Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Janet Marie Millermaier, M.D.

Family Medicine Physician in Coopersville, MI · enumerated 2006.

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

National Provider Identifier

1558478370

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Janet Marie Millermaier

Credential M.D.

Sex Female

Practice address 25 Conran Drive, Suite B, Coopersville, MI, 49504

Phone (616) 267-7860

Fax (616) 267-7861

Enumeration date Aug 25, 2006

Last updated in NPPES Jul 6, 2023

Taxonomy & licenses

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 55461-20 (WI) Secondary

207Q00000X Family Medicine Physician Allopathic & Osteopathic Physicians · License 4301066454 (MI) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

How do I verify Janet Millermaier's NPI record?

Cross-check NPI 1558478370 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1558478370 active?

Yes, as of the latest NPPES snapshot, NPI 1558478370 is active (record last updated 2023-07-06).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-06.