Joan Helene Mathews, MD
NPI 1942294855ActiveIndividual· Pediatrics· Cambridge, MA
Opted out of Medicare from July 2016 to July 2028. Pediatrics (MD) in Cambridge, Massachusetts, licensed in MA, with an NPI issued in September 2005. Part D covered 11 prescriptions written in 2024. Phathom Pharmaceuticals, Inc. reported $124.99 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1942294855 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 7, 2005 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Pediatrics Primary | 208000000X | 41038 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Opt-out | Opted out Jul 28, 2016 – Jul 28, 2028 |
| Can order and refer | Yes |
During an opt-out period the provider sees Medicare patients only under private contracts, and Medicare does not pay claims for their services.
Part D prescriptions in 2024
| Prescriptions (claims) | 11 · 27 30-day fills |
|---|---|
| Total drug cost | $100.67 |
Industry payments (Open Payments)
- 2025$124.99 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Phathom Pharmaceuticals, Inc. | $124.99 | 1 |
What the 2025 payments were for
- Food and Beverage$124.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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