Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Thomas Archibald Feely, MD

Internal Medicine Physician in Leesburg, VA · enumerated 2008.

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

National Provider Identifier

1477722890

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Registry record

Entity type Individual (Type 1)

Name Dr. Thomas Archibald Feely

Credential MD

Sex Male

Practice address 19450 Deerfield Avenue, Suite 300, Leesburg, VA, 20176

Phone (703) 858-3220

Fax (703) 858-3221

Enumeration date Feb 29, 2008

Last updated in NPPES Oct 2, 2023

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 0101260436 (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
1477722890	Medicaid	VA	-
30016120360001	Medicaid	VA	-

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.

Read the full guide → Validate an NPI →

Frequently asked questions

What specialty is Thomas Feely?

Thomas Feely is registered in NPPES with the primary taxonomy of Internal Medicine Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Geetha Pillai Internal Medicine Physician · Leesburg, VA NPI 1356335301 Richard Kim Internal Medicine Physician · Leesburg, VA NPI 1902890981 Loudoun Medical Group, PC Internal Medicine Physician · Leesburg, VA NPI 1093839599 Catherine Williams Family Nurse Practitioner · Leesburg, VA NPI 1851870786 Meredith Soriano Gerontology Nurse Practitioner · Leesburg, VA NPI 1962034066 Loudoun Medical Group, PC Speech-Language Pathologist · Leesburg, VA NPI 1154092724 Jessica Erim Physician Assistant · Leesburg, VA NPI 1093479339 Megan George Family Nurse Practitioner · Leesburg, VA NPI 1720867781

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-10-02.