Dr. Reuben Dempsey Johnson, MD

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

Dr. Johnson's NPI, 1174563217, was assigned on June 7, 2006. Dr. Johnson graduated from Howard University College of Medicine in 2002. Dr. Johnson holds Missouri license 2013043104.

Dr. Johnson'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. Johnson also practices at Barnes-Jewish Hospital, 1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110.

Dr. Johnson's primary practice is Barnes-Jewish Hospital in Saint Louis, Missouri, part of BJC Health. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Johnson to 1 more group practice or clinic, named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 2 sites in all. Vendor and product names are available with a free account.

Emergency medicine is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Johnson is licensed in Missouri.

CMS data shows 309 Medicare services from Dr. Johnson across 5 procedure codes in 2024, for 236 Medicare patients. Medicare paid $25,867 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 236 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 81 patients. 75% of them have high blood pressure, and 66% have high cholesterol. 34% are also on Medicaid. Their average risk score is 2.35, 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. Johnson's median patient age at 67, with 52% women.

In 2024, Dr. Johnson wrote 76 Medicare Part D claims for 50 patients. 88% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $205 in total drug cost. In 2018, CMS named 13 claims across 1 drug.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Johnson for performance year 2024, reported as part of a group.

Dmand AI links 22 papers to Dr. Johnson, published from 2008 to 2025. 2011 was the busiest year, with 5. The most frequent topics are Neuroendoscopy, Neurosurgical Procedures and Brain Neoplasms. Dr. Johnson has published most often in J Clin Neurosci. Dr. Johnson's most frequent co-author is Steven Derek Mills, MD.

CMS Open Payments shows 3 general payments to Dr. Johnson from 2 drug and device companies from 2016 to 2023. Food and beverage make up the largest share, 100% of the total. Aero US Inc paid the most, $97.

Dr. Johnson graduated from Howard University College of Medicine in 2002.