Michael K. Duffy, MD
Family Medicine Physician · Twin Falls, ID
Michael K. Duffy, MD is a family medicine physician with a practice address in Twin Falls, Idaho, and NPI 1790742898, issued on May 1, 2006. Check the license (Idaho M-8822, as entered in NPPES) on the Idaho Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Michael K. Duffy
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- M-8822 ID
291582 MA
MD18385 ME
Self-reported in NPPES; status is on the state search - Practice location
- 388 Martin St, Twin Falls, ID 83301
- Phone
- (208) 734-0451
- Enumerated
- May 1, 2006
- Record last updated
- May 17, 2022
- Medicare enrollment
- Enrolled (PECOS I20100331000323); accepts Medicare assignment
- Entity
- Type 1 · individual
Also registered at 388 Martin St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Debra Allred, NPNurse Practitioner1285691865
- Kati Bremers, FNP-CFamily Nurse Practitioner1215880547
- Cathy Canty, M.D.Family Medicine Physician1013974658
- Cameron Clark, PA-CPhysician Assistant1407049422
- Ryan Hodges, PAPhysician Assistant1033413240
- Elinor Johnson, PA-CPhysician Assistant1619616885
Verify Michael K. Duffy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIdaho Board of Medicine
Search for license M-8822Check 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 family medicine physician in 2024
90 Medicare Part D claims for 34 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Tamsulosin Hcl11 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.
Industry payments in 2024: $23.07
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 55,478 providers of this specialty with any payment received $902.55 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 one group practice
- The Aroostook Medical CenterCaribou, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
46 family medicine physician records list a practice address in Twin Falls
They are 46 of the 1,660 NPPES records with a practice address in Twin Falls, and 1,316 family medicine physician records in Idaho.
All 46 in Twin Falls → All 1,316 in Idaho → Every provider in Twin Falls →
Other family medicine physician records in Idaho
- Peter Abraham, D.O.Eagle, ID1043650633
- Michael Abrahams, MDSt Maries, ID1700078581
- Suhrei Acevedo-Daniels, MDMelba, ID1508824640
- Brenda Adams, MDMeridian, ID1205887288
- Joshua Adams, M.D.Boise, ID1568789980
- Rebecca Adams, MDIdaho Falls, ID1689610842
- Tracy Adams, DOBoise, ID1003438730
- William Adams, DORigby, ID1467403733
- Grace Adamson, MDBoise, ID1497246136
- Lois Adrian, M.D.Hailey, ID1164463964
Common questions
What is Michael K. Duffy, MD's NPI number?
Michael K. Duffy, MD's National Provider Identifier (NPI) is 1790742898, issued on May 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Michael K. Duffy, MD located?
The NPPES record lists a practice address at 388 Martin St, Twin Falls, ID, 83301. Phone: (208) 734-0451. Providers update this record themselves, so call before visiting.
How can I verify Michael K. Duffy, MD's license?
NPPES lists Idaho license number M-8822, as entered by the provider. Search the Idaho Board of Medicine at https://dopl.idaho.gov/bom/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Michael K. Duffy, MD prescribe under Medicare Part D?
In 2024, Michael K. Duffy, MD had 90 Medicare Part D claims for 34 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.