Matthew P. Harrison, MD
NPI 1003263419ActiveIndividual· Internal Medicine, Gastroenterology· Overland Park, KS
Internal Medicine, Gastroenterology (MD) with Gastrointestinal Associates LLC, practicing in Overland Park, Kansas. In 2024 Medicare paid $131,392 for 514 patients, and Part D covered 836 of their prescriptions, 83% of them generic. Abbvie Inc. was the largest of 17 companies reporting payments in 2025, $2,083 in all, mostly food and beverage. Lists Adventhealth Shawnee Mission and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1003263419 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 16, 2016 |
| Last updated in NPPES | Oct 6, 2022 |
| Certified by provider | Oct 6, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 04-46421 | KS |
| Internal Medicine, Gastroenterology | 207RG0100X | 2022037290 | 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 (KS); Practitioner - Gastroenterology (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 514 |
|---|---|
| Services billed | 3,783 across 45 procedure codes |
| Paid by Medicare | $131,392 |
Part D prescriptions in 2024
| Prescriptions (claims) | 836 · 1,429 30-day fills |
|---|---|
| Patients | 457 |
| Total drug cost | $178,136 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Gastroenterology |
Medical group
- Gastrointestinal Associates LLCKansas City, MO · 13 clinicians
Hospital affiliations
- Adventhealth Shawnee MissionShawnee Mission, KS
- Adventhealth South Overland Park, IncOverland Park, KS
- Overland Park Reg Med CtrOverland Park, KS
- St Joseph Medical CenterKansas City, MO
Industry payments (Open Payments)
- 2025$2,083 · 118 payments from 17 companies
- 2024$1,261 · 80 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $485.70 | 40 |
| Takeda Pharmaceuticals U.S.A., Inc. | $347.89 | 17 |
| Janssen Biotech, Inc. | $182.05 | 9 |
| Lilly USA, LLC | $178.27 | 6 |
| Ardelyx, Inc. | $171.18 | 10 |
What the 2025 payments were for
- Food and Beverage$2,083 · 118 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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