Dan S. Nguyen, M.D.
NPI 1235198334ActiveIndividual· Family Medicine· N Chelmsford, MA
Family Medicine (M.D.) in N Chelmsford, Massachusetts, trained at University of Massachusetts Medical School (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $463,340 for 7,959 claims, against $109,883 paid for services in 2024. Abbott Laboratories was the largest of 3 companies reporting payments in 2025, $234.68 in all, mostly food and beverage.
Overview
| NPI | 1235198334 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 20, 2006 |
| Last updated in NPPES | May 15, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 209069 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 346 |
|---|---|
| Services billed | 1,654 across 52 procedure codes |
| Paid by Medicare | $109,883 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,959 · 16,021 30-day fills |
|---|---|
| Patients | 596 |
| Total drug cost | $463,340 |
| Generic share | 90% of claims |
Education and affiliations
| Medical school | University of Massachusetts Medical School |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Family Practice |
| Telehealth | Offers telehealth |
Medical group
- Chelmsford Family Practice, PCNorth Chelmsford, MA · 11 clinicians
Hospital affiliations
- Lowell General HospitalLowell, MA
- Northeast Hospital CorporationBeverly, MA
Other facilities
- Amedisys Home Health CareHome health agency · Wakefield, MA
- Pathways HealthcareHome health agency · Westwood, MA
- Tufts Medicine Care at HomeHome health agency · Lowell, MA
Industry payments (Open Payments)
- 2025$234.68 · 3 payments from 3 companies
- 2024$99.83 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $192.05 | 1 |
| Alkermes, Inc. | $24.07 | 1 |
| Bayer Healthcare Pharmaceuticals Inc. | $18.56 | 1 |
What the 2025 payments were for
- Food and Beverage$234.68 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Family Medicine providers in N Chelmsford
- 1346209442
- 1013976117