Mark T. Welch, MD
NPI 1164561619ActiveIndividual· Internal Medicine· Kalispell, MT
Internal Medicine (MD) in Kalispell, Montana, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1989). In 2024 Medicare paid $23,325 for 515 patients, and Part D covered 71 of their prescriptions, 85% of them generic. Boehringer Ingelheim Pharmaceuticals, Inc. reported $17.27 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1164561619 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 5, 2007 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Jun 26, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 8817 | MT |
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 - Internal Medicine (MT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 515 |
|---|---|
| Services billed | 832 across 10 procedure codes |
| Paid by Medicare | $23,325 |
Part D prescriptions in 2024
| Prescriptions (claims) | 71 · 73 30-day fills |
|---|---|
| Patients | 27 |
| Total drug cost | $13,978 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Internal Medicine |
Medical groups
- Kalispell Regional Medical Center IncKalispell, MT · 421 clinicians
- St Johns Lutheran Hospital IncLibby, MT · 34 clinicians
Hospital affiliations
- Cabinet Peaks Medical CenterLibby, MT
- Logan Health - WhitefishWhitefish, MT
- Logan Health Medical CenterKalispell, MT
Industry payments (Open Payments)
- 2025$17.27 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $17.27 | 1 |
What the 2025 payments were for
- Food and Beverage$17.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 32 internal medicine physicians in Kalispell · All internal medicine physicians in Montana