Mario F. Flores, MD
NPI 1437103439ActiveIndividual· Internal Medicine· Southborough, MA
Internal Medicine (MD) with Charles River Medical Associates, PC, practicing in Southborough, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $380,082 for 3,636 claims, against $74,687 paid for services in 2024. Globus Medical, Inc. was the largest of 3 companies reporting payments in 2025, $80.87 in all, mostly food and beverage. Lists Marlborough Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1437103439 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 22, 2006 |
| Last updated in NPPES | Feb 4, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 151100 | 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 | 113 |
|---|---|
| Services billed | 1,294 across 40 procedure codes |
| Paid by Medicare | $74,687 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,636 · 8,380 30-day fills |
|---|---|
| Patients | 228 |
| Total drug cost | $380,082 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1992 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Charles River Medical Associates, PCHudson, MA · 119 clinicians
Hospital affiliations
- Marlborough HospitalMarlborough, MA
- Metrowest Medical CenterFramingham, MA
- Umass Memorial Medical Center/University CampusWorcester, MA
Other facilities
- Metrowest Homecare and Hospice, An Amedisys CompanyHome health agency · Marlborough, MA
- Preferred Transitions Home Health Care IncHome health agency · Milford, MA
Industry payments (Open Payments)
- 2025$80.87 · 3 payments from 3 companies
- 2024$87.47 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Globus Medical, Inc. | $33.24 | 1 |
| Sanofi Pasteur Inc. | $29.13 | 1 |
| Astrazeneca Pharmaceuticals LP | $18.50 | 1 |
What the 2025 payments were for
- Food and Beverage$80.87 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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