DR. SONJA M BJERK MD
NPI 1316012297
Internal Medicine - Pulmonary Disease in Duluth, MN
About Dr