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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 (2)

The overall average patient rating of Dr. Ronald Olah is Excellent. Dr. Olah has been reviewed by 12 patients who have provided 2 comments. The rating is 4.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.5
Promptness 3.9
Courteous Staff 3.7
Accurate Diagnosis 3.9
Bedside Manner 3.7
Spends Time with Me 3.7
Follows Up After Visit 3.9

Specialties & Research

Dr. Ronald Olah, MD is board certified in Internal Medicine.

Education & Awards

Dr. Olah graduated from University of Southern California , Los Angeles. He has 2 awards.

Castle Connolly's Top Doctors™ (2012 - 2013)
Patients' Choice Award (2008 - 2009, 2014)


Dr. Olah has 8 hospital affiliations:

  • Huntington Hospital 
  • San Gabriel Valley Medical Center 


  • Spanish

> > > > Dr. Ronald Olah, MD

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Additional Information
Dr. Ronald Peter Olah MD is a male Internist, has 27 years of experience and practices in Internal Medicine.
Where does Dr. Ronald P. Olah practice?
Dr. Ronald Olah has 1 office location.
Dr. Ronald Olah practices Internal Medicine near Pasadena, CA.
See Pasadena Internists.