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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- Currently 3.5 of 4 stars
The overall average patient rating of Dr. Robert Zimmerman is Excellent.
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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:
- Mercy Hospital
- Southern Maine Medical Center