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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).

Learn more about Dr. Robert Zimmerman:

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  1. Qualifications
  2. What's important to you

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Patient Reviews

Patient comments (2)

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

Patient Ratings
Ease of Appointment 5.0
Promptness 4.3
Courteous Staff 5.0
Accurate Diagnosis 5.0
Bedside Manner 4.3
Spends Time with Me 4.3
Follows Up After Visit 4.0

Specialties & Research

Dr. Robert Zimmerman, MD is board certified in Internal Medicine and Nephrology.

  • He has special expertise in 1 area:
  • Kidney Disease

Education & Awards

Dr. Zimmerman graduated from Columbia University, New York.


Dr. Zimmerman has 8 hospital affiliations:

  • Maine Medical Center 
  • Mercy Hospital 

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Additional Information
Dr. Robert F Zimmerman MD is a male Internist, has 20 years of experience and practices in Internal Medicine and Nephrology.
Where does Dr. Robert F. Zimmerman practice?
Dr. Robert Zimmerman has 3 office locations.
Dr. Robert Zimmerman practices Internal Medicine and Nephrology near Portland, ME.
Additional practice locations include: Biddeford, ME.
See Portland Internists and Portland Nephrologists.