Jon Williams, DO
Emergency Medicine Physician · Kalamazoo, MI
Jon Williams, DO is an emergency medicine physician with a practice address in Kalamazoo, Michigan, and NPI 1205339058, issued on Mar 16, 2018. Check the license (Michigan 5101026921, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Jon Williams
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- 5101026921 MI
5151014599 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1000 Oakland Dr, Kalamazoo, MI 49008
- Phone
- (269) 337-6039
- Enumerated
- Mar 16, 2018
- Record last updated
- Oct 18, 2022
- Medicare enrollment
- Enrolled (PECOS I20230630000008); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,083 in Michigan → Look up another NPI →
Also registered at 1000 Oakland Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Syed Muhammad Abbas, MDStudent in an Organized Health Care Education/Training Program1093697260
- Saja AbdelhadiStudent in an Organized Health Care Education/Training Program1003654070
- Peter Abdou, MEDICAL STUDENT (MD)Student in an Organized Health Care Education/Training Program1578243721
- Ramsha Abdul Qadir, MDStudent in an Organized Health Care Education/Training Program1972493583
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Verify Jon Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 5101026921Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average emergency medicine physician in 2024
186 Medicare Part D claims for 142 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 20 claims were for opioids.
Most prescribed
- Cephalexin32 claims
- Ondansetron Hcl21 claims
- Hydrocodone-Acetaminophen14 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.
Bills Medicare through 2 group practices
- Caribou Medical Center, IncSoda Springs, ID
- Emergency Physicians Integrated Care LLCIdaho Falls, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jon Williams among 3,083 emergency medicine physician records in Michigan
Jon Williams, 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. Its NPI, issued in 2018, is newer than 69% of them.
- NPI issued2018 · 69% of these records are older, 26% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2020 · median 2013 among the 1,931 with a school on file
- Record last updated2022 · 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).
154 emergency medicine physician records list a practice address in Kalamazoo
They are 154 of the 6,553 NPPES records with a practice address in Kalamazoo, and 3,083 emergency medicine physician records in Michigan.
All 3,083 in Michigan → Every provider in Kalamazoo → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Beth Armstrong, M.D.Kalamazoo, MI 490081114984127
- Brenda Becker, MDKalamazoo, MI 490081679774244
- Brigitte Bigelow, MDKalamazoo, MI 490081780885368
- Scott Cline, M.D.Kalamazoo, MI 490081295886802
- William Fales, M.D.Kalamazoo, MI 490081063473114
- Lisa Forrest, MDKalamazoo, MI 490081821051822
- Marc Headapohl, M.D.Kalamazoo, MI 490081033158159
- Nathaniel Johnson, MDKalamazoo, MI 490081295937720
Common questions
What is Jon Williams, DO's NPI number?
Jon Williams, DO's National Provider Identifier (NPI) is 1205339058, issued on Mar 16, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Jon Williams, DO located?
The NPPES record lists a practice address at 1000 Oakland Dr, Kalamazoo, MI, 49008. Phone: (269) 337-6039. Providers update this record themselves, so call before visiting.
How can I verify Jon Williams, DO's license?
NPPES lists Michigan license number 5101026921, 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 Jon Williams, DO prescribe under Medicare Part D?
In 2024, Jon Williams, DO had 186 Medicare Part D claims for 142 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.
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.