Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Lynn M Ollswang, ACSW LCSW

Clinical Social Worker in Milwaukee, WI · enumerated 2006 · practices at Alliance Ent and Hearing Center, Sc.

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

National Provider Identifier

1861464729

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mrs. Lynn M Ollswang

Credential ACSW LCSW

Sex Female

Practice address 2524 E. Webster Place, Suite 203, Milwaukee, WI, 53211

Phone (414) 964-9200

Fax (414) 964-4816

Enumeration date Feb 6, 2006

Last updated in NPPES Nov 7, 2008

Taxonomy & licenses

1041C0700X Clinical Social Worker Behavioral Health & Social Service Providers · License 1353123 (WI) Primary

Other identifiers

Identifier	Type	State	Issuer
39656400	Medicaid	WI	-

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 Lynn Ollswang practice?

The practice location on file with NPPES is in Milwaukee, WI. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Lynn Ollswang?

The National Provider Identifier (NPI) for Lynn Ollswang is 1861464729, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

Browse all →

Jennifer Twente Pediatrics Physician · Milwaukee, WI NPI 1184675787 Alliance Ent and Hearing Center, Sc Otolaryngology Physician · Milwaukee, WI NPI 1972104156

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-11-07.