBakey Cardiology Associates, Houston
- HoustonMDs: Wilson James M MD, Houston