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 (2)

The overall average patient rating of Dr. Mark Harrison is Excellent. Dr. Harrison has been reviewed by 2 patients who have provided 2 comments. The rating is 5 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 5.0
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 5.0

Specialties & Research

Dr. Mark Harrison, MD is board certified in Therapeutic Radiology.

  • He has special expertise in 2 areas:
  • Breast Cancer
  • Lymphoma

Education & Awards

Dr. Harrison graduated from University of Cincinnati.


Dr. Harrison has 7 hospital affiliations:

  • Valley Baptist Medical Center-Brownsville 
  • Valley Baptist Medical Center 


  • Spanish

> > > > Dr. Mark Harrison, MD

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Additional Information
Dr. Mark Leslie Harrison MD is a male Radiologist, has 29 years of experience and practices in Therapeutic Radiology.
Where does Dr. Mark L. Harrison practice?
Dr. Mark Harrison has 4 office locations.
Dr. Mark Harrison practices Therapeutic Radiology near Harlingen, TX.
Additional practice locations include: McAllen, TX and San Benito, TX.
See Harlingen Radiologists.