Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Gary S Fialk, M.D.

Urology Physician in Reston, VA · enumerated 2006.

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

National Provider Identifier

1376518670

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Registry record

Entity type Individual (Type 1)

Name Dr. Gary S Fialk

Credential M.D.

Sex Male

Practice address 1860 Town Center Dr, Suite 180, Reston, VA, 20190

Phone (703) 689-3311

Fax (703) 435-0137

Enumeration date Feb 21, 2006

Last updated in NPPES Dec 3, 2013

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 0101053797 (VA) Secondary

208800000X Urology Physician Allopathic & Osteopathic Physicians · License 010153797 (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
007502117	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.

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Frequently asked questions

How do I verify Gary Fialk's NPI record?

Cross-check NPI 1376518670 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1376518670 active?

Yes, as of the latest NPPES snapshot, NPI 1376518670 is active (record last updated 2013-12-03).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-12-03.