Dr. Michael C. Duffy, MD
- Medicare services, 2024
- 1,546
- Medicare patients, 2024
- 871
- Part D claims, 2024
- 1,721
- MIPS score, 2024
- 96
- Hospital affiliations
- 3
- Practice address
- 264 W Maple Road, Suite 100, Troy, MI 48084
- Practice phone
- Call (248) 269-5594
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Gastrointestinal Endoscopy Center - Troy
Surgery Center - Medicare-Certified · Troy, Michigan
Find Dr. Duffy's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Michael C. Duffy is a gastroenterologist in Troy, Michigan
Dr. Duffy practices at Gastrointestinal Endoscopy Center - Troy in Troy, Michigan.
Dr. Duffy's NPI, 1982693677, was assigned on October 17, 2005. Dr. Duffy graduated from Louisiana State University School of Medicine in New Orleans in 1974. Dr. Duffy holds Michigan license 052312.
- NPI
- 1982693677NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294631693
- NPI enumeration date
- October 17, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (248) 269-5594
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 78
- Medical school graduation
- 1974
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael C. Duffy practices at Gastrointestinal Endoscopy Center - Troy in Troy, Michigan
Dr. Duffy's primary practice is Gastrointestinal Endoscopy Center - Troy, at 264 W Maple Road, Suite 100, Troy, MI 48084. The practice phone is (248) 269-5594.
- Gastrointestinal Endoscopy Center - Troy264 W Maple Road, Suite 100, Troy, MI 48084Phone(248) 269-5594
Source: Dmand AI Affiliation Data
Dr. Michael C. Duffy is affiliated with 6 sites of care and 2 medical groups
Dr. Duffy's primary practice is Gastrointestinal Endoscopy Center - Troy in Troy, Michigan. Dr. Duffy is also affiliated with Corewell Health Beaumont Troy Hospital. The medical group on file is Beaumont Medical Group - Specialty Services. Dmand AI also links Dr. Duffy to 2 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael C. Duffy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duffy practices, 6 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Gastrointestinal Endoscopy Center - Troy | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Michael C. Duffy is one of 487 gastroenterologists in Michigan
Gastroenterology is Dr. Duffy's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Duffy is licensed in Michigan.
Specialties and state licenses
- Gastroenterology, MichiganPrimary
Gastroenterologists near Dr. Duffy
Counts of gastroenterologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Michael C. Duffy billed Medicare for 1,546 services in 2024
CMS data shows 1,546 Medicare services from Dr. Duffy across 17 procedure codes in 2024, for 871 Medicare patients. Medicare paid $115,593 for them.
Dr. Duffy's Medicare services by type, 2024
- Office and hospital visits642
- Lab and pathology580
- Surgery257
- Other services67
Where Dr. Duffy's Medicare services took place, 2024
- In an office1,03167%
- In a facility51533%
Dr. Duffy compared with the Michigan median for gastroenterologists, 2024
- Dr. Duffy
- Michigan median
- Medicare services
- 1,546vs 3244.8 times
- Medicare patients
- 871vs 2303.8 times
- Part D claims
- 1,534vs 4243.6 times
Medians across 487 gastroenterologists in Michigan with Dmand AI profiles that report each measure.
Dr. Duffy's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Michael C. Duffy treated 871 Medicare patients in 2024, average age 74
CMS counts 871 Medicare patients who saw Dr. Duffy in 2024. The largest group is 65 to 74, with 414 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.34, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Duffy's median patient age at 68, with 53% women.
Dr. Duffy's Medicare patients by age, 2024
Dr. Duffy's Medicare patients by sex, 2024
- Women49056%
- Men38144%
Chronic conditions among Dr. Duffy's Medicare patients, 2024
- High cholesterol75%
- High blood pressure71%
- Arthritis46%
- Ischemic heart disease36%
- Chronic kidney disease25%
- Diabetes25%
- Anxiety24%
- Cancer24%
Share of Medicare patients with each condition. A patient can have several.
Dr. Duffy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 68
Patient panel by sex, all payers
- Women53%
- Men47%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael C. Duffy wrote 1,721 Medicare Part D claims in 2024
In 2024, Dr. Duffy wrote 1,721 Medicare Part D claims for 560 patients. 92% of them were for generic drugs. CMS names the drug for 1,534 of them, across 26 drugs with 11 or more claims each, at $295,515 in total drug cost.
