James Van Siatras, D.O.
NPI 1164672572ActiveIndividual· Surgery· Olympia Fields, IL
Surgery (D.O.) in Olympia Fields, Illinois, trained at Chicago College of Osteopathy (class of 2006). 56 Medicare patients in 2024, $16,995 paid; all of their 55 Part D prescriptions were generic. Intuitive Surgical, Inc. was the largest of 3 companies reporting payments in 2025, $4,837 in all, mostly education.
Overview
| NPI | 1164672572 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | No |
| NPI issued | Sep 22, 2008 |
| Last updated in NPPES | Sep 22, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Surgery Primary | 208600000X | 125050873 | 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 - General Surgery (IN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 56 |
|---|---|
| Services billed | 101 across 26 procedure codes |
| Paid by Medicare | $16,995 |
Part D prescriptions in 2024
| Prescriptions (claims) | 55 · 67 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $904.31 |
| Generic share | 100% of claims |
Education and affiliations
| Medical school | Chicago College of Osteopathy |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | General Surgery |
Medical group
- Indiana Surgical Associates PCCrown Point, IN · 16 clinicians
Hospital affiliation
- Methodist Hospitals IncGary, IN
Industry payments (Open Payments)
- 2025$4,837 · 11 payments from 3 companies
- 2024$305.79 · 10 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $4,804 | 9 |
| Merck Sharp & Dohme LLC | $19.02 | 1 |
| Abbvie Inc. | $13.85 | 1 |
What the 2025 payments were for
- Education$4,000 · 1 payment
- Travel and Lodging$464.30 · 2 payments
- Food and Beverage$372.44 · 8 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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