Hiram Stephen Williams, M.D.
Pediatrics Physician · Okemos, MI
Hiram Stephen Williams, M.D. is a pediatrics physician with a practice address in Okemos, Michigan, and NPI 1538191259, issued on Jul 6, 2006. Check the license (Michigan 4301059122, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Hiram Stephen Williams
- Credential
- M.D.
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 4301059122 MI
Self-reported in NPPES; status is on the state search - Practice location
- 1600 W Grand River Ave, Okemos, MI 48864
- Phone
- (517) 349-6560
- Enumerated
- Jul 6, 2006
- Record last updated
- Aug 22, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (517) 349-5796
- Medicaid IDs
- 4441219 MI
1538191259 MI - Entity
- Type 1 · individual
Also registered at 1600 W Grand River Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gerard Breitzer, D.O.Pediatrics Physician1669414116
- Angela Griffin, MDGynecology Physician1245321322
- Terri Meunier, DOFamily Medicine Physician1265525356
- Kenneth Stringer, D.O.Pediatrics Physician1891896940
- Kathleen WaldronFamily Medicine Physician1447274659
- Jan Wu, MDFamily Medicine Physician1831294016
Verify Hiram Stephen Williams in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301059122Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average pediatrics physician in 2024
24 Medicare Part D claims, against an average of 375 among the 5,609 providers of this specialty who prescribed in Part D.
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.
11 pediatrics physician records list a practice address in Okemos
They are 11 of the 1,487 NPPES records with a practice address in Okemos, and 2,180 pediatrics physician records in Michigan.
All 11 in Okemos → All 2,180 in Michigan → Every provider in Okemos →
Other pediatrics physician records in Michigan
- Amal Abd AllahLansing, MI1841960812
- Abdalla Abdalla-Ali, MDLansing, MI1134101074
- Tassneem Abdel Karim, MDLansing, MI1477971703
- Lukman Abdurrahim, MDGrand Rapids, MI1467905091
- Samuel Abebe, MDYpsilanti, MI1003256421
- Yusra Abidi, M.D.Troy, MI1740695048
- Patricia Abinoja, M.D.Oak Park, MI1023108792
- Carol Abiragi, M.D.New Baltimore, MI1801902184
- Roger Abiragi, M.D.New Baltimore, MI1841306180
- Doaa AbouallaSaginaw, MI1861282337
Common questions
What is Hiram Stephen Williams, M.D.'s NPI number?
Hiram Stephen Williams, M.D.'s National Provider Identifier (NPI) is 1538191259, issued on Jul 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Hiram Stephen Williams, M.D. located?
The NPPES record lists a practice address at 1600 W Grand River Ave, Okemos, MI, 48864. Phone: (517) 349-6560. Providers update this record themselves, so call before visiting.
How can I verify Hiram Stephen Williams, M.D.'s license?
NPPES lists Michigan license number 4301059122, 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 Hiram Stephen Williams, M.D. prescribe under Medicare Part D?
In 2024, Hiram Stephen Williams, M.D. had 24 Medicare Part D claims; the average among pediatrics physician prescribers was 375. 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.