Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
John J. Moynihan, M.D.
Surgery Physician in Fairfax, VA · enumerated 2005.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1932195914
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Registry record
Entity type Individual (Type 1)
Name John J. Moynihan
Credential M.D.
Sex Male
Practice address 3620 Joseph Siewick Dr, Suite 406, Fairfax, VA, 22033
Phone (703) 359-8640
Fax (703) 591-6105
Enumeration date Sep 23, 2005
Last updated in NPPES Nov 27, 2023
Taxonomy & licenses
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 |
|---|---|---|---|
| 7374101 | 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.
Frequently asked questions
What specialty is John Moynihan?
John Moynihan is registered in NPPES with the primary taxonomy of Surgery 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
Browse all → Adil Ghauri Internal Medicine Physician · Fairfax, VA NPI 1689671414 Bridget Wolfe Certified Registered Nurse Anesthetist · Fairfax, VA NPI 1659371342 Keith Lawhorn Orthopaedic Surgery Physician · Fairfax, VA NPI 1083614218 Leonard Fischer Gastroenterology Physician · Fairfax, VA NPI 1487614863 Laurel Kortum Pain Medicine (Anesthesiology) Physician · Fairfax, VA NPI 1295773729 Chethana Rao Internal Medicine Physician · Fairfax, VA NPI 1710917869 Ryan Fitzmorris Physician Assistant · Fairfax, VA NPI 1982621157 Jennifer Ott Physical Therapist · Fairfax, VA NPI 1609897438
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-11-27.