NPPES file of Aug 9, 2026

Steven O. Hiaasen, M.D.

Radiation Oncology Physician · Sun City, AZ

Steven O. Hiaasen, M.D. is a radiation oncology physician with a practice address in Sun City, Arizona, and NPI 1558368241, issued on Jul 7, 2005. Check the license (Arizona 18654, as entered in NPPES) on the Arizona Medical Board; 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
1558368241
Name
Steven O. Hiaasen
Credential
M.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
18654 AZ
Self-reported in NPPES; status is on the state search
Practice location
13184 N 103RD Dr, Sun City, AZ 85351
Phone
(623) 972-2902
Enumerated
Jul 7, 2005
Record last updated
Sep 26, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(623) 972-2539
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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Also registered at 13184 N 103RD Dr

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

  1. Lucia Clover, M.D.Radiation Oncology Physician1821095530
  2. Thomas Runyon, M.D.Radiation Oncology Physician1457358152

Verify Steven O. Hiaasen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersArizona Medical Board
    Search for license 18654
    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 Arizona license search

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Radiation Oncology Physician providers in Arizona

There are 156 radiation oncology physician records in Arizona. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

Other radiation oncology physician records in Arizona

  1. Safia Ahmed, MDScottsdale, AZ1548609910
  2. Ashley AlbertPeoria, AZ1346668514
  3. Aaron Ambrad, MDScottsdale, AZ1265411961
  4. Hayden Ansinelli, MDTucson, AZ1821592791
  5. Jonathan Ashman, MDScottsdale, AZ1659337566
  6. Igor Barani, MDPhoenix, AZ1811105943
  7. Dolores Basden, M.D.Tucson, AZ1356310023
  8. David Beyer, MDSedona, AZ1114992252
  9. Ronik BhangooMesa, AZ1760877393
  10. Christopher Biggs, MDPhoenix, AZ1720042146

Common questions

What is Steven O. Hiaasen, M.D.'s NPI number?

Steven O. Hiaasen, M.D.'s National Provider Identifier (NPI) is 1558368241, issued on Jul 7, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Steven O. Hiaasen, M.D. located?

The NPPES record lists a practice address at 13184 N 103RD Dr, Sun City, AZ, 85351. Phone: (623) 972-2902. Providers update this record themselves, so call before visiting.

How can I verify Steven O. Hiaasen, M.D.'s license?

NPPES lists Arizona license number 18654, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.

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.