Matilda Sylvia Mason, M.D
NPI 1205141959ActiveIndividual· Internal Medicine· Hackettstown, NJ
Internal Medicine (M.D) with Practice Associates Medical Group, practicing in Hackettstown, New Jersey. 377 Medicare patients in 2024, $91,646 paid; nearly all of their 209 Part D prescriptions were generic (92%). Lists Ahs Hospital Corp and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1205141959 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D |
| Sole proprietor | Yes |
| NPI issued | Aug 18, 2010 |
| Last updated in NPPES | Jul 18, 2025 |
| Certified by provider | Jul 18, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 25MA09712200 | NJ |
| Internal Medicine | 207R00000X | 268687 | NY |
| Student in an Organized Health Care Education/Training Program | 390200000X | — | — |
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 (NJ); Practitioner - Hospitalist (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 377 |
|---|---|
| Services billed | 947 across 11 procedure codes |
| Paid by Medicare | $91,646 |
Part D prescriptions in 2024
| Prescriptions (claims) | 209 · 209 30-day fills |
|---|---|
| Patients | 111 |
| Total drug cost | $9,594 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2002 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Practice Associates Medical GroupSummit, NJ · 1,408 clinicians
Hospital affiliations
- Ahs Hospital CorpHackettstown, NJ
- Morristown Medical CenterMorristown, NJ
- Newton Medical CenterNewton, NJ
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 Hackettstown · All internal medicine physicians in New Jersey