Dr. Frank Joseph O'Brien, MD

Dr. O'Brien practices at Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health.

Dr. O'Brien's NPI, 1144774266, was assigned on August 5, 2016. Dr. O'Brien holds Missouri license 2017022825.

Dr. O'Brien's primary practice is Barnes-Jewish Hospital, at One Barnes-Jewish Hospital Plaza, Saint Louis, MO 63110 in St. Louis City. The practice phone is (314) 747-3000. Dr. O'Brien also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.

Dr. O'Brien's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. Dr. O'Brien is also affiliated with Missouri Baptist Medical Center. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. O'Brien to 3 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'Brien practices, 6 sites in all. Vendor and product names are available with a free account.

Nephrology is Dr. O'Brien's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. O'Brien is licensed in Missouri.

CMS data shows 237 Medicare services from Dr. O'Brien across 7 procedure codes in 2024, for 165 Medicare patients. Medicare paid $23,744 for them.

CMS counts 165 Medicare patients who saw Dr. O'Brien in 2024. The largest group is 65 to 74, with 67 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 26% are also on Medicaid. Their average risk score is 4.16, 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'Brien's median patient age at 73, with 50% women.

In 2024, Dr. O'Brien wrote 1,165 Medicare Part D claims for 118 patients. 88% of them were for generic drugs. CMS names the drug for 998 of them, across 37 drugs with 11 or more claims each, at $89,967 in total drug cost. In 2023, CMS named 809 claims across 28 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. O'Brien for performance year 2024, reported as part of a group. Dr. O'Brien accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. O'Brien as offering telehealth.

CMS Open Payments shows 15 general payments to Dr. O'Brien from 5 drug and device companies from 2019 to 2025. Consulting fees make up the largest share, 99% of the total. Merck Sharp & Dohme Corporation paid the most, $8,150.