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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. Jeffrey Gretz is Good. Dr. Gretz has been reviewed by 4 patients who have provided 3 comments. The rating is 4 out of 5 stars.

Patient Ratings
Ease of Appointment 5.0
Promptness 3.7
Courteous Staff 5.0
Accurate Diagnosis 4.6
Bedside Manner 5.0
Spends Time with Me 5.0
Follows Up After Visit 3.7

Specialties & Research

Dr. Jeffrey Gretz, DO is board certified in Internal Medicine.

  • He has special expertise in 2 areas:
  • Diabetes
  • Diabetes Complications

Education & Awards

Dr. Gretz graduated from Des Moines University.


Dr. Gretz has 8 hospital affiliations:

  • Alle-Kiski Medical Center 
  • Washington Hospital 

> > > > Dr. Jeffrey Gretz, DO

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Additional Information
Dr. Jeffrey R Gretz DO is a male Internist, has 18 years of experience and practices in Internal Medicine.
Where does Dr. Jeffrey R. Gretz practice?
Dr. Jeffrey Gretz has 2 office locations.
Dr. Jeffrey Gretz practices Internal Medicine near Canonsburg, PA.
See Canonsburg Internists.