MICHAEL H ZAKEM D.O.
NPI 1316948771
Internal Medicine - Hematology & Oncology in Grand Rapids, MI
About Michael H Zakem D.o. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MICHAEL H ZAKEM D.O. (NPI 1316948771) is an individual hematology & oncology provider in Grand Rapids, Michigan, licensed in Michigan (5101007887) and active in the NPI registry since August 2005. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 2
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Michael H Zakem D.o. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Michael Zakem reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Wyoming, MI 49519
- Reassigned Medicare billing, Michigan enrollment
- 45 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 25
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 49546 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
GRAND RAPIDS, MI 49546
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 Michael Zakem's NPI number?
The NPI number for Michael Zakem is 1316948771. It was assigned to this individual provider in the NPPES registry on August 9, 2005.
Where is Michael Zakem located?
Michael Zakem practices at 5800 Foremost Dr SE Ste 200, Grand Rapids, MI 49546. The listed phone number is (616) 389-1800.
What is Michael Zakem's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.
Is Michael Zakem enrolled in Medicare?
Yes. Michael Zakem is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Michael Zakem's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Michael Zakem 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 Michael Zakem'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 Michael Zakem was last updated on December 2, 2022. 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.