Robert Walker, M.D.
NPI 1396727129ActiveIndividual· Internal Medicine, Gastroenterology· Middletown, NY
Internal Medicine, Gastroenterology (M.D.) in Middletown, New York, trained at New York Medical College (class of 1989). Their prescriptions cost Medicare Part D more than their services did: $476,872 for 510 claims, against $38,885 paid for services in 2024. Stryker Corporation reported $576.59 in payments in 2025, mostly travel and lodging.
Overview
| NPI | 1396727129 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 17, 2005 |
| Last updated in NPPES | Nov 14, 2024 |
| Certified by provider | Nov 14, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | 199345 | NY |
| Internal Medicine, Gastroenterology | 207RG0100X | 66475 | AZ |
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 - Gastroenterology (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 371 |
|---|---|
| Services billed | 518 across 28 procedure codes |
| Paid by Medicare | $38,885 |
Part D prescriptions in 2024
| Prescriptions (claims) | 510 · 963 30-day fills |
|---|---|
| Patients | 303 |
| Total drug cost | $476,872 |
| Generic share | 77% of claims |
Education and affiliations
| Medical school | New York Medical College |
|---|---|
| Graduation year | 1989 |
| Medicare specialty | Gastroenterology |
Medical group
- Honorhealth AmbulatoryScottsdale, AZ · 630 clinicians
Hospital affiliations
- Honorhealth Scottsdale Osborn Medical CenterScottsdale, AZ
- Honorhealth Scottsdale Shea Medical CenterScottsdale, AZ
Industry payments (Open Payments)
- 2025$576.59 · 1 payment from 1 company
- 2024$27.57 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $576.59 | 1 |
What the 2025 payments were for
- Travel and Lodging$576.59 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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