Michael C. Duffy, MD
Gastroenterology Physician · Troy, MI
Michael C. Duffy, MD is a gastroenterology physician with a practice address in Troy, Michigan, and NPI 1982693677, issued on Oct 17, 2005. Check the license (Michigan 052312, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Michael C. Duffy
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 052312 MI
Self-reported in NPPES; status is on the state search - Practice location
- 264 W Maple RD, Troy, MI 48084
- Phone
- (248) 273-9930
- Enumerated
- Oct 17, 2005
- Record last updated
- Jul 13, 2026
- Fax
- (248) 273-9931
- Medicaid ID
- 1862816 MI
- Medicare enrollment
- Enrolled (PECOS I20100319000476); accepts Medicare assignment
- Medical or professional school
- Louisiana State University School Of Medicine In New Orleans, 1974
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 550 in Michigan → Look up another NPI →
Also registered at 264 W Maple RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Thomas Alexander, MDGastroenterology Physician1215926902
- Jared Bortman, MDInternal Medicine Physician1023182037
- Michael Cannon, MDGastroenterology Physician1184613879
- Gehad Ghaith, M.D.Gastroenterology Physician1134119191
- Gregory Kulesza, MDGastroenterology Physician1053300509
- Dariusz Lazarczyk, MDGastroenterology Physician1083603500
Verify Michael C. Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 052312Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average gastroenterology physician in 2024
1,721 Medicare Part D claims for 560 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 8% of claims. 23 claims were for opioids.
Most prescribed
- Omeprazole739 claims
- Pantoprazole Sodium158 claims
- Dicyclomine Hcl77 claims
- Lansoprazole72 claims
- Mesalamine66 claims
- Rabeprazole Sodium32 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 81 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $276.99
9 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Beaumont Medical Group- Specialty ServicesFarmington Hills, MI
- Gastrointestinal Specialists PCTroy, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Michael C. Duffy among 550 gastroenterology physician records in Michigan
Michael C. Duffy, MD is one of 550 gastroenterology physician records with a practice address in Michigan. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 87% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 75% of these records are
- Graduated1974 · median 2003 among the 415 with a school on file
- Record last updated2026 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Michigan
There are 550 gastroenterology physician records in Michigan.
All 550 in Michigan → Every provider in Troy → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Thomas Alexander, MDTroy, MI 480841215926902
- Andrew Aneese, M.D.Troy, MI 480841366821639
- Michael Cannon, MDTroy, MI 480841184613879
- Gehad Ghaith, M.D.Troy, MI 480841134119191
- Maryconi Jacob, MDTroy, MI 480841548558588
- Gregory Kulesza, MDTroy, MI 480841053300509
- Dariusz Lazarczyk, MDTroy, MI 480841083603500
- Atulkumar Patel, MDTroy, MI 480841770572356
Common questions
What is Michael C. Duffy, MD's NPI number?
Michael C. Duffy, MD's National Provider Identifier (NPI) is 1982693677, issued on Oct 17, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Michael C. Duffy, MD located?
The NPPES record lists a practice address at 264 W Maple RD, Troy, MI, 48084. Phone: (248) 273-9930. Providers update this record themselves, so call before visiting.
How can I verify Michael C. Duffy, MD's license?
NPPES lists Michigan license number 052312, 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 Michael C. Duffy, MD prescribe under Medicare Part D?
In 2024, Michael C. Duffy, MD had 1,721 Medicare Part D claims for 560 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Michael C. Duffy, MD's MIPS final score?
The 2023 MIPS final score is 81 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.