Angel Joel Diaz Martinez, MD
NPI 1518510825ActiveIndividual· Dermatology· Stoneham, MA
Dermatology (MD) in Stoneham, Massachusetts, trained at Ponce School of Medicine (class of 2019). Their prescriptions cost Medicare Part D more than their services did: $471,102 for 1,569 claims, against $277,358 paid for services in 2024. E.R. Squibb & Sons, L.L.C. was the largest of 11 companies reporting payments in 2025, $17,031 in all, mostly consulting fees.
Overview
| NPI | 1518510825 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 17, 2019 |
| Last updated in NPPES | Oct 21, 2026 |
| Certified by provider | Oct 21, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 1014073 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Dermatology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 852 |
|---|---|
| Services billed | 4,781 across 48 procedure codes |
| Paid by Medicare | $277,358 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,569 · 1,662 30-day fills |
|---|---|
| Patients | 626 |
| Total drug cost | $471,102 |
| Generic share | 92% of claims |
Education and affiliations
| Medical school | Ponce School of Medicine |
|---|---|
| Graduation year | 2019 |
| Medicare specialty | Dermatology |
| Telehealth | Offers telehealth |
Medical group
- Mystic Valley Dermatology Associates PCSalem, NH · 11 clinicians
Hospital affiliation
- Winchester HospitalWinchester, MA
Industry payments (Open Payments)
- 2025$17,031 · 64 payments from 11 companies
- 2024$907.44 · 32 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| E.R. Squibb & Sons, L.L.C. | $15,950 | 20 |
| Ucb, Inc. | $395.66 | 13 |
| Galderma Laboratories, L.P. | $318.41 | 15 |
| Abbvie Inc. | $90.06 | 4 |
| Lilly USA, LLC | $89.30 | 3 |
What the 2025 payments were for
- Consulting Fee$13,290 · 2 payments
- Food and Beverage$1,916 · 58 payments
- Travel and Lodging$1,825 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Dermatology providers in Stoneham
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