Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Grant Robert Zimmerman, MD, MS

Individual provider Student in an Organized Health Care Education/Training Program · NPI 1861923583

Dr. Grant Robert Zimmerman, MD, MS is an Internal Medicine in Columbus, Ohio. Graduated from Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University in 2017, 9 years ago. Practices with Central Ohio Hospitalists, Inc, a 194-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Ohio.

Years since qualifying
9
Trained at
Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University
Licensed in
OH
In the registry since
2017
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MS — Master of Science
A graduate science degree.

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Practice location Address checks out

3525 Olentangy River Rd Ste 4330
Columbus, OH 43214-3937
Phone: (614) 255-6900
Fax: (614) 255-6901
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 395 W 12th Ave, Columbus, OH 43210-1267 — (614) 293-3989

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 35.135428 (OH)
Student in an Organized Health Care Education/Training Program Taxonomy 390200000X

Record details

NPI number1861923583
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MS
Sole proprietorNo
NPI enumeratedMarch 23, 2017
Last updated in NPPESMay 7, 2020
Certification dateMay 7, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolCLVLND CLINIC LERNER COLLEGE OF MED OF CASE WSTN RSV UNIVERSITY
Graduated 2017 (9 years in practice)
Group practice Central Ohio Hospitalists, Inc — 194 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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