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

Avelyn Marshall, LMSW

Clinical Social Worker in Okemos, MI · enumerated 2007 · practices at Mareck Family and Geriatric Services, P.C..

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

National Provider Identifier

1396861928

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Avelyn Marshall

Credential LMSW

Sex Female

Practice address Okemos, MI, 48864

Phone (517) 886-3707

Fax (517) 349-1973

Enumeration date Mar 22, 2007

Last updated in NPPES Jun 29, 2012

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 6801016708 (MI) Primary

Other identifiers

Identifier	Type	State	Issuer
138194	Other	MI	BLUE CARE NETWORK
1001650	Other	MI	MCLAREN
138194	Other	MI	VALUE OPTIONS
214678195	Other	MI	PHP-UBH
8008973350	Other	MI	MESSA - BLUE CROSS

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

How do I verify Avelyn Marshall's NPI record?

Cross-check NPI 1396861928 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1396861928 active?

Yes, as of the latest NPPES snapshot, NPI 1396861928 is active (record last updated 2012-06-29).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2012-06-29.