John William Duff, MD
Family Medicine Physician · Midland, MI
John William Duff, MD is a family medicine physician with a practice address in Midland, Michigan, and NPI 1225125222, issued on Oct 10, 2006. Check the license (Michigan JD088515, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- John William Duff
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- JD088515 MI
4301088515 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2213 Dilloway Dr, Midland, MI 48640
- Phone
- (989) 493-3882
- Enumerated
- Oct 10, 2006
- Record last updated
- Apr 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20090202000576); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 6,013 in Michigan → Look up another NPI →
Verify John William Duff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license JD088515Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
87% fewer Medicare Part D claims than the average family medicine physician in 2024
478 Medicare Part D claims for 296 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 58 claims were for opioids.
Most prescribed
- Prednisone48 claims
- Hydrocodone-Acetaminophen47 claims
- Ondansetron Hcl38 claims
- Nitrofurantoin Mono-Macro20 claims
- Cyclobenzaprine Hcl16 claims
- Albuterol Sulfate Hfa15 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.
2 hospital affiliations
- Mymichigan Medical Center MidlandMidland, MI · Acute Care Hospitals4 of 5 stars
- Mymichigan Medical Center ClareClare, MI · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
John William Duff among 6,013 family medicine physician records in Michigan
John William Duff, MD is one of 6,013 family medicine physician records with a practice address in Michigan. 75% 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 11% of them.
- NPI issued2006 · 11% of these records are older, 56% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2006 · median 2008 among the 3,493 with a school on file
- Record last updated2011 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
107 family medicine physician records list a practice address in Midland
They are 107 of the 2,324 NPPES records with a practice address in Midland, and 6,013 family medicine physician records in Michigan.
All 6,013 in Michigan → Every provider in Midland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Michael Beaulieu, MDMidland, MI 486401912939117
- Lorenzo Berlanga, M.D.Midland, MI 486401063487411
- Kirk Bortel, M.D.Midland, MI 486401063466837
- Sheree Clark, M.D.Midland, MI 486401033138987
- Gail Colby, M.D.Midland, MI 486401770502593
- Jerry Ferrell, MDMidland, MI 486401154390409
- Yolanda Fong, MDMidland, MI 486401700893195
- James Frye, MDMidland, MI 486401942279286
Common questions
What is John William Duff, MD's NPI number?
John William Duff, MD's National Provider Identifier (NPI) is 1225125222, issued on Oct 10, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John William Duff, MD located?
The NPPES record lists a practice address at 2213 Dilloway Dr, Midland, MI, 48640. Phone: (989) 493-3882. Providers update this record themselves, so call before visiting.
How can I verify John William Duff, MD's license?
NPPES lists Michigan license number JD088515, 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 John William Duff, MD prescribe under Medicare Part D?
In 2024, John William Duff, MD had 478 Medicare Part D claims for 296 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.