Patrick Leong, DO
NPI 1447237003ActiveIndividual· Internal Medicine· Somerville, MA
Internal Medicine (DO) with Massachusetts General Physicians Organization Inc, practicing in Somerville, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $102,149 for 839 claims, against $57,520 paid for services in 2024. Lists Brigham and Women's Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1447237003 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Dec 27, 2005 |
| Last updated in NPPES | Aug 2, 2023 |
| Certified by provider | Aug 2, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 151924 | MA |
| Family Medicine | 207Q00000X | 7813 | NH |
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 - Family Practice (MA); Practitioner - General Practice (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 156 |
|---|---|
| Services billed | 745 across 34 procedure codes |
| Paid by Medicare | $57,520 |
Part D prescriptions in 2024
| Prescriptions (claims) | 839 · 1,916 30-day fills |
|---|---|
| Patients | 169 |
| Total drug cost | $102,149 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1983 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Massachusetts General Physicians Organization IncBoston, MA · 3,558 clinicians
Hospital affiliations
- Brigham and Women's HospitalBoston, MA
- Massachusetts Eye and Ear Infirmary -Boston, MA
- Massachusetts General HospitalBoston, MA
- North Shore Medical Center -Salem, MA
Other facilities
- Mass General Brigham Home Care, IncHome health agency · Newton, MA
- Spaulding Rehabilitation HospitalInpatient rehabilitation facility · Charlestown, 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 39 internal medicine physicians in Somerville · All internal medicine physicians in Massachusetts