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49 years of experience
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).

Learn more about Dr. J Shaffer:

View the full profile to get information on:

  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (0)

The overall average patient rating of Dr. J Shaffer is Excellent. Dr. Shaffer has been reviewed by 1 patients who have provided 0 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. J Shaffer, MD is board certified in Internal Medicine.

  • He has special expertise in 2 areas:
  • Nutritional Support
  • Sports Medicine

Education & Awards

Dr. Shaffer graduated from University of Utah, Salt Lake City.


Dr. Shaffer has 5 hospital affiliations:

  • Sutter Memorial Hospital 
  • Sutter General Hospital 


  • English

> > > > Dr. J Shaffer, MD

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Additional Information
Dr. J Ronald Shaffer MD is a male Internist, has 49 years of experience and practices in Internal Medicine.
Where does Dr. J R. Shaffer practice?
Dr. J Shaffer has 1 office location.
Dr. J Shaffer practices Internal Medicine near Sacramento, CA.
See Sacramento Internists.