NPPES file of Aug 9, 2026

William Marc Katz, MD

Sleep Medicine (Internal Medicine) Physician · Wyoming, MI

William Marc Katz, MD is a sleep medicine (internal medicine) physician with a practice address in Wyoming, Michigan, and NPI 1013024140, issued on Aug 24, 2006. Check the license (Michigan 4301044867, as entered in NPPES) on the Michigan Board of Medicine (LARA); the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1013024140
Name
William Marc Katz
Credential
MD
Primary taxonomy
Sleep Medicine (Internal Medicine) Physician 207RS0012X
License number
4301044867 MI
Self-reported in NPPES; status is on the state search
Practice location
2093 Health Dr SW, Wyoming, MI 49519
Phone
(616) 459-3158
Enumerated
Aug 24, 2006
Record last updated
Jun 22, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(616) 819-2222
Medicaid ID
1896734 MI
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 sleep medicine (internal medicine) physician records → All 52 in Michigan → Look up another NPI →

Also registered at 2093 Health Dr SW

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

  1. Rudolph Addy, MDPsychiatry Physician1003839168
  2. Thomas Bilisko, MDInternal Medicine Physician1275537011
  3. Michael Bultje, DOFamily Medicine Physician1144224882
  4. Miranda Deal, RDNRegistered Dietitian1902640832
  5. Armita Ghoddousi, DOGastroenterology Physician1396050118
  6. Emily Haligowski, FNPFamily Nurse Practitioner1518243278

Verify William Marc Katz 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 4301044867    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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William Marc Katz among 52 sleep medicine (internal medicine) physician records in Michigan

William Marc Katz, MD is one of 52 sleep medicine (internal medicine) physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 0% of them.

  • NPI issued2006 · 0% of these records are older, 67% newer
  • In a Medicare fileNo · 79% of these records are
  • In the CMS Doctors and Clinicians fileNo · 58% of these records are
  • Record last updated2010 · 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 207RS0012X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Sleep Medicine (Internal Medicine) Physician providers in Michigan

There are 52 sleep medicine (internal medicine) physician records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 52 in Michigan → Every provider in Wyoming → Sleep Medicine (Internal Medicine) Physician nationwide →

The 8 sleep medicine (internal medicine) physician records with the nearest ZIP codes

  1. Soumya Madala, M.D.Grand Rapids, MI 495031043334527
  2. David Shen, MDGrand Rapids, MI 495031114120771
  3. Jason Coles, MDGrand Rapids, MI 495461619088580
  4. Ravichand Madala, M.D.Grand Rapids, MI 495461083730907
  5. Jeremy Petrous, DOGrand Rapids, MI 495461639584196
  6. Kelly Waters, M.D.Grand Rapids, MI 495461821232455
  7. Conrad Kozlowski, MDMuskegon, MI 494441710479399
  8. Nathan Boss, M.D.Charlevoix, MI 497201699794958

Common questions

What is William Marc Katz, MD's NPI number?

William Marc Katz, MD's National Provider Identifier (NPI) is 1013024140, issued on Aug 24, 2006. An NPI identifies a provider in billing; it is not a license.

Where is William Marc Katz, MD located?

The NPPES record lists a practice address at 2093 Health Dr SW, Wyoming, MI, 49519. Phone: (616) 459-3158. Providers update this record themselves, so call before visiting.

How can I verify William Marc Katz, MD's license?

NPPES lists Michigan license number 4301044867, 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.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.