NPPES file of Aug 9, 2026

Preston Harris, PHD, RDN

Registered Dietitian · Sahuarita, AZ

Preston Harris, PHD, RDN is a registered dietitian with a practice address in Sahuarita, Arizona, and NPI 1164105102, issued on Aug 8, 2023. Check the license (Arizona 86358244, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1164105102
Name
Preston Harris
Credential
PHD, RDN
Primary taxonomy
Registered Dietitian 133V00000X
License number
86358244 AZ
Self-reported in NPPES; status is on the state search
Practice location
719 W Calle Coroza, Sahuarita, AZ 85629
Phone
(520) 784-8134
Enumerated
Aug 8, 2023
Record last updated
Aug 8, 2023
Medicare enrollment
Enrolled (PECOS I20240814003137); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. 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 →

Verify Preston Harris 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 86358244    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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Bills Medicare through one group practice

  1. Duke Nutrition Experts LLCOro Valley, AZ

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Preston Harris among 1,435 registered dietitian records in Arizona

Preston Harris, PHD, RDN 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. Its NPI, issued in 2023, is newer than 77% of them.

  • NPI issued2023 · 77% of these records are older, 18% newer
  • In a Medicare fileYes · 15% of these records are
  • In the CMS Doctors and Clinicians fileYes · 18% of these records are
  • Graduated2021 · median 2018 among the 257 with a school on file
  • 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).

Registered Dietitian providers in Arizona

There are 1,435 registered dietitian records in Arizona.

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

The 8 registered dietitian records with the nearest ZIP codes

  1. Alyssa Katz, RDSells, AZ 856341225726474
  2. Stephanie Bradshaw, REGISTERED DIETICIANSierra Vista, AZ 856351891273041
  3. James Glaser, R.D.Sierra Vista, AZ 856351801032206
  4. Julie Henderson, R.D.Sierra Vista, AZ 856351013095967
  5. Chelsey Housley, RDSierra Vista, AZ 856351467954594
  6. Tahera Islam, RDSierra Vista, AZ 856351265747687
  7. Anna Keefe, R.D.Sierra Vista, AZ 856351033153515
  8. Kirsten Mellott, RDNSierra Vista, AZ 856351891368452

Common questions

What is Preston Harris, PHD, RDN's NPI number?

Preston Harris, PHD, RDN's National Provider Identifier (NPI) is 1164105102, issued on Aug 8, 2023. An NPI identifies a provider in billing; it is not a license.

Where is Preston Harris, PHD, RDN located?

The NPPES record lists a practice address at 719 W Calle Coroza, Sahuarita, AZ, 85629. Phone: (520) 784-8134. Providers update this record themselves, so call before visiting.

How can I verify Preston Harris, PHD, RDN's license?

NPPES lists Arizona license number 86358244, 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. Medicare files from data.cms.gov. 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.