Ken Matsuo, MD
NPI 1053600429ActiveIndividual· Internal Medicine· Waterbury, CT
Internal Medicine (MD) with Galen Inpatient Physicians PC, practicing in Waterbury, Connecticut. In 2024 Medicare paid $29,230 for 184 patients, and Part D covered 85 of their prescriptions, 81% of them generic. Pfizer Inc. reported $16.98 in payments in 2025, mostly food and beverage. Lists Griffin Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1053600429 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Apr 6, 2011 |
| Last updated in NPPES | Aug 18, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 53316 | CT |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
| Hospitalist | 208M00000X | 53316 | CT |
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 - Hospitalist (CT) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 184 |
|---|---|
| Services billed | 269 across 14 procedure codes |
| Paid by Medicare | $29,230 |
Part D prescriptions in 2024
| Prescriptions (claims) | 85 · 120 30-day fills |
|---|---|
| Patients | 35 |
| Total drug cost | $9,980 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Hospitalist |
Medical group
- Galen Inpatient Physicians PCHanford, CA · 1,077 clinicians
Hospital affiliations
- Griffin HospitalDerby, CT
- Saint Mary's HospitalWaterbury, CT
Industry payments (Open Payments)
- 2025$16.98 · 1 payment from 1 company
- 2024$190.51 · 9 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Pfizer Inc. | $16.98 | 1 |
What the 2025 payments were for
- Food and Beverage$16.98 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 134 internal medicine physicians in Waterbury · All internal medicine physicians in Connecticut