Timothy R. O'Leary, M.D.
Radiation Oncology Physician · Festus, MO
Timothy R. O'Leary, M.D. is a radiation oncology physician with a practice address in Festus, Missouri, and NPI 1700992294, issued on Aug 21, 2006. Check the license (Missouri 102187, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Timothy R. O'Leary
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 102187 MO
036095208 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1350 US Highway 61, Festus, MO 63028
- Phone
- (636) 933-0303
- Enumerated
- Aug 21, 2006
- Record last updated
- Jun 21, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (636) 933-0293
- Medicaid ID
- 204995302 MO
- Medicare enrollment
- Enrolled (PECOS I20100524000080); accepts Medicare assignment
- Medical or professional school
- Loyola University Of Chicago, Stritch School Of Medicine, 1989
- Entity
- Type 1 · individual
Also registered at 1350 US Highway 61
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bhaskara Gadi, M.D.Hematology & Oncology Physician1821057365
- Syed Hasan, MDMedical Oncology Physician1285086868
- Craig Siegel, MDHematology & Oncology Physician1295812733
Verify Timothy R. O'Leary in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license 102187Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
36% more Medicare Part D claims than the average radiation oncology physician in 2024
182 Medicare Part D claims for 80 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Tamsulosin Hcl62 claims
- Sucralfate30 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 73 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- West County Radiological Group IncFestus, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Radiation Oncology Physician providers in Missouri
There are 136 radiation oncology physician records in Missouri.
Other radiation oncology physician records in Missouri
- Amy Abdalla, MDSaint Louis, MO1932959954
- Ibrahim Abdalla, M.D.Springfield, MO1437154630
- Mohamed Abdelhakiem, MDColumbia, MO1073017216
- Michael Albritton, MDSpringfield, MO1548264971
- James Allen, MDJefferson City, MO1659369858
- Anthony Apicelli, MDSaint Louis, MO1457589681
- Shahed Badiyan, MDSaint Louis, MO1285967141
- Kathy Baglan, M.D.Saint Louis, MO1538122163
- Morgan Barrett, M.D., MPHWest Plains, MO1154397891
- Joseph Bean, M.D.Hannibal, MO1881682177
Common questions
What is Timothy R. O'Leary, M.D.'s NPI number?
Timothy R. O'Leary, M.D.'s National Provider Identifier (NPI) is 1700992294, issued on Aug 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Timothy R. O'Leary, M.D. located?
The NPPES record lists a practice address at 1350 US Highway 61, Festus, MO, 63028. Phone: (636) 933-0303. Providers update this record themselves, so call before visiting.
How can I verify Timothy R. O'Leary, M.D.'s license?
NPPES lists Missouri license number 102187, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Timothy R. O'Leary, M.D. prescribe under Medicare Part D?
In 2024, Timothy R. O'Leary, M.D. had 182 Medicare Part D claims for 80 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Timothy R. O'Leary, M.D.'s MIPS final score?
The 2023 MIPS final score is 73 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.