Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. John J Hynes, M.D.

Pain Medicine (Anesthesiology) Physician in Fairfax, VA · enumerated 2006.

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

National Provider Identifier

1720006497

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Registry record

Entity type Individual (Type 1)

Name Dr. John J Hynes

Credential M.D.

Sex Male

Practice address 3600 Joseph Siewick Dr, Fairfax, VA, 22033

Phone (703) 391-3129

Fax (703) 295-9369

Enumeration date Jul 18, 2006

Last updated in NPPES Mar 17, 2016

Taxonomy & licenses

207LP2900X Pain Medicine (Anesthesiology) Physician Allopathic & Osteopathic Physicians · License 0101039546 (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
054338	Other	VA	ANTHEM
1720006497	Medicaid	VA	-
297396	Other	VA	AMERIGROUP
050048566	Other	VA	RAIL ROAD MEDICARE
4526-8289	Other	VA	CARE FIRST
493808	Other	VA	NCPPO
K142-0001	Other	VA	CARE FIRST

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 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.

What specialty is John Hynes?

John Hynes is registered in NPPES with the primary taxonomy of Pain Medicine (Anesthesiology) Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Other providers at this practice address

Browse all →

Maria Fain Certified Registered Nurse Anesthetist · Fairfax, VA NPI 1407854250 Harold Black Certified Registered Nurse Anesthetist · Fairfax, VA NPI 1831198084 Gloria Black Certified Registered Nurse Anesthetist · Fairfax, VA NPI 1003815267 Kathleen Beight Physical Therapist · Fairfax, VA NPI 1013916162 Charuta Moharir Physical Therapist · Fairfax, VA NPI 1194724252 Ellen Adams Pain Medicine (Anesthesiology) Physician · Fairfax, VA NPI 1871594796 Jeanine Kolman Physical Therapist · Fairfax, VA NPI 1295727899 Dina Darwish MD PC Internal Medicine Physician · Fairfax, VA NPI 1952386807

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-03-17.