Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen W Rex, MD

Family Medicine Physician in Alexandria, VA · enumerated 2005.

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

National Provider Identifier

1861495871

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Registry record

Entity type Individual (Type 1)

Name Stephen W Rex

Credential MD

Sex Male

Practice address 8101 Hinson Farm Rd, Ste 415, Alexandria, VA, 22306

Phone (703) 799-9695

Fax (703) 310-4314

Enumeration date May 23, 2005

Last updated in NPPES Oct 12, 2015

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 0101051876 (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
289060	Other	VA	MDIPA OP CHOICE MAMSI
81660002	Other	VA	CAREFIRST BCBS
CJ2302	Other	-	MEDICARE RAILROAD
080174443	Other	VA	RAILROAD MEDICARE
286376	Other	VA	ANTHEM BCBS
505645	Other	VA	NCPPO

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

Is NPI 1861495871 active?

Yes, as of the latest NPPES snapshot, NPI 1861495871 is active (record last updated 2015-10-12).

How do I verify Stephen Rex's NPI record?

Cross-check NPI 1861495871 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2015-10-12.