William C. Keimig, M.D.
Internal Medicine Physician · Detroit, MI
William C. Keimig, M.D. is an internal medicine physician with a practice address in Detroit, Michigan, and NPI 1730257288, issued on Dec 1, 2006. Check the license (Michigan 4301035917, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- William C. Keimig
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301035917 MI
Self-reported in NPPES; status is on the state search - Practice location
- Henry Ford Health System, Detroit, MI 48202
- Phone
- (313) 916-2436
- Enumerated
- Dec 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100618000733); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at Henry Ford Health System
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William C. Keimig in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301035917Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
96 Medicare Part D claims for 32 beneficiaries, against an average of 3,176 among the 108,855 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.
Bills Medicare through one group practice
- Henry Ford Health SystemDetroit, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William C. Keimig among 5,735 internal medicine physician records in Michigan
William C. Keimig, M.D. is one of 5,735 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. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1974 · median 2006 among the 3,564 with a school on file
- Record last updated2007 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
617 internal medicine physician records list a practice address in Detroit
They are 617 of the 19,832 NPPES records with a practice address in Detroit, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Detroit → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- Shireen Brohi, M.D.Detroit, MI 482021457301806
- Fawwaz Humayun, MD.Detroit, MI 482021417966003
- Jabin Jalil, M.D.Detroit, MI 482021982676391
- Narjis Kazmi, M.DDetroit, MI 482021588638621
- Imran Khalid, M.D.Detroit, MI 482021578523684
Common questions
What is William C. Keimig, M.D.'s NPI number?
William C. Keimig, M.D.'s National Provider Identifier (NPI) is 1730257288, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is William C. Keimig, M.D. located?
The NPPES record lists a practice address at Henry Ford Health System, Detroit, MI, 48202. Phone: (313) 916-2436. Providers update this record themselves, so call before visiting.
How can I verify William C. Keimig, M.D.'s license?
NPPES lists Michigan license number 4301035917, 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 William C. Keimig, M.D. prescribe under Medicare Part D?
In 2024, William C. Keimig, M.D. had 96 Medicare Part D claims for 32 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.