Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stewart B Karr, MD

Diagnostic Radiology Physician in Silver Spring, MD · enumerated 2006.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1477567022

Verified

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Registry record

Entity type Individual (Type 1)

Name Stewart B Karr

Credential MD

Sex Male

Practice address 2121 Medical Park Drive, Suite 3, Silver Spring, MD, 20902

Phone (501) 681-3003

Fax (301) 681-5868

Enumeration date Jul 28, 2006

Last updated in NPPES May 7, 2008

Taxonomy & licenses

2085R0202X Diagnostic Radiology Physician Allopathic & Osteopathic Physicians · License D0035868 (MD) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
80430026	Other	DC	BLUE SHIELD
60234801	Other	MD	BLUE SHIELD
152651100	Medicaid	MD	-

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

How do I verify Stewart Karr's NPI record?

Cross-check NPI 1477567022 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1477567022 active?

Yes, as of the latest NPPES snapshot, NPI 1477567022 is active (record last updated 2008-05-07).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-05-07.