Dr. Timothy R. O'Leary, MD

Dr. O'Leary practices at Mercy Hospital Jefferson in Festus, Missouri.

Dr. O'Leary's NPI, 1700992294, was assigned on August 21, 2006. Dr. O'Leary graduated from Loyola University of Chicago, Stritch School of Medicine in 1989. Dr. O'Leary holds Missouri license 102187.

Dr. O'Leary's primary practice is Mercy Hospital Jefferson, at 1400 Us-61, Festus, MO 63028 in Jefferson County. The practice phone is (636) 933-1000.

Dr. O'Leary's primary practice is Mercy Hospital Jefferson in Festus, Missouri. Dr. O'Leary is also affiliated with Mercy Hospital Jefferson. The medical group on file is West County Radiological Group. Dmand AI also links Dr. O'Leary to 4 more hospitals and 1 group practice or clinic, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. O'Leary practices, 6 sites in all. Vendor and product names are available with a free account.

Radiation oncology is Dr. O'Leary's primary specialty in the NPI Registry, under taxonomy code 2085R0001X. Dmand AI has Dr. O'Leary's licenses on file in 2 states: Missouri and Illinois.

CMS data shows 1,536 Medicare services from Dr. O'Leary across 14 procedure codes in 2024, for 278 Medicare patients. Medicare paid $94,412 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 278 Medicare patients who saw Dr. O'Leary in 2024. The largest group is 65 to 74, with 118 patients. 75% of them have cancer, and 75% have high blood pressure. 13% are also on Medicaid. Their average risk score is 1.58, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. O'Leary's median patient age at 75, with 39% women.

In 2024, Dr. O'Leary wrote 182 Medicare Part D claims for 80 patients. 88% of them were for generic drugs. CMS names the drug for 92 of them, across 2 drugs with 11 or more claims each, at $1,807 in total drug cost. In 2023, CMS named 104 claims across 5 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 85 out of 100 for Dr. O'Leary for performance year 2024, reported as part of a group. Dr. O'Leary accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Dmand AI links 6 papers to Dr. O'Leary, published from 2012 to 2025. 2022 was the busiest year, with 2. The most frequent topics are Cell Membrane and Heparitin Sulfate.

CMS Open Payments shows 3 general payments to Dr. O'Leary from 2 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Novocure Inc. paid the most, $111.

Dr. O'Leary graduated from Loyola University of Chicago, Stritch School of Medicine in 1989.