Sonja M. Bjerk, MD
NPI 1316012297ActiveIndividual· Internal Medicine, Pulmonary Disease· Duluth, MN
Internal Medicine, Pulmonary Disease (MD) with The Duluth Clinic Ltd, practicing in Duluth, Minnesota. Their prescriptions cost Medicare Part D more than their services did: $345,751 for 1,386 claims, against $33,128 paid for services in 2024. Lists Essentia Health Deer River and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1316012297 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Nov 23, 2006 |
| Last updated in NPPES | Dec 3, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 51666 | MN |
| Internal Medicine | 207R00000X | 51666 | MN |
| Internal Medicine | 207R00000X | 50108 | WI |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 51666 | MN |
| Internal Medicine, Critical Care Medicine | 207RC0200X | 50108-20 | WI |
| Internal Medicine, Pulmonary Disease | 207RP1001X | 50108-20 | WI |
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 - Pulmonary Disease (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 150 |
|---|---|
| Services billed | 460 across 31 procedure codes |
| Paid by Medicare | $33,128 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,386 · 2,001 30-day fills |
|---|---|
| Patients | 159 |
| Total drug cost | $345,751 |
| Generic share | 58% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
| Telehealth | Offers telehealth |
Medical group
- The Duluth Clinic LtdHermantown, MN · 1,144 clinicians
Hospital affiliations
- Essentia Health Deer RiverDeer River, MN
- Essentia Health DuluthDuluth, MN
- Essentia Health St Mary's Medical CenterDuluth, MN
- Essentia Health VirginiaVirginia, MN
- Grand Itasca Clinic and HospitalGrand Rapids, 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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