NPPES file of Aug 9, 2026

Medical Oncology Physician in Missouri

156 NPPES records list medical oncology physician with a practice address in Missouri, 2.5 per 100,000 residents, the 8th highest rate of 51. Saint Louis and Kansas City have the most; each record links to the provider's NPI and the Missouri license search. Page 4 of 4.

CMS NPPES registry, file of Aug 9, 2026; 2023 Census estimates · NUCC 207RX0202X · method

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

Saint Louis has the most, 110

  1. Saint Louis110
  2. Kansas City7
  3. Cape Girardeau5
  4. Florissant5
  5. Springfield4

Medical Oncology Physician records in Missouri

  1. John Welch, MDSaint Louis, MO 631101730202029
  2. Tanya Wildes, MDSaint Peters, MO 633761659592152
  3. Zhifu Xiang, MDFlorissant, MO 630311255666301
  4. Jesse Zaretsky, MD PHDSaint Louis, MO 631081760042089
  5. Steven Zenisek, M.D.Wildwood, MO 630051932191087
  6. Alice Zhou, MD PHDSaint Louis, MO 631101881049187

Source: CMS NPPES, primary taxonomy 207RX0202X: records by practice city and the list of records, file of Aug 9, 2026.

Missouri ranks 8 of 51 per resident

  1. Minnesota2.8
  2. Connecticut2.7
  3. Oregon2.5
  4. Missouri2.5
  5. Florida2.5
  6. Vermont2.5
  7. 50 states and D.C.1.7

Source: CMS NPPES, primary taxonomy 207RX0202X by practice state, file of Aug 9, 2026; records per 100,000 residents, 2023 Census estimates.

91.7% of these records appear in a Medicare file, against 81.8% 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. Missouri91.7%
  2. United States81.8%

Medical Oncology Physician records in Missouri, measured

  • In a Medicare file143 of 156 · 91.7% here, 81.8% nationally
  • In the CMS Doctors and Clinicians file127 · 81.4% here, 72.5% nationally
  • Not updated in five years or more36 · 23.1% here, 49.3% nationally
  • Median graduation year2003 · the 127 records with a school on file

Source: CMS NPPES, file of Aug 9, 2026 (primary taxonomy 207RX0202X); 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 medical oncology physician (207RX0202X) as their primary taxonomy with a practice address in Missouri: 2.5 per 100,000 residents against 1.7 nationally (50 states and D.C.). Saint Louis has 110 of them (71%).

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. Minnesota159
  2. Ohio169
  3. New Jersey140
  4. Michigan177

States with a similar rate per 100,000

  1. Oregon2.5
  2. Florida2.5
  3. Vermont2.5
  4. Washington2.3

The largest states

  1. Florida561
  2. New York548
  3. Texas547
  4. California447
  5. Massachusetts421

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.