Gregory Baker
NPI 1255726667ActiveIndividual· Internal Medicine· Boston, MA
Internal Medicine with Christiana Care Health Services Inc and 1 other group, practicing in Boston, Massachusetts. In 2024 Medicare paid $308,867 for 2,350 patients, and Part D covered 749 of their prescriptions, 81% of them generic. Kestra Medical Technology Services, Inc. was the largest of 2 companies reporting payments in 2025, $40.34 in all, mostly food and beverage. Lists Christiana Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1255726667 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | Yes |
| NPI issued | Apr 2, 2015 |
| Last updated in NPPES | Jun 5, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 274252 | MA |
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 - Cardiovascular Disease (Cardiology) (DE) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 2,350 |
|---|---|
| Services billed | 3,988 across 51 procedure codes |
| Paid by Medicare | $308,867 |
Part D prescriptions in 2024
| Prescriptions (claims) | 749 · 1,719 30-day fills |
|---|---|
| Patients | 164 |
| Total drug cost | $156,953 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Interventional Cardiology |
Medical groups
- Christiana Care Health Services IncNewark, DE · 1,483 clinicians
- Cardiology Physicians, LLCNewark, DE · 49 clinicians
Hospital affiliations
- Christiana HospitalNewark, DE
- Hospital of Univ of PennsylvaniaPhiladelphia, PA
- Union Hospital of Cecil CountyElkton, MD
Industry payments (Open Payments)
- 2025$40.34 · 2 payments from 2 companies
- 2024$20.59 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Kestra Medical Technology Services, Inc. | $24.52 | 1 |
| Siemens Medical Solutions USA, Inc. | $15.82 | 1 |
What the 2025 payments were for
- Food and Beverage$40.34 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 2,375 internal medicine physicians in Boston · All internal medicine physicians in Massachusetts