Antonios Mouzakis, MD
NPI 1083267421ActiveIndividual· Internal Medicine· Worcester, MA
Internal Medicine (MD) with Umass Memorial Medical Group Inc, practicing in Worcester, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $506,024 for 6,723 claims, against $60,150 paid for services in 2024. Astellas Pharma US Inc reported $18.07 in payments in 2025, mostly food and beverage. Lists St Vincent Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1083267421 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 23, 2019 |
| Last updated in NPPES | Jul 7, 2022 |
| Certified by provider | Jul 7, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 292415 | 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 - Internal Medicine (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 285 |
|---|---|
| Services billed | 1,194 across 30 procedure codes |
| Paid by Medicare | $60,150 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,723 · 15,535 30-day fills |
|---|---|
| Patients | 696 |
| Total drug cost | $506,024 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Umass Memorial Medical Group IncWorcester, MA · 2,516 clinicians
Hospital affiliations
- St Vincent HospitalWorcester, MA
- Umass Memorial Health - Harrington HospitalSouthbridge, MA
- Umass Memorial Healthalliance HospitalsLeominster, MA
- Umass Memorial Medical Center/University CampusWorcester, MA
Other facilities
- Vna Care NetworkHome health agency · Worcester, MA
Industry payments (Open Payments)
- 2025$18.07 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astellas Pharma US Inc | $18.07 | 1 |
What the 2025 payments were for
- Food and Beverage$18.07 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 471 internal medicine physicians in Worcester · All internal medicine physicians in Massachusetts