Doctor profile · Federal record

Dr. Donald Thorsen

Occupational Therapist (CMS: Occupational Therapist in Private Practice) · O Fallon, MO

  • NPI 1770930463
  • Accepts Medicare
  • MIPS 92.8 / 100 · 2023
  • 10 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
951 Waterbury Falls Dr
O Fallon, MO 633682202
(636) 336-0297
Mailing address
600 Oakmont Ln, Ste 600C
Westmont, IL 605595548

Credentials & registration

NPPES · NUCC
NPI registered
May 2016 — 10 yrs on file
Profile last updated
July 14, 2020
Year of graduation
2016 — 10 yrs since
Specialty taxonomy
225X00000X — NUCC code
State license (1)
Illinois #2016017355

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1770930463. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
909
Distinct HCPCS
4
Medicare allowed
$24,000
HCPCS Description Services Patients Avg allowed
97530 Therapy procedure using functional activities 335 23 $31
97112 Therapy procedure to re-educate brain-to-nerve-to-muscle function, each 15 minutes 249 23 $25
97110 Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility, each 15 minutes 198 28 $23
97140 Therapy procedure using manual technique, each 15 minutes 127 16 $21

In context: peer comparison

Among 1 peers in this city , average services per provider: 227. This provider delivers 4.0× the peer median.

Frequently asked questions

Auto-generated from federal data
What is Dr. Donald Thorsen's medical specialty?
Dr. Donald Thorsen practices Occupational Therapist in O Fallon, MO.
Where does Dr. Donald Thorsen practice?
Dr. Donald Thorsen practices at 951 Waterbury Falls Dr, O Fallon, MO 633682202. Office phone: 6363360297.
What is Dr. Donald Thorsen's NPI?
Dr. Donald Thorsen's National Provider Identifier (NPI) is 1770930463, issued by NPPES.
Does Dr. Donald Thorsen accept Medicare assignment?
Yes. Dr. Donald Thorsen accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Donald Thorsen commonly perform?
Top Medicare-reported procedures in 2023: Therapy procedure using functional activities (HCPCS 97530); Therapy procedure to re-educate brain-to-nerve-to-muscle function (HCPCS 97112); Therapy procedure using exercise to develop strength, endurance, range of motion, and flexibility (HCPCS 97110). Source: CMS Medicare Physician & Other Practitioners file.