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Dr. John Cassidy, MD

Dr. John Cassidy, MD

Age 60 Cardiology M
(8) 8 reviews
Accepting New Patients


Dr. John Cassidy, MD is a cardiology specialist in Tulsa, OK. Dr. Cassidy completed a residency at University Of Ky Hospital. He currently practices at Warren Clinic Cardiology of Tulsa and is affiliated with Saint Francis Hospital South. Dr. Cassidy is board certified in Cardiovascular Disease.


  • U Ky Med Ctr, Fellowship Hospital
  • University Of Ky Hospital, Residency Hospital
  • Marshall U Sch Med, Medical School — 1987

Insurance Accepted

  • Aetna
  • First Health (Coventry Health Care)

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  1. Warren Clinic Cardiology of Tulsa

    1. 1
      Warren Clinic Tulsa
      6151 S Yale Ave Ste 100a, Tulsa, OK 74136 Existing Patients: (918) 494-8500

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Dr. Cassidy saved my life and did his best to make sure I was on the proper meds for my individual health issues. I like to do a lot of stuff naturally, and he never frowned at me over that. He always supported my efforts in trying, and never made me feel intimidated or stupid. He is a very good doc who cares a lot for his patients and it shows.
R. La Viness — Jul 17, 2021
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Dr. John Cassidy, MD
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Frequently Asked Questions

Dr. Cassidy frequently treats Adult Congenital Heart Conditions and Interventional Cardiac Procedures.  

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Hospital Affiliations

  • Saint Francis Hospital South