NPPES file of Aug 9, 2026

Michael H. Zakem, D.O.

Hematology & Oncology Physician · Grand Rapids, MI

Michael H. Zakem, D.O. is a hematology & oncology physician with a practice address in Grand Rapids, Michigan, and NPI 1316948771, issued on Aug 9, 2005. Check the license (Michigan 5101007887, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1316948771
Name
Michael H. Zakem
Credential
D.O.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
5101007887 MI
Self-reported in NPPES; status is on the state search
Practice location
5800 Foremost Dr SE Ste 200, Grand Rapids, MI 49546
Phone
(616) 389-1800
Enumerated
Aug 9, 2005
Record last updated
Dec 2, 2022
Fax
(616) 389-1839
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest hematology & oncology physician records → All 340 in Michigan → Look up another NPI →

Also registered at 5800 Foremost Dr SE Ste 200

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Joy BartholomewFamily Nurse Practitioner1265498208
  2. Luke Eastburg, MDHematology (Internal Medicine) Physician1649626508
  3. Sonya Inderbitzin-Fischer, MDHematology (Internal Medicine) Physician1184128670
  4. Elizabeth Pohl, NPGerontology Nurse Practitioner1033883723
  5. Tanya Rowerdink, N.P.Gerontology Nurse Practitioner1841720133
  6. Megan Sawyer, N.P.Family Nurse Practitioner1942603790

Verify Michael H. Zakem in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
    Search for license 5101007887    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Michigan license search

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30% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

616 Medicare Part D claims for 102 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims. 12 claims were for opioids.

  1. Michael Zakem616
  2. Specialty average877

Most prescribed

  1. Hydroxyurea213 claims
  2. Eliquis91 claims
  3. Acyclovir52 claims
  4. Xarelto30 claims
  5. Brukinsa25 claims
  6. Dexamethasone16 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $18.12

1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Zakem$18.12
  2. Specialty average$7,481.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Michael H. Zakem among 340 hematology & oncology physician records in Michigan

Michael H. Zakem, D.O. is one of 340 hematology & oncology physician records with a practice address in Michigan. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 86% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileNo · 61% of these records are
  • Record last updated2022 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in Michigan

There are 340 hematology & oncology physician records in Michigan.

All 340 in Michigan → Every provider in Grand Rapids → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Daniel Foley, MDGrand Rapids, MI 495461104486166
  2. Nehal Lakhani, M.D.Grand Rapids, MI 495461598986986
  3. Andrew Sochacki, M.D.Grand Rapids, MI 495461003235391
  4. Frances Wong, MDGrand Rapids, MI 495461568641074
  5. Heidi Egloff, MDWyoming, MI 495191487093274
  6. Wendy French, DOWyoming, MI 495191891737847
  7. Daniel Taylor, DOWyoming, MI 495191770076663
  8. Peter Van Veldhuizen, M.D.Wyoming, MI 495191336163138

Common questions

What is Michael H. Zakem, D.O.'s NPI number?

Michael H. Zakem, D.O.'s National Provider Identifier (NPI) is 1316948771, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Michael H. Zakem, D.O. located?

The NPPES record lists a practice address at 5800 Foremost Dr SE Ste 200, Grand Rapids, MI, 49546. Phone: (616) 389-1800. Providers update this record themselves, so call before visiting.

How can I verify Michael H. Zakem, D.O.'s license?

NPPES lists Michigan license number 5101007887, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Michael H. Zakem, D.O. prescribe under Medicare Part D?

In 2024, Michael H. Zakem, D.O. had 616 Medicare Part D claims for 102 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.