Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Shirley Grassflower, N.P.

Nurse Practitioner in Dowagiac, MI · enumerated 2006.

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

National Provider Identifier

1023041548

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Registry record

Entity type Individual (Type 1)

Name Shirley Grassflower

Credential N.P.

Sex Female

Practice address 57392 M 51 S, Dowagiac, MI, 49047

Phone (269) 782-4141

Fax (269) 782-8797

Enumeration date Jul 8, 2006

Last updated in NPPES Jan 8, 2009

Taxonomy & licenses

363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License 4704092900 (MI) Primary

NP · Nurse Practitioner: An advanced practice registered nurse with graduate training, licensed to diagnose and treat, often with prescriptive authority. About the NP 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

What specialty is Shirley Grassflower?

Shirley Grassflower is registered in NPPES with the primary taxonomy of Nurse Practitioner. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Other providers at this practice address

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Charles White Internal Medicine Physician · Dowagiac, MI NPI 1669437612 Stephanie Ballew Addiction (Substance Use Disorder) Counselor · Dowagiac, MI NPI 1447429105 Susan Gundersen Registered Dietitian · Dowagiac, MI NPI 1609043918 Kathleen Basha Medical Physician Assistant · Dowagiac, MI NPI 1083932685 Daun Bieda Professional Counselor · Dowagiac, MI NPI 1730451964 Monique Miller Registered Dietitian · Dowagiac, MI NPI 1609115955 Lisa Wolske Nurse Practitioner · Dowagiac, MI NPI 1538670344 Community Care of Dowagiac, Pllc Internal Medicine Physician · Dowagiac, MI NPI 1427723675

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-08.