Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

John Piper Grimm, MD

Individual provider Diagnostic Radiology Physician · NPI 1164606604

John Piper Grimm, MD practises Diagnostic Radiology in Charlotte, North Carolina. Graduated from University of Southern California Keck School of Medicine in 2003, 23 years ago. Practices with Charlotte Radiology PA, a 218-clinician group and accepts Medicare assignment. Licensed in California, North Carolina and South Carolina.

Years since qualifying
23
Trained at
University of Southern California Keck School of Medicine
Licensed in
CA, NC, SC
In the registry since
2007
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

700 E Morehead St Ste 300
Charlotte, NC 28202-2788
Phone: (704) 334-7800
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 2014-00743 (NC)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence A90306 (CA)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 37521 (SC)

Record details

NPI number1164606604
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 19, 2007
Last updated in NPPESDecember 20, 2017

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF SOUTHERN CALIFORNIA KECK SCHOOL OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice Charlotte Radiology Pa — 218 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations29 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients1,797
Services billed 2,328 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Charlotte Radiology PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 218 clinicians in the practice; 12 are shown here.

Other providers in Charlotte