Erik P. Thyssen, MD
NPI 1750495099ActiveIndividual· Internal Medicine, Gastroenterology· Creve Coeur, MO
Internal Medicine, Gastroenterology (MD) with Digestive Health Specialists LLC, practicing in Creve Coeur, Missouri. Their prescriptions cost Medicare Part D more than their services did: $872,378 for 1,900 claims, against $352,158 paid for services in 2024. Abbvie Inc. was the largest of 10 companies reporting payments in 2025, $1,288 in all, mostly food and beverage. Lists Barnes Jewish Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1750495099 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 17, 2006 |
| Last updated in NPPES | Mar 8, 2021 |
| Certified by provider | Mar 8, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | MDR3P63 | MO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 681 |
|---|---|
| Services billed | 13,317 across 51 procedure codes |
| Paid by Medicare | $352,158 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,900 · 2,610 30-day fills |
|---|---|
| Patients | 764 |
| Total drug cost | $872,378 |
| Generic share | 75% of claims |
Education and affiliations
| Graduation year | 1984 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Digestive Health Specialists LLCOverland Park, KS · 69 clinicians
Hospital affiliations
- Barnes Jewish HospitalSaint Louis, MO
- Barnes-Jewish West County HospitalCreve Coeur, MO
- Missouri Baptist Medical CenterSaint Louis, MO
- Northwestern Medicine Central Dupage HospitalWinfield, IL
Industry payments (Open Payments)
- 2025$1,288 · 54 payments from 10 companies
- 2024$1,973 · 90 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $555.93 | 28 |
| Janssen Biotech, Inc. | $372.90 | 10 |
| Genzyme Corporation | $88.22 | 3 |
| Lilly USA, LLC | $74.99 | 3 |
| Regeneron Healthcare Solutions, Inc. | $53.56 | 2 |
What the 2025 payments were for
- Food and Beverage$1,204 · 53 payments
- Education$84.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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