Margaret L. Chen, MD
NPI 1578678272ActiveIndividual· Internal Medicine· Duluth, MN
Internal Medicine (MD) with The Duluth Clinic Ltd and 1 other group, practicing in Duluth, Minnesota. In 2024 Medicare paid $86,892 for 214 patients, and Part D covered 461 of their prescriptions, 89% of them generic. Lists Essentia Health Duluth and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1578678272 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 20, 2006 |
| Last updated in NPPES | Jul 2, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 62371 | MN |
| Internal Medicine, Nephrology | 207RN0300X | 1578678272 | MN |
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 - Hospitalist (MN); Practitioner - Internal Medicine (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 214 |
|---|---|
| Services billed | 953 across 17 procedure codes |
| Paid by Medicare | $86,892 |
Part D prescriptions in 2024
| Prescriptions (claims) | 461 · 493 30-day fills |
|---|---|
| Patients | 161 |
| Total drug cost | $18,740 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2003 |
|---|---|
| Medicare specialty | Hospitalist |
| Secondary specialties | Internal Medicine |
Medical groups
- The Duluth Clinic LtdHermantown, MN · 1,144 clinicians
- St Josephs Medical CenterBrainerd, MN · 237 clinicians
Hospital affiliations
- Essentia Health DuluthDuluth, MN
- Essentia Health St Joseph's Medical CenterBrainerd, MN
- Essentia Health St Mary's Medical CenterDuluth, MN
- Essentia Health St Marys - Detroit LakesDetroit Lakes, MN
- Essentia Health VirginiaVirginia, MN
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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