Dr. Duffy's Part D claims by kind of drug, 2024
- Generic1,582 claims92%
- Brand-name139 claims8%
Dr. Duffy's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Duffy's Part D claims, 2024
- Opioids1%23 of 1,721 claims
- Antibiotics1%13 of 1,721 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Michael C. Duffy scored 96 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 96 out of 100 for Dr. Duffy for performance year 2024, reported as part of a group. Dr. Duffy accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 113 procedures of colonoscopy by Dr. Duffy, more than 82% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Dr. Duffy's MIPS scores, performance year 2024
- 96of 100Final score
- 100of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 83of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Where Dr. Duffy ranks in Medicare procedure volume
- Colonoscopy
- 82nd percentile113 procedures
- Upper gastrointestinal (GI) endoscopy for acid reflux
- 73rd percentile84 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Michael C. Duffy received $442 in industry payments from 2024 to 2025
CMS Open Payments shows 13 general payments to Dr. Duffy from 7 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 77% of the total. Janssen Pharmaceuticals, Inc paid the most, $265.
General payments to Dr. Duffy by program year, 2024 to 2025
General payments to Dr. Duffy by kind, 2024 to 2025
- Food and beverage$34277%
- Education$10023%
Companies that paid Dr. Duffy the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael C. Duffy graduated from Louisiana State University School of Medicine in New Orleans
Dr. Duffy graduated from Louisiana State University School of Medicine in New Orleans in 1974.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael C. Duffy's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Michael C. Duffy
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Michael C. Duffy's NPI number?
Dr. Michael C. Duffy's NPI number is 1982693677. It was assigned on October 17, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael C. Duffy?
Dr. Michael C. Duffy is a gastroenterologist in Troy, Michigan. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Michael C. Duffy practice?
Dr. Duffy practices at 264 W Maple Road, Suite 100, Troy, MI 48084. Dr. Duffy's primary practice is Gastrointestinal Endoscopy Center - Troy in Troy, Michigan. Dmand AI also links Dr. Duffy to 2 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Michael C. Duffy's office phone number?
The practice phone on file for Dr. Duffy is (248) 269-5594.
What is Dr. Michael C. Duffy's medical license number?
Dr. Duffy holds Michigan license 052312.
Which hospitals is Dr. Michael C. Duffy affiliated with?
Dr. Duffy is affiliated with Corewell Health Beaumont Troy Hospital. Dmand AI links Dr. Duffy to 2 more hospitals.
What medical group is Dr. Michael C. Duffy part of?
Dr. Duffy is linked to Beaumont Medical Group - Specialty Services. Dmand AI links Dr. Duffy to 1 more medical group.
Does Dr. Michael C. Duffy accept Medicare?
Yes. CMS data shows Dr. Duffy billed Medicare for 1,546 services in 2024, and Dr. Duffy accepts Medicare assignment.
What is Dr. Michael C. Duffy's MIPS score?
Dr. Duffy's MIPS final score for performance year 2024 is 96 out of 100, reported as part of a group.
How many Medicare patients does Dr. Michael C. Duffy see?
CMS counts 871 Medicare patients who saw Dr. Duffy in 2024, with an average age of 74.
Show 5 more questionsShow fewer questions
What services does Dr. Michael C. Duffy bill to Medicare?
In 2024, Dr. Duffy's most billed Medicare services were lab and pathology test (88305), office visit, established patient (99213) and office visit, established patient (99214).
Where did Dr. Michael C. Duffy go to medical school?
Dr. Duffy graduated from Louisiana State University School of Medicine in New Orleans in 1974.
What drugs does Dr. Michael C. Duffy prescribe most?
In 2024 Medicare Part D data, Dr. Duffy's most prescribed drugs by claims were Omeprazole, Pantoprazole Sodium and Dicyclomine HCl.
Has Dr. Michael C. Duffy received payments from drug or device companies?
CMS Open Payments shows $442 in general payments to Dr. Duffy from 7 companies from 2024 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Michael C. Duffy been practicing?
Dr. Duffy graduated from medical school in 1974, 52 years ago.
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