DR. JOHN T. HARRISON M.D.
NPI 1770525636
Internal Medicine in Baltimore, MD
About Dr. John T. Harrison M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN T. HARRISON M.D. (NPI 1770525636) is an individual internal medicine provider in Baltimore, Maryland, licensed in Maryland (D0044635) and active in the NPI registry since June 2006.
NPPES Registry Identity
Specialties & Licenses
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
BALTIMORE, MD 21207
BALTIMORE, MD 21207
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Harrison's NPI number?
The NPI number for John Harrison is 1770525636. It was assigned to this individual provider in the NPPES registry on June 12, 2006.
Where is John Harrison located?
John Harrison practices at 2200 Kernan Dr, Baltimore, MD 21207. The listed phone number is (410) 448-2500.
What is John Harrison's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
When was this NPI record last updated?
The NPPES record for John Harrison was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.