Frank Chau, M.D.
NPI 1003840315ActiveIndividual· Internal Medicine· Southborough, MA
Internal Medicine (M.D.) in Southborough, Massachusetts, trained at New York University School of Medicine (class of 1997). Their prescriptions cost Medicare Part D more than their services did: $417,849 for 5,321 claims, against $79,886 paid for services in 2024.
Overview
| NPI | 1003840315 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 10, 2006 |
| Last updated in NPPES | Jan 27, 2011 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 203693 | 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 - Internal Medicine (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 326 |
|---|---|
| Services billed | 1,945 across 103 procedure codes |
| Paid by Medicare | $79,886 |
Part D prescriptions in 2024
| Prescriptions (claims) | 5,321 · 12,508 30-day fills |
|---|---|
| Patients | 566 |
| Total drug cost | $417,849 |
| Generic share | 91% of claims |
Education and affiliations
| Medical school | New York University School of Medicine |
|---|---|
| Graduation year | 1997 |
| Medicare specialty | Internal Medicine |
Medical group
- Reliant Medical Group IncWorcesteer, MA · 640 clinicians
Hospital affiliations
- Marlborough HospitalMarlborough, MA
- Metrowest Medical CenterFramingham, MA
- Milford Regional Medical CenterMilford, MA
- St Vincent HospitalWorcester, MA
- Umass Memorial Medical Center/University CampusWorcester, MA
Other facilities
- CaretendersHome health agency · Needham Heights, MA
- Vna Care NetworkHome health agency · Worcester, MA
- Spaulding Rehabilitation HospitalInpatient rehabilitation facility · Charlestown, MA
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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