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

Cheyenne Alissa Muelthaler, LCSW

Social Worker in Bay Shore, NY · enumerated 2021.

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

National Provider Identifier

1841961943

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Registry record

Entity type Individual (Type 1)

Name Cheyenne Alissa Muelthaler

Credential LCSW

Sex Female

Practice address Bay Shore, NY, 11706

Phone (631) 553-4534

Enumeration date Sep 28, 2021

Last updated in NPPES May 13, 2026

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

Taxonomy & licenses

104100000X Social Worker Behavioral Health & Social Service Providers · License 101004 (NY) Primary

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

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 1841961943 active?

Yes, as of the latest NPPES snapshot, NPI 1841961943 is active (record last updated 2026-05-13).

How do I verify Cheyenne Muelthaler's NPI record?

Cross-check NPI 1841961943 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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