NPPES file of Aug 9, 2026

Richard F. Diaz, MD

Radiation Oncology Physician · Edina, MN

Richard F. Diaz, MD is a radiation oncology physician with a practice address in Edina, Minnesota, and NPI 1831190412, issued on Aug 9, 2005. Check the license (Minnesota 30803, as entered in NPPES) on the Minnesota Board of Medical Practice; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1831190412
Name
Richard F. Diaz
Credential
MD
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
30803 MN
Self-reported in NPPES; status is on the state search
Practice location
6401 France Ave S, Edina, MN 55435
Phone
(952) 920-8477
Enumerated
Aug 9, 2005
Record last updated
Nov 28, 2023
Fax
(952) 920-8176
Medicaid IDs
522585000 MN
30814700 MN
Medicare enrollment
Enrolled (PECOS I20071024000559); accepts Medicare assignment
Medical or professional school
Mayo Medical School, 1980
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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Also registered at 6401 France Ave S

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

  1. Karen Abdo, CRNACertified Registered Nurse Anesthetist1902851942
  2. Assunta Abraham, M.D.Surgery Physician1467613315
  3. Cathy AllenRegistered Dietitian1194783977
  4. Andrew Anderson, D.O.Anesthesiology Physician1376886580
  5. Zachary Anderson, D.O.Hospitalist Physician1689992174
  6. Laureen Arbes, MA, OTR/LOccupational Therapist1902811599

Verify Richard F. Diaz in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMinnesota Board of Medical Practice
    Search for license 30803
    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
Open the Minnesota 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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81% fewer Medicare Part D claims than the average radiation oncology physician in 2024

25 Medicare Part D claims for 17 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Richard Diaz25
  2. Specialty average134

Most prescribed

  1. Lidocaine Hcl Viscous13 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.

Bills Medicare through one group practice

  1. Minneapolis Radiation Oncology PAShakopee, MN

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

Richard F. Diaz among 160 radiation oncology physician records in Minnesota

Richard F. Diaz, MD is one of 160 radiation oncology physician records with a practice address in Minnesota. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 84% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated1980 · median 2011 among the 119 with a school on file
  • Record last updated2023 · 39% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Minnesota practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in Minnesota

There are 160 radiation oncology physician records in Minnesota.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Hunter Gits, MDEdina, MN 554351578069464
  2. Gregory Meyers, M.D.Edina, MN 554351295759009
  3. Daniel Wattson, MDEdina, MN 554351386872547
  4. Linda Wilmarth, MDEdina, MN 554351700870961
  5. Douglas Olson, MDEdina, MN 554341740272210
  6. Duncan Dickson, MDCoon Rapids, MN 554331508858309
  7. Robert Gao, MDCoon Rapids, MN 554331245893122
  8. John Kosiak, MNCoon Rapids, MN 554331033101886

Common questions

What is Richard F. Diaz, MD's NPI number?

Richard F. Diaz, MD's National Provider Identifier (NPI) is 1831190412, issued on Aug 9, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Richard F. Diaz, MD located?

The NPPES record lists a practice address at 6401 France Ave S, Edina, MN, 55435. Phone: (952) 920-8477. Providers update this record themselves, so call before visiting.

How can I verify Richard F. Diaz, MD's license?

NPPES lists Minnesota license number 30803, as entered by the provider. Search the Minnesota Board of Medical Practice at https://mn.gov/boards/medical-practice/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Richard F. Diaz, MD prescribe under Medicare Part D?

In 2024, Richard F. Diaz, MD had 25 Medicare Part D claims for 17 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.