DR. HALEY ZIMMER M.D.
NPI 1932580883
Internal Medicine in Grand Rapids, MI
About Dr. Haley Zimmer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HALEY ZIMMER M.D. (NPI 1932580883) is an individual internal medicine provider in Grand Rapids, Michigan, licensed in Michigan (4301107547) and active in the NPI registry since June 2015. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Haley Zimmer M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Haley Zimmer reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Wyoming, MI 49548
- Reassigned Medicare billing, Michigan enrollment
- 685 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
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 Haley Zimmer's NPI number?
The NPI number for Haley Zimmer is 1932580883. It was assigned to this individual provider in the NPPES registry on June 17, 2015.
Where is Haley Zimmer located?
Haley Zimmer practices at 25 Michigan St NE #2100, Grand Rapids, MI 49503. The listed phone number is (616) 391-3777.
What is Haley Zimmer's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Haley Zimmer enrolled in Medicare?
Yes. Haley Zimmer is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Haley Zimmer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Haley Zimmer reassigns Medicare benefits to Metropolitan Hospital (Wyoming, 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 Haley Zimmer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Haley Zimmer accept?
Health plans from Priority Health list Haley Zimmer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Haley Zimmer was last updated on October 29, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Dr. Haley Zimmer, M.D. · NPI 1932580883
Internal Medicine physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since June 17, 2015.
## Identity
- **NPI:** 1932580883 (Entity type: Individual)
- **Enumerated:** June 17, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 4301107547 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 25 MICHIGAN ST NE, #2100, Grand Rapids, MI 49503-2515
- **Phone:** (616) 391-3777
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Metropolitan Hospital (NPI 1114947538, Wyoming, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 29, 2019
---
Source: [NPI Profile](https://npiprofile.com/npi/1932580883) · Data from the CMS NPPES public registry.