NPPES file of Aug 9, 2026

Radiation Oncology Physician in Arizona

156 NPPES records list radiation oncology physician with a practice address in Arizona, 2.1 per 100,000 residents, the 23rd highest rate of 51. Scottsdale and Phoenix have the most; each record links to the provider's NPI and the Arizona license search. Page 4 of 4.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 2085R0001X · method

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

Scottsdale has the most, 35

  1. Scottsdale35
  2. Phoenix33
  3. Tucson31
  4. Gilbert11
  5. Glendale6

Radiation Oncology Physician records in Arizona

  1. Charles Woo, MDChandler, AZ 852241811961543
  2. Fan Yang, M.D.Scottsdale, AZ 852591831874965
  3. Farley Yang, MDScottsdale, AZ 852581821052069
  4. Nathan Yu, M.D.Phoenix, AZ 850541962864157
  5. Sara Zakem, M.D.Tempe, AZ 852841134582158
  6. Chi Zhang, M.D.Scottsdale, AZ 852591902124936

Source: CMS NPPES, primary taxonomy 2085R0001X: records by practice city and the list of records, file of Aug 9, 2026.

Arizona ranks 23 of 51 per resident

  1. Vermont2.2
  2. North Carolina2.1
  3. Montana2.1
  4. Arizona2.1
  5. West Virginia2.1
  6. Iowa2.1
  7. 50 states and D.C.2.1

Source: CMS NPPES, primary taxonomy 2085R0001X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

84.0% of these records appear in a Medicare file, against 82.3% nationally

A Medicare file here is Part D prescribing (2024), a MIPS score (2023), an Open Payments record (2024) or Medicare group billing (CMS Doctors and Clinicians). A record outside them may still see patients: these files cover Medicare only.

  1. Arizona84.0%
  2. United States82.3%

Radiation Oncology Physician records in Arizona, measured

  • In a Medicare file131 of 156 · 84.0% here, 82.3% nationally
  • In the CMS Doctors and Clinicians file115 · 73.7% here, 74.0% nationally
  • Not updated in five years or more71 · 45.5% here, 54.6% nationally
  • Median graduation year2003 · the 115 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 2085R0001X); CMS Medicare Part D Prescribers 2024, MIPS 2023, Open Payments 2024 and Doctors and Clinicians, matched by NPI.

What the count covers

156 NPPES records list radiation oncology physician (2085R0001X) as their primary taxonomy with a practice address in Arizona: 2.1 per 100,000 residents against 2.1 nationally (50 states and D.C.). Scottsdale has 35 of them (22%).

A record is a registration a provider made and keeps up to date: it shows neither that the provider is licensed nor that they still practice there. The state's own license search is the check.

States with a similar number

  1. New Jersey153
  2. Wisconsin153
  3. Minnesota160
  4. Virginia137

States with a similar rate per 100,000

  1. West Virginia2.1
  2. Iowa2.1
  3. Montana2.1
  4. North Carolina2.1

The largest states

  1. California735
  2. Florida520
  3. New York449
  4. Texas449
  5. Pennsylvania383

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy; 2023 Census population estimates. A registry record 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.