Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Peter Johnsen, LMSW

Clinical Social Worker in Olney, MD · enumerated 2021 · practices at Filotimo Therapy LLC.

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

National Provider Identifier

1194314815

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Registry record

Entity type Individual (Type 1)

Name Peter Johnsen

Credential LMSW

Sex Male

Practice address Olney, MD, 20832

Phone (202) 713-6577

Enumeration date Jan 17, 2021

Last updated in NPPES Jan 17, 2021

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 25646 (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

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 Peter Johnsen?

Peter Johnsen is registered in NPPES with the primary taxonomy of Clinical Social Worker. 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 Johnsen Social Worker · Olney, MD NPI 1750910063 Filotimo Therapy LLC Mental Health Counselor · Olney, MD NPI 1326708116 Kimberly Scroger Professional Counselor · Olney, MD NPI 1417798265

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-17.