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

John Granville Alley Jr., MD

Individual provider Diagnostic Radiology Physician · NPI 1417973298

John Granville Alley Jr., MD practises Diagnostic Radiology in Raleigh, North Carolina. Graduated from University of North Carolina at Chapel Hill School of Medicine in 1998, 28 years ago. Practices with Centra Medical Group LLC, a 717-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in North Carolina and Virginia.

Years since qualifying
28
Trained at
University of North Carolina at Chapel Hill School of Medicine
Licensed in
NC, VA
In the registry since
2006
Specialties on file
2
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

3000 New Bern Ave
Raleigh, NC 27610
Phone: (919) 350-7000
Fax: (919) 375-8959
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1901 Tate Springs Rd, Lynchburg, VA 24501-1109 — (434) 300-6058

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 9901097 (NC)
Diagnostic Radiology Physician Taxonomy 2085R0202X · Licence 0101270438 (VA)

Record details

NPI number1417973298
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 14, 2006
Last updated in NPPESApril 27, 2023
Certification dateApril 27, 2023

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL SCHOOL OF MEDICINE
Graduated 1998 (28 years in practice)
Group practice Centra Medical Group Llc — 717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations15 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 patients2,130
Services billed 5,555 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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 Centra Medical Group LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 717 clinicians in the practice; 12 are shown here.

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