Dr. Jonas Marschall, MD

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

Dr. Marschall's NPI, 1609074558, was assigned on July 3, 2007. Dr. Marschall holds Missouri license 2009023138.

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

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

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Marschall practices, 3 sites in all. Vendor and product names are available with a free account.

Infectious disease is Dr. Marschall's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Marschall is licensed in Missouri.

CMS data shows 91 Medicare services from Dr. Marschall across 3 procedure codes in 2023, for 23 Medicare patients. Medicare paid $7,812 for them. Every service was in a facility, such as a hospital, rather than an office.

CMS counts 23 Medicare patients who saw Dr. Marschall in 2024. 75% of them have high blood pressure, and 75% have high cholesterol. Their average risk score is 3.10, 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. Marschall's median patient age at 58, with 45% women.

In 2024, Dr. Marschall wrote 65 Medicare Part D claims for 17 patients. 88% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $64 in total drug cost. In 2023, CMS named 13 claims across 1 drug.

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

CMS Open Payments shows 4 general payments to Dr. Marschall from 2 drug and device companies from 2024 to 2025. Consulting fees make up the largest share, 95% of the total. Pfizer Inc. paid the most, $4,271.