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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 (3)

The overall average patient rating of Dr. Ronald Underwood is Excellent. Dr. Underwood has been reviewed by 5 patients who have provided 3 comments. The rating is 3.5 out of 4 stars.

Patient Ratings
Ease of Appointment 3.8
Promptness 4.0
Courteous Staff 3.6
Accurate Diagnosis 3.4
Bedside Manner 3.4
Spends Time with Me 3.4
Follows Up After Visit 3.4

Specialties & Research

Dr. Ronald Underwood, MD is board certified in Internal Medicine and Cardiovascular Disease.

  • He has special expertise in 4 areas:
  • Acute Coronary Syndrome (ACS)
  • Heart Block
  • High Blood Pressure (Hypertension)
  • Unstable Angina

Education & Awards

Dr. Underwood graduated from The University of Texas Southwestern, Dallas.


Dr. Underwood has 9 hospital affiliations:

  • North Central Medical Center 
  • Texas Health Presbyterian Hospital Allen 


  • Spanish

> > > > Dr. Ronald Underwood, MD

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Additional Information
Dr. Ronald Howell Underwood MD is a male Internist, has 44 years of experience and practices in Internal Medicine and Cardiovascular Disease.
Where does Dr. Ronald H. Underwood practice?
Dr. Ronald Underwood has 3 office locations.
Dr. Ronald Underwood practices Internal Medicine and Cardiovascular Disease near Plano, TX.
Additional practice locations include: Dallas, TX.
See Plano Internists and Plano Cardiologists.