Matthew Y. Siu, MD
NPI 1467441816ActiveIndividual· Family Medicine· Malden, MA
Family Medicine (MD) with Hallmark Health Medical Associates Inc, practicing in Malden, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $655,658 for 6,886 claims, against $54,972 paid for services in 2024. Hologic Sales and Service, LLC reported $24.99 in payments in 2025, mostly food and beverage. Lists Melrosewakefield Healthcare and 1 other hospital as hospital affiliations.
Overview
| NPI | 1467441816 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 18, 2005 |
| Last updated in NPPES | Feb 24, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 78886 | 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 - Family Practice (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 188 |
|---|---|
| Services billed | 747 across 21 procedure codes |
| Paid by Medicare | $54,972 |
Part D prescriptions in 2024
| Prescriptions (claims) | 6,886 · 15,889 30-day fills |
|---|---|
| Patients | 460 |
| Total drug cost | $655,658 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1972 |
|---|---|
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Hallmark Health Medical Associates IncMelrose, MA · 147 clinicians
Hospital affiliations
- Melrosewakefield HealthcareMelrose, MA
- Tufts Medical CenterBoston, MA
Other facilities
- All Care Vna-Greater Lynn IncHome health agency · Lynn, MA
- Mass General Brigham Home Care, IncHome health agency · Newton, MA
- Tufts Medicine Care at HomeHome health agency · Lowell, MA
Industry payments (Open Payments)
- 2025$24.99 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Hologic Sales and Service, LLC | $24.99 | 1 |
What the 2025 payments were for
- Food and Beverage$24.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 62 family medicine physicians in Malden · All family medicine physicians in Massachusetts