Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Samuel Mark Shor, M.D.

Internal Medicine Physician in Reston, VA · enumerated 2005.

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

National Provider Identifier

1184611964

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Registry record

Entity type Individual (Type 1)

Name Samuel Mark Shor

Credential M.D.

Sex Male

Practice address Reston, VA, 20190

Phone (703) 709-1119

Fax (703) 709-7496

Enumeration date Oct 5, 2005

Last updated in NPPES Jan 5, 2012

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 101036333 (VA) 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
504468	Other	VA	NCPPO PROVIDER NUMBER
745990	Other	VA	CIGNA PROVIDER NUMBER

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 Samuel Shor's NPI record?

Cross-check NPI 1184611964 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1184611964 active?

Yes, as of the latest NPPES snapshot, NPI 1184611964 is active (record last updated 2012-01-05).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-01-05.