Dr. Marissa Morningstar J. Tenenbaum, MD

Dr. Tenenbaum practices at Washington University School of Medicine in Saint Louis, Missouri.

Dr. Tenenbaum's NPI, 1124232236, was assigned on May 9, 2007. Dr. Tenenbaum graduated from University of Wisconsin School of Medicine in 1998. Dr. Tenenbaum holds Missouri license 2008029868.

Dr. Tenenbaum's primary practice is Washington University School of Medicine, at 1040 N Mason Rd, Saint Louis, MO 63141 in Saint Louis County. The practice phone is (314) 362-4964.

Dr. Tenenbaum's primary practice is Washington University School of Medicine in Saint Louis, Missouri. Dr. Tenenbaum is also affiliated with Barnes-Jewish Hospital. The medical group on file is WashU Medicine Psychiatry. Dmand AI also links Dr. Tenenbaum to 2 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. Tenenbaum practices, 4 sites in all. Vendor and product names are available with a free account.

Plastic and reconstructive surgery is Dr. Tenenbaum's primary specialty in the NPI Registry, under taxonomy code 2086S0122X. Dr. Tenenbaum is board certified in plastic surgery by the American Board of Plastic Surgery. Dr. Tenenbaum is licensed in Missouri.

CMS data shows 16 Medicare services from Dr. Tenenbaum across 1 procedure code in 2024, all of them office visits, for 34 Medicare patients. Medicare paid $605 for them. Every service was in an office.

CMS counts 34 Medicare patients who saw Dr. Tenenbaum in 2024. 75% of them have cancer, and 68% have high cholesterol. Their average risk score is 0.97, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Tenenbaum's median patient age at 51, with 93% women.

In 2024, Dr. Tenenbaum wrote 112 Medicare Part D claims for 23 patients. 99% of them were for generic drugs. CMS names the drug for 89 of them, across 6 drugs with 11 or more claims each, at $848 in total drug cost. In 2023, CMS named 81 claims across 5 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Tenenbaum for performance year 2024, reported as part of a group. Dr. Tenenbaum accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 18 procedures of mastectomy by Dr. Tenenbaum, more than 76% of the clinicians it reports for that procedure.

Melanoma (skin cancer) excision: 1 to 10 procedures (CMS shows small counts as a range)

CMS Open Payments shows 148 general payments to Dr. Tenenbaum from 20 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 50% of the total. Allergan Inc. paid the most, $41,796.

Dr. Tenenbaum graduated from University of Wisconsin School of Medicine in 1998.