Thomason Medical Clinic Specialists

Dr. Garrett Steinmetz

Orthopedic Surgeon

Residency: University of Oklahoma Health Sciences Center

Fellowship: Washington University School of Medicine – St. Louis, MO

Medical School: University of Oklahoma College of Medicine

Dr. Steinmetz’s practice includes both adult and pediatric patients. During his fellowship, he received advanced training in both the arthroscopic and open treatment of shoulder, knee, elbow and hip injuries. His goal is to provide exemplary orthopedic care for his fellow Oklahomans.


  • Orthopedics
  • Shoulder
  • Knee

Marcus Smith, M.D.

Interventional Cardiologist

Dr. Marcus Smith grew up in Oklahoma City, OK and joined CardioVascular Health Clinic in 2016. He earned his Doctorate of Medicine at the University of Oklahoma College of Medicine. He completed his residency in Internal Medicine at the University of Oklahoma Health Sciences Center where he served as Chief Resident. He remained at the University of Oklahoma to complete fellowships in General and Interventional Cardiology.

He specializes in the management and treatment of coronary artery disease (CAD), peripheral vascular disease (PVD), heart failure, and cardiac imaging. He is Board Certified in interventional cardiology.

Patients are drawn to his quick wit and personality. He is dedicated to helping his patients find non-invasive treatments and lifestyle modifications to live a better quality of life. Dr. Smith serves patients in Central and Western Oklahoma with complete cardiac care.

Brandon W. Pierson, M.D.


Dr. Pierson is an Oklahoma native, raised in Guthrie. He achieved a Bachelor of Science Degree in Zoology-Biomedical Sciences with Phi Beta Kappa honors at the University of Oklahoma. He then completed medical school and residency training in Otolaryngology at the University of Oklahoma. Dr. Pierson is currently a member of the American Academy of Otolaryngology–Head and Neck Surgery, Oklahoma Academy of Otolaryngology and the American Medical Association.

Dr. Pierson joined Oklahoma Otolaryngology Associates in 2015. In his free time, he enjoys spending time with his wife, Namali, and two children, Caroline and Alex. His interests include cycling, swimming and snow skiing.

We love our customers!

We take pride in fostering a genuine connection with our valued customers. Your well-being is our priority, and we are dedicated to providing exceptional care with a personal touch. Thank you for choosing us as your trusted partner.

Leave a Review
R CanL

R CanL

03:32 05/05/23

Dr Thomason and staff are friendly and knowledgeable about what they do and take care of the patients with the utmost respect.

Emily Bruce

Emily Bruce

15:48 12/21/22

Doctor Tomlinson in the wonderful doctor. He takes great care of his patients . Everyone at the office is very caring they do a wonderful... job too!read more

Milessa Sykes

Milessa Sykes

15:31 10/10/22

I've had nothing but great experience, Dr. Thomason is a great doctor not only has been a blessing for all medical problems but also... sending me on to what specialist I needed to see...Dr. Thomason staff is excellent kind. You can always call ask questions I'm sure there tired of me .but always kind words.from the time you come into the door till you get to the back, not often have I had to wait long but when your treated right you don't mind so more

Lissa Lee (No nickname)

Love Dr Thomason, love his staff.

Randi Allen

Randi Allen

14:50 09/06/22

The entire clinic is amazing. Wouldn't dream of taking my family anywhere else.

cyndi walton

cyndi walton

15:08 09/07/21

DR THOMASON!!! You truly saved my life!! At a time when no one would listen and I thought I was going crazy, you found what was wrong. I... thank God daily for the team of doctors he gave me.The entire staff is very professional and friendly. Never have any issues or problems. I have referred friends and more

mya crothers

mya crothers

12:45 04/01/19

Really like Dr. Trey. He talks to you about whatever is going on with you and it's personal. You don't feel like a number

Tamara Clift

Tamara Clift

20:57 08/28/18

Dr. Thomason and his staff are amazing. He is very attentive, explains things well, and you can tell he truly cares. I highly recommend... his more