Hassna Atlassi, MD
NPI 1326107541ActiveIndividual· 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: $117,734 for 1,627 claims, against $47,466 paid for services in 2024. Novo Nordisk Inc was the largest of 5 companies reporting payments in 2025, $110.77 in all, mostly food and beverage. Lists Marlborough Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1326107541 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Dec 6, 2006 |
| Last updated in NPPES | Oct 27, 2026 |
| Certified by provider | Oct 27, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 211085 | 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 | 89 |
|---|---|
| Services billed | 717 across 29 procedure codes |
| Paid by Medicare | $47,466 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,627 · 3,973 30-day fills |
|---|---|
| Patients | 163 |
| Total drug cost | $117,734 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1994 |
|---|---|
| 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
Industry payments (Open Payments)
- 2025$110.77 · 6 payments from 5 companies
- 2024$106.80 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $34.27 | 2 |
| Pfizer Inc. | $22.98 | 1 |
| Sanofi Pasteur Inc. | $19.23 | 1 |
| Merck Sharp & Dohme LLC | $19.12 | 1 |
| Exact Sciences Corporation | $15.17 | 1 |
What the 2025 payments were for
- Food and Beverage$110.77 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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