NPPES file of Aug 9, 2026

Michael Duffy

Registered Dietitian · Phoenix, AZ

Michael Duffy is a registered dietitian with a practice address in Phoenix, Arizona, and NPI 1073241675, issued on Aug 11, 2022. Check the license (Arizona 86172466, as entered in NPPES) with the Arizona board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1073241675
Name
Michael Duffy
Primary taxonomy
Registered Dietitian 133V00000X
License number
86172466 AZ
Self-reported in NPPES; status is on the state search
Practice location
1919 E Thomas RD, Phoenix, AZ 85016
Phone
(602) 933-1000
Enumerated
Aug 11, 2022
Record last updated
Sep 1, 2023
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest registered dietitian records → All 1,435 in Arizona → Look up another NPI →

Also registered at 1919 E Thomas RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Asmaa Aamir, M.D.Diagnostic Radiology Physician1912163791
  2. Madeline Aaron, APRN-RNPPediatric Nurse Practitioner1851134837
  3. Brandon Abbott, D.O., M.P.H.Hospitalist Physician1528350139
  4. Jason AbbottStudent in an Organized Health Care Education/Training Program1184257958
  5. Monica Abd El Nour, MDPediatric Infectious Diseases Physician1760044101
  6. Lindsay Abel, DOStudent in an Organized Health Care Education/Training Program1750222055

Verify Michael Duffy in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license 86172466    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Arizona license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Michael Duffy among 1,435 registered dietitian records in Arizona

Michael Duffy is one of 1,435 registered dietitian records with a practice address in Arizona. 15% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2022, is newer than 70% of them.

  • NPI issued2022 · 70% of these records are older, 23% newer
  • In a Medicare fileNo · 15% of these records are
  • In the CMS Doctors and Clinicians fileNo · 18% of these records are
  • Record last updated2023 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

414 registered dietitian records list a practice address in Phoenix

They are 414 of the 31,399 NPPES records with a practice address in Phoenix, and 1,435 registered dietitian records in Arizona. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,435 in Arizona → Every provider in Phoenix → Registered Dietitian nationwide →

The 8 registered dietitian records with the nearest ZIP codes

  1. Silvia Benincaso, RD, CDEPhoenix, AZ 850161639268774
  2. Edith Clark, MBA, RD, CDEPhoenix, AZ 850161376632679
  3. Robert Collison, RD, CDEPhoenix, AZ 850161205917929
  4. Maria Escobar, CSP, RDPhoenix, AZ 850161003063389
  5. Lisa Griefer, RD, CDEPhoenix, AZ 850161114007176
  6. Rachel Head, RD, CDEPhoenix, AZ 850161477875409
  7. Charisse Holiday, RDPhoenix, AZ 850161932271855
  8. Thelma Lucero, RDPhoenix, AZ 850161871827576

Common questions

What is Michael Duffy's NPI number?

Michael Duffy's National Provider Identifier (NPI) is 1073241675, issued on Aug 11, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Michael Duffy located?

The NPPES record lists a practice address at 1919 E Thomas RD, Phoenix, AZ, 85016. Phone: (602) 933-1000. Providers update this record themselves, so call before visiting.

How can I verify Michael Duffy's license?

NPPES lists Arizona license number 86172466, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity 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. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.