Daniel R. Massarelli, M.D.
NPI 1467435131ActiveIndividual· Internal Medicine· Worcester, MA
Internal Medicine (M.D.) in Worcester, Massachusetts, trained at University of Massachusetts Medical School (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $428,068 for 7,811 claims, against $81,411 paid for services in 2024.
Overview
| NPI | 1467435131 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 27, 2005 |
| Last updated in NPPES | Nov 4, 2020 |
| Certified by provider | Nov 4, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 58480 | 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 | 495 |
|---|---|
| Services billed | 1,432 across 30 procedure codes |
| Paid by Medicare | $81,411 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,811 · 19,748 30-day fills |
|---|---|
| Patients | 793 |
| Total drug cost | $428,068 |
| Generic share | 93% of claims |
Education and affiliations
| Medical school | University of Massachusetts Medical School |
|---|---|
| Graduation year | 1984 |
| 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
- Bayada Home Health Care, IncHome health agency · Canton, MA
- CaretendersHome health agency · Needham Heights, MA
- Pathways HealthcareHome health agency · Westwood, MA
- Vna and Hospice of Greater MilfordHome health agency · Milford, MA
- Vna Care NetworkHome health agency · Worcester, MA
- Jhc HospiceHospice · Worcester, MA
- Vna Care Hospice IncHospice · Worcester, MA
Industry payments (Open Payments)
None reported for 2025 or 2024.
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