Kassandra Williams, PA-C

Kassandra Williams practices at Mercy Hospital South in Saint Louis, Missouri, part of Mercy.

Kassandra Williams' NPI, 1699495770, was assigned on August 30, 2022. Kassandra Williams holds Missouri license 2022039976.

Kassandra Williams' primary practice is Mercy Hospital South, at 10010 Kennerly Road, Saint Louis, MO 63128 in St. Louis County. The practice phone is (314) 525-1000.

Kassandra Williams' primary practice is Mercy Hospital South in Saint Louis, Missouri, part of Mercy. Kassandra Williams is also affiliated with Mercy Hospital St. Louis. The medical group on file is Mercy Clinic Electrophysiology, Mercy Heart Hospital St. Louis. Dmand AI also links Kassandra Williams to 1 more hospital 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 Kassandra Williams practices, 4 sites in all. Vendor and product names are available with a free account.

Physician assistant is Kassandra Williams' primary specialty in the NPI Registry, under taxonomy code 363A00000X. Kassandra Williams is licensed in Missouri.

CMS counts 178 Medicare patients who saw Kassandra Williams in 2024. The largest group is 75 to 84, with 71 patients. 75% of them have atrial fibrillation, and 75% have high blood pressure. 14% are also on Medicaid. Their average risk score is 2.47, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Kassandra Williams' median patient age at 74, with 45% women.

In 2024, Kassandra Williams wrote 683 Medicare Part D claims for 229 patients. 63% of them were for generic drugs.

Kassandra Williams accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

CMS Open Payments shows 12 general payments to Kassandra Williams from 7 drug and device companies in 2025. Food and beverage make up the largest share, 69% of the total. Medtronic, Inc. paid the most, $434.