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JANET MARIE MILLERMAIER M.D.
NPI 1558478370
Family Medicine in Coopersville, MI

Active since August 25, 2006PECOS Enrolled
25 CONRAN DRIVE, SUITE B, COOPERSVILLE, MI 49504(616) 267-7860(616) 267-7861 Get Directions Write a Review

NPPES record last updated: July 6, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jul 6, 2023, Feb 18, 2021 (2 updates tracked since 2021).

About Janet Marie Millermaier M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JANET MARIE MILLERMAIER M.D. (NPI 1558478370) is an individual family medicine provider in Coopersville, Michigan, licensed in Michigan (4301066454) and active in the NPI registry since August 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1558478370
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameJANET MARIE MILLERMAIERCredential: M.D.
Location Address25 CONRAN DRIVE, SUITE BCoopersville, MI 49504-1366
Mailing Address100 Michigan Street Ne Mc 845Grand Rapids, MI 49503-2560 · (616) 486-6790
Phone(616) 267-7860
Fax(616) 267-7861
Sole ProprietorNo
Enumeration DateAugust 25, 2006
Last NPPES UpdateJuly 6, 20232 updates tracked since enumeration
NPPES CertifiedJuly 6, 2023
✔ NPI 1558478370 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in MI · 4301066454✔ Licensed in WI · 55461-20
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
25 CONRAN DRIVE, Coopersville, MI 49504
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Janet Marie Millermaier M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Janet Millermaier reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Spectrum Health Primary Care Partners
15 mi
Occupational Medicine
973 OTTAWA AVE NW
Grand Rapids, MI 49503
  • Reassigned Medicare billing, Michigan enrollment
  • 2,446 clinicians in this Medicare group
NPI 1194141341 (616) 391-2778

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 49504 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$84.74 typical visit price
range $54.34 – $166.68
Typical copayment $21.18 (range $13.58 – $41.67)
Most-billed visit code 99203
Established Patient
$96.44 typical visit price
range $17.09 – $135.40
Typical copayment $24.11 (range $4.27 – $33.85)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Janet Millermaier's NPI number?

The NPI number for Janet Millermaier is 1558478370. It was assigned to this individual provider in the NPPES registry on August 25, 2006.

Where is Janet Millermaier located?

Janet Millermaier practices at 25 Conran Drive Suite B, Coopersville, MI 49504. The listed phone number is (616) 267-7860.

What is Janet Millermaier's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Janet Millermaier enrolled in Medicare?

Yes. Janet Millermaier is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Janet Millermaier's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Janet Millermaier reassigns Medicare benefits to Spectrum Health Primary Care Partners (Grand Rapids, MI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Janet Millermaier's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Janet Millermaier was last updated on July 6, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.