Arthur G. Walczyk, MD
NPI 1003800723ActiveIndividual· Internal Medicine, Gastroenterology· Poughkeepsie, NY
Internal Medicine, Gastroenterology (MD) with Northern Medical Group, PLLC, practicing in Poughkeepsie, New York. Their prescriptions cost Medicare Part D more than their services did: $435,660 for 560 claims, against $114,737 paid for services in 2024. Intercept Pharmaceuticals, Inc. was the largest of 10 companies reporting payments in 2025, $752.27 in all, mostly food and beverage. Lists Sharon Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1003800723 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 8, 2005 |
| Last updated in NPPES | Jul 21, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 174866 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 441 |
|---|---|
| Services billed | 905 across 45 procedure codes |
| Paid by Medicare | $114,737 |
Part D prescriptions in 2024
| Prescriptions (claims) | 560 · 753 30-day fills |
|---|---|
| Patients | 257 |
| Total drug cost | $435,660 |
| Generic share | 82% of claims |
Education and affiliations
| Graduation year | 1985 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Northern Medical Group, PLLCBrewster, NY · 38 clinicians
Hospital affiliations
- Sharon HospitalSharon, CT
- Vassar Brothers Medical CenterPoughkeepsie, NY
Industry payments (Open Payments)
- 2025$752.27 · 37 payments from 10 companies
- 2024$533.56 · 24 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intercept Pharmaceuticals, Inc. | $191.69 | 9 |
| Pfizer Inc. | $153.80 | 11 |
| Genzyme Corporation | $119.71 | 4 |
| Abbvie Inc. | $118.68 | 6 |
| Phathom Pharmaceuticals, Inc. | $39.79 | 2 |
What the 2025 payments were for
- Food and Beverage$752.27 · 37 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Gastroenterology providers in Poughkeepsie
- 1467492884
- 1053495507
- 1336605385
- 1912253691
- 1811991508
- 1346244027
- 1023002748
- 1326042011
- 1477535797
- 1932193653
- 1497922553
- 1477547198
All Internal Medicine, Gastroenterology providers in New York →