Dr. Michael Hiroshi Johnson, MD

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

Dr. Johnson's NPI, 1770710469, was assigned on June 19, 2009. Dr. Johnson graduated from University of Washington School of Medicine in 2009. Dr. Johnson holds Missouri license 2022027490.

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. Dr. Johnson is also affiliated with Missouri Baptist Medical Center. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Johnson to 3 more hospitals, each named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Johnson practices, 5 sites in all. Vendor and product names are available with a free account.

Urology is Dr. Johnson's primary specialty in the NPI Registry, under taxonomy code 208800000X. Dr. Johnson is licensed in Missouri.

CMS data shows 816 Medicare services from Dr. Johnson across 20 procedure codes in 2024, for 450 Medicare patients. Medicare paid $64,798 for them.

CMS counts 450 Medicare patients who saw Dr. Johnson in 2024. The largest group is 65 to 74, with 210 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 13% are also on Medicaid. Their average risk score is 1.87, 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 70, with 21% women.

In 2024, Dr. Johnson wrote 350 Medicare Part D claims for 124 patients. 90% of them were for generic drugs. CMS names the drug for 269 of them, across 8 drugs with 11 or more claims each, at $7,948 in total drug cost. In 2023, CMS named 112 claims across 4 drugs.

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. Dr. Johnson accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Johnson as offering telehealth. CMS counts 21 procedures of prostate resection by Dr. Johnson, more than 83% of the clinicians it reports for that procedure.

Dmand AI links 212 papers to Dr. Johnson, published from 2010 to 2025. 2017 was the busiest year, with 18. The most frequent topics are Air Pollution, Indoor, Cooking and Kidney Neoplasms. Dr. Johnson has published most often in J Urol. Dr. Johnson's most frequent co-authors are Mohamad E. Allaf, MD, William Neville Checkley, MD, PhD and Michael A. Gorin.

CMS Open Payments shows 214 general payments to Dr. Johnson from 28 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 58% of the total. Merck Sharp & Dohme Corporation paid the most, $90,301.

Dr. Johnson graduated from University of Washington School of Medicine in 2009.