Browse Health
Cardiologist (heart)
41 years of experience
Accepting new patients
License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (4)

The overall average patient rating of Dr. R Grantham is Poor. Dr. Grantham has been reviewed by 4 patients who have provided 4 comments. The rating is 1 out of 5 stars.

Patient Ratings
Ease of Appointment 3.0
Promptness 1.0
Courteous Staff 1.4
Accurate Diagnosis 2.3
Bedside Manner 1.0
Spends Time with Me 1.0
Follows Up After Visit 2.3

Specialties & Research

  • He has special expertise in 7 areas:
  • Acute Coronary Syndrome (ACS)
  • Carotid Artery Diseases (CAD)
  • Critical Care
  • Emphysema
  • Heart Block
  • High Blood Pressure (Hypertension)
  • Unstable Angina

Education & Awards

Dr. Grantham graduated from University of Oklahoma , Oklahoma City.


Dr. Grantham has 3 hospital affiliations:

  • Integris Southwest Medical Center 
  • Integris Bass Baptist Health Center 
  • Comanche Co Memorial Hospital 

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Additional Information
Dr. R Nathan Grantham MD is a male Internist, has 41 years of experience and practices in Cardiovascular Disease.
Where does Dr. R N. Grantham practice?
Dr. R Grantham has 2 office locations.
Dr. R Grantham practices Cardiovascular Disease near Oklahoma City, OK.
See Oklahoma City Cardiologists.