Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen Hamilton Marcus, PRSS

Peer Specialist in Charleston, WV · enumerated 2023.

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

National Provider Identifier

1275312043

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Registry record

Entity type Individual (Type 1)

Name Stephen Hamilton Marcus

Credential PRSS

Sex Male

Practice address 705 S Park Rd, Charleston, WV, 25304

Phone (304) 446-2336

Enumeration date Sep 21, 2023

Last updated in NPPES Sep 21, 2023

Taxonomy & licenses

175T00000X Peer Specialist Other Service Providers · License 23-9154 (WV) 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1275312043 active?

Yes, as of the latest NPPES snapshot, NPI 1275312043 is active (record last updated 2023-09-21).

How do I verify Stephen Marcus's NPI record?

Cross-check NPI 1275312043 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-09-21.