NPPES file of Aug 9, 2026

Irma Herrera-Olson, RD

Registered Dietitian · Phoenix, AZ

Irma Herrera-Olson, RD is a registered dietitian with a practice address in Phoenix, Arizona, and NPI 1356668107, issued on May 3, 2010. Check the license 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
1356668107
Name
Irma Herrera-Olson
Credential
RD
Primary taxonomy
Registered Dietitian 133V00000X
Practice location
635 East Baseline Road, Phoenix, AZ 85042
Phone
(602) 243-7277
Enumerated
May 3, 2010
Record last updated
Dec 21, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(602) 243-1235
Medicaid ID
523347 AZ
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 635 East Baseline Road

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

  1. Mohammad Ahmad, M.D.Obstetrics & Gynecology Physician1417055526
  2. Laverne Alfred-Allen, RDHDental Hygienist1588949770
  3. Carmen Arocho-Vera, M.D.Family Medicine Physician1134108624
  4. Daniel Brower, R.PH.Pharmacist1366503245
  5. Donald Carter, M.D.Pediatrics Physician1104887082
  6. Alexa Diaz, RDRegistered Dietitian1922376193

Verify Irma Herrera-Olson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this professionCheck 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

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Irma Herrera-Olson among 1,435 registered dietitian records in Arizona

Irma Herrera-Olson, RD 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 2010, is newer than 18% of them.

  • NPI issued2010 · 18% of these records are older, 79% newer
  • In a Medicare fileNo · 15% of these records are
  • In the CMS Doctors and Clinicians fileNo · 18% of these records are
  • Record last updated2011 · 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. Jennie Altman, RDPhoenix, AZ 850421003267485
  2. Vesna Babanovska, MS RDNPhoenix, AZ 850421376065904
  3. Julie Bickline, RDPhoenix, AZ 850421881015006
  4. Natasha BurrellPhoenix, AZ 850421962045112
  5. Robert Carter, MS, RDPhoenix, AZ 850421700351475
  6. Emily Cervantez, RDNPhoenix, AZ 850421659825610
  7. Manyil Dashe, MS, RDPhoenix, AZ 850421841821642
  8. Alexa Diaz, RDPhoenix, AZ 850421922376193

Common questions

What is Irma Herrera-Olson, RD's NPI number?

Irma Herrera-Olson, RD's National Provider Identifier (NPI) is 1356668107, issued on May 3, 2010. An NPI identifies a provider in billing; it is not a license.

Where is Irma Herrera-Olson, RD located?

The NPPES record lists a practice address at 635 East Baseline Road, Phoenix, AZ, 85042. Phone: (602) 243-7277. Providers update this record themselves, so call before visiting.

How can I verify Irma Herrera-Olson, RD's license?

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.