Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

John J. Fainsan, MSPT, CSCS

Q: What is the NPI number for John Fainsan?

The National Provider Identifier (NPI) for John Fainsan is 1548211840, a Type 1 (individual) record in the CMS NPPES registry.

Physical Therapist in Reston, VA · enumerated 2006.

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

National Provider Identifier

1548211840

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Registry record

Entity type Individual (Type 1)

Name John J. Fainsan

Credential MSPT, CSCS

Sex Male

Practice address 11800 Sunrise Valley Dr, 100, Reston, VA, 20191

Phone (703) 709-1116

Fax (703) 709-5134

Enumeration date May 12, 2006

Last updated in NPPES Jan 12, 2022

Taxonomy & licenses

174400000X Specialist Other Service Providers · License 9576 (CO) Secondary

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 2305207532 (VA) Primary

Other identifiers

Identifier	Type	State	Issuer
9576	Other	CO	PHYSICAL THERAPY

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 is the NPI number for John Fainsan?

The National Provider Identifier (NPI) for John Fainsan is 1548211840, a Type 1 (individual) record in the CMS NPPES registry.

Where does John Fainsan practice?

The practice location on file with NPPES is in Reston, VA. Providers can have multiple locations; NPPES lists the primary practice address.

Other providers at this practice address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-01-12.