John William Mack, DO
Emergency Medicine Physician · Lansing, MI
John William Mack, DO is an emergency medicine physician with a practice address in Lansing, Michigan, and NPI 1164384434, issued on Nov 25, 2025. Check the license (Michigan 5151017724, as entered in NPPES) on the Michigan Board of Medicine (LARA); the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John William Mack
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 5151017724 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2900 Collins RD, Lansing, MI 48910
- Phone
- (517) 975-6000
- Enumerated
- Nov 25, 2025
- Record last updated
- Nov 25, 2025
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,083 in Michigan → Look up another NPI →
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A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify John William Mack in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5151017724Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John William Mack among 3,083 emergency medicine physician records in Michigan
John William Mack, DO is one of 3,083 emergency medicine 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 not. Its NPI, issued in 2025, is newer than 96% of them.
- NPI issued2025 · 96% of these records are older, 2% newer
- In a Medicare fileNo · 82% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
114 emergency medicine physician records list a practice address in Lansing
They are 114 of the 5,276 NPPES records with a practice address in Lansing, and 3,083 emergency medicine physician records in Michigan. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 3,083 in Michigan → Every provider in Lansing → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Edward Czarnecki, DOLansing, MI 489101962197590
- Tyler Dettro, MDLansing, MI 489101932636149
- Aaron Dora-Laskey, M.D.Lansing, MI 489101093909921
- William Dunker, DOLansing, MI 489101386711422
- Scott EvansLansing, MI 489101801245618
- Oliver Hayes, D.O.Lansing, MI 489101528078417
- Mary Hughes, DOLansing, MI 489101386657005
- Rachel Lin, DOLansing, MI 489101396439147
Common questions
What is John William Mack, DO's NPI number?
John William Mack, DO's National Provider Identifier (NPI) is 1164384434, issued on Nov 25, 2025. An NPI identifies a provider in billing; it is not a license.
Where is John William Mack, DO located?
The NPPES record lists a practice address at 2900 Collins RD, Lansing, MI, 48910. Phone: (517) 975-6000. Providers update this record themselves, so call before visiting.
How can I verify John William Mack, DO's license?
NPPES lists Michigan license number 5151017724, 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.
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.