Cheyenne Cardiology Associates is a group of experienced, caring, and compassionate cardiologists providing comprehensive services in Southeastern Wyoming, Northern Colorado, and Western Nebraska.

Cheyenne Cardiology Associates is comprised of local, well known physicians including M. Obadah Al Chekakie, MD, Wallacy Garcia, MD, Sonja Hanson, PA-C, Shayibu Harruna, MD and Muhammad Khan, MD, along with Advanced Clinical Practitioners Amanda Diefenderfer, PA-C, Maria Kidner, DNP, and Ann Anderson, FNP-C.

Combining extensive experience with compassionate care, the physicians of Cheyenne Cardiology Associates provide a wide range of services and are accepting new patients.


Reasons to Choose Cheyenne Cardiology Associates


Cheyenne Cardiology Associates offers patients a full range of services, from prevention to testing, treatment and follow-up. With an expert team of cardiologists, Cheyenne Cardiology Associates provides experienced and compassionate care for all phases of heart-related conditions.

Easy Access

Cheyenne Cardiology Associates is conveniently located in the Medical Office Building right next to Cheyenne Regional Medical Center in the heart of downtown Cheyenne at 2301 House Avenue, Suite 301.


Heart disease prevention and education are a priority for the physicians and staff at Cheyenne Cardiology Associates. Community awareness events and programs that will strengthen our community’s knowledge about heart disease, while offering strategies to prevent it, are very important to us. We offer individualized screenings, education, and preventive treatments, all designed to keep you and your heart as healthy as possible.

Full Spectrum of Cardiovascular Services

We have a comprehensive Cardiology Program with very experienced providers. We offer a full range of services:

  • Coronary Angiography
  • Stenting
  • Peripheral Diagnostics and Interventions
  • Congestive Heart Failure
  • Catheter Ablation
  • Device Based Therapies
  • Anti-Coagulation Clinic