Maria E. Diaz, M.D.
NPI 1023124880ActiveIndividual· Internal Medicine· Lawrence, MA
Internal Medicine (M.D.) with Greater Lawrence Family Health Center Inc, practicing in Lawrence, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $1,192,241 for 8,395 claims, against $3,426 paid for services in 2024. Lists Holy Family Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1023124880 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 22, 2006 |
| Last updated in NPPES | Nov 4, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 227339 | 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 | 66 |
|---|---|
| Services billed | 105 across 8 procedure codes |
| Paid by Medicare | $3,426 |
Part D prescriptions in 2024
| Prescriptions (claims) | 8,395 · 17,211 30-day fills |
|---|---|
| Patients | 451 |
| Total drug cost | $1,192,241 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1999 |
|---|---|
| Medicare specialty | Internal Medicine |
Medical group
- Greater Lawrence Family Health Center IncLawrence, MA · 122 clinicians
Hospital affiliations
- Holy Family HospitalMethuen, MA
- Lahey Hospital & Medical Center, BurlingtonBurlington, MA
- Merrimack Health Lawrence HospitalLawrence, MA
Other facilities
- Braden Home Health Care Services LLCHome health agency · Methuen, MA
- Northeast Rehabilitation HospitalInpatient rehabilitation facility · Salem, NH
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 Lawrence · All internal medicine physicians in Massachusetts