Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mary Ellen Gallagher, M.D.

Internal Medicine Physician in Arlington, VA · enumerated 2005.

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

National Provider Identifier

1417956814

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Registry record

Entity type Individual (Type 1)

Name Dr. Mary Ellen Gallagher

Credential M.D.

Sex Female

Practice address 2501 N Glebe Rd, Suite 301, Arlington, VA, 22207

Phone (703) 527-6664

Fax (703) 527-0655

Enumeration date Jul 18, 2005

Last updated in NPPES Apr 17, 2013

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 01235679 (VA) Primary

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License 0123579 (VA) Secondary

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
7668476	Other	VA	AETNA PPO
2230846	Other	VA	GREAT WEST
30-0212850	Other	VA	VIRGINIA HEALTH NETWORK
30-0212850	Other	VA	PHCS
30-0212850	Other	VA	UNITED HEALTHCARE
4130006	Other	VA	MAMSI/ALLIANCE INT.MED.
J828-0001	Other	VA	CAREFIRST BC/BS
J828-0001	Other	VA	FEDERAL EMPLOYEES BC/BS
2130006	Other	VA	MAMSI/ALLIANCE PEDIATRIC
138532	Other	VA	ANTHEM BC/BS
30-0212850	Other	VA	NCPPO
2230846	Other	VA	FIRST HEALTH
3555510	Other	VA	AETNA HMO
5539725	Other	VA	CCN

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 Mary Ellen Gallagher's NPI record?

Cross-check NPI 1417956814 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1417956814 active?

Yes, as of the latest NPPES snapshot, NPI 1417956814 is active (record last updated 2013-04-17).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-04-17.