Gastroenterologist (digestive)
24 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 (6)

The overall average patient rating of Dr. Martha Hierro is Average. Dr. Hierro has been reviewed by 12 patients who have provided 6 comments. The rating is 2.5 out of 5 stars.

Patient Ratings
Ease of Appointment 2.3
Promptness 2.1
Courteous Staff 2.3
Accurate Diagnosis 2.8
Bedside Manner 3.0
Spends Time with Me 3.1
Follows Up After Visit 2.3

Specialties & Research

  • She has special expertise in 5 areas:
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Ulcerative Colitis

Education & Awards

Dr. Hierro graduated from University of California at Los Angeles.


Dr. Hierro has 8 hospital affiliations:

  • UCLA Medical Center 
  • Providence Holy Cross Medical Center 


  • Spanish
  • French

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Additional Information
Dr. Martha Elva Hierro MD is a female Internist, has 24 years of experience and practices in Gastroenterology.
Where does Dr. Martha E. Hierro practice?
Dr. Martha Hierro has 2 office locations.
Dr. Martha Hierro practices Gastroenterology near Santa Monica, CA.
Additional practice locations include: Los Angeles, CA.
See Santa Monica Gastroenterologists.