Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Michael S. Johnston, M.S.P.T.

Physical Therapist in Frederick, MD · enumerated 2007.

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

National Provider Identifier

1679691075

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Registry record

Entity type Individual (Type 1)

Name Michael S. Johnston

Credential M.S.P.T.

Sex Male

Practice address 187 Thomas Johnson Dr, Suite 6, Frederick, MD, 21702

Phone (301) 663-1157

Fax (301) 663-1229

Enumeration date Mar 26, 2007

Last updated in NPPES Jun 25, 2008

Taxonomy & licenses

225100000X Physical Therapist Respiratory, Developmental, Rehabilitative and Restorative Service Providers · License 17254 (MD) Primary

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

Where does Michael Johnston practice?

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

What is the NPI number for Michael Johnston?

The National Provider Identifier (NPI) for Michael Johnston is 1679691075, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-25.