NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Sharon Lynn Griswold, L.M.S.W.

Clinical Social Worker in Grand Haven, MI · enumerated 2019.

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

National Provider Identifier

1154975753

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Mrs. Sharon Lynn Griswold
Credential L.M.S.W.
Sex Female
Practice address 234 1/2 Washington Ave, Grand Haven, MI, 49417
Enumeration date Jul 31, 2019
Last updated in NPPES Sep 5, 2019

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 6801062288 (MI) 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

Where does Sharon Griswold practice?
The practice location on file with NPPES is in Grand Haven, MI. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Sharon Griswold?
The National Provider Identifier (NPI) for Sharon Griswold is 1154975753, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2019-09-05.