Dr. William Anthony Frisella Jr., MD

Dr. Frisella practices at St Peters Ambulatory Surgery Center in Saint Peters, Missouri.

Dr. Frisella's NPI, 1851427066, was assigned on February 24, 2007. Dr. Frisella holds Missouri license 2007002737.

Dr. Frisella's primary practice is St Peters Ambulatory Surgery Center, at 114 Piper Hill Dr, Saint Peters, MO 63376 in Saint Charles County. The practice phone is (636) 928-1670.

Dr. Frisella's primary practice is St Peters Ambulatory Surgery Center in Saint Peters, Missouri. Dr. Frisella is also affiliated with Barnes-Jewish St. Peters Hospital. The medical group on file is Advanced Bone & Joint. Dmand AI also links Dr. Frisella to 4 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. Frisella practices, 6 sites in all. Vendor and product names are available with a free account.

Orthopaedic surgery is Dr. Frisella's primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Frisella is licensed in Missouri.

CMS data shows 3,939 Medicare services from Dr. Frisella across 15 procedure codes in 2024, for 361 Medicare patients. Medicare paid $109,243 for them.

CMS counts 361 Medicare patients who saw Dr. Frisella in 2024. The largest group is 65 to 74, with 207 patients. 75% of them have arthritis, and 75% have high cholesterol. 4% are also on Medicaid. Their average risk score is 1.20, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Frisella's median patient age at 65, with 47% women.

In 2024, Dr. Frisella wrote 309 Medicare Part D claims for 182 patients. 96% of them were for generic drugs. CMS names the drug for 272 of them, across 6 drugs with 11 or more claims each, at $1,965 in total drug cost. In 2023, CMS named 213 claims across 6 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 95 out of 100 for Dr. Frisella for performance year 2024, reported as part of a group. Dr. Frisella accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 63 procedures of upper limb (arm) arthroscopy (minimally invasive joint repair) by Dr. Frisella, more than 90% of the clinicians it reports for that procedure.

Hip replacement: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links Dr. Frisella to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Shoulder Fractures and Shoulder Pain.

CMS Open Payments shows 95 general payments to Dr. Frisella from 9 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 82% of the total. Zimmer Biomet Holdings, Inc. paid the most, $52,106.