NPI Portal NPI Lookup & Verification

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

Mr. Peter Scott Markman, LCSW

Clinical Social Worker in Catskill, NY · enumerated 2017 · practices at Catskill School.

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

National Provider Identifier

1417475088

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Registry record

Entity type Individual (Type 1)
Name Mr. Peter Scott Markman
Credential LCSW
Sex Male
Practice address Catskill, NY, 12414
Phone (518) 719-1440
Fax (518) 719-1538
Enumeration date Sep 5, 2017
Last updated in NPPES Sep 5, 2017

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 085749 (NY) Primary
LCSW · Licensed Clinical Social Worker: A social worker licensed for clinical practice including mental-health therapy. About the LCSW credential

Other identifiers

Identifier Type State Issuer
085749 Other NY LCSW

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

How do I verify Peter Markman's NPI record?
Cross-check NPI 1417475088 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Is NPI 1417475088 active?
Yes, as of the latest NPPES snapshot, NPI 1417475088 is active (record last updated 2017-09-05).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2017-09-05.