Donald Alan Weimer, M.D.
NPI 1932152980ActiveIndividual· Orthopaedic Surgery· O Fallon, IL
Orthopaedic Surgery (M.D.) in O Fallon, Illinois, trained at Medical College of Wisconsin (class of 1988). 284 Medicare patients in 2024, $166,048 paid; nearly all of their 184 Part D prescriptions were generic (98%). Shoulder Innovations, Inc. was the largest of 9 companies reporting payments in 2025, $5,845 in all, mostly travel and lodging.
Overview
| NPI | 1932152980 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | May 19, 2006 |
| Last updated in NPPES | Aug 20, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Orthopaedic Surgery Primary | 207X00000X | 036101574 | IL |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Orthopedic Surgery (IL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 284 |
|---|---|
| Services billed | 1,807 across 57 procedure codes |
| Paid by Medicare | $166,048 |
Part D prescriptions in 2024
| Prescriptions (claims) | 184 · 186 30-day fills |
|---|---|
| Patients | 81 |
| Total drug cost | $3,573 |
| Generic share | 98% of claims |
Education and affiliations
| Medical school | Medical College of Wisconsin |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Orthopedic Surgery |
Medical group
- Hshs Medical Group IncO Fallon, IL · 219 clinicians
Hospital affiliations
- Hshs St Elizabeth's HospitalO Fallon, IL
- Sparta Community HospitalSparta, IL
- St Josephs HospitalBreese, IL
Other facilities
- Hshs Home Care IllinoisHome health agency · Effingham, IL
- Ssm Health Rehabilitation HospitalInpatient rehabilitation facility · Richmond Heights, MO
Industry payments (Open Payments)
- 2025$5,845 · 35 payments from 9 companies
- 2024$1,186 · 12 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Shoulder Innovations, Inc. | $2,719 | 6 |
| Arthrex, Inc. | $1,546 | 15 |
| Encore Medical, LP | $683.31 | 3 |
| Stryker Corporation | $382.95 | 3 |
| Elite Orthopedics, LLC | $328.58 | 4 |
What the 2025 payments were for
- Travel and Lodging$3,925 · 13 payments
- Food and Beverage$1,897 · 21 payments
- Gift$23.85 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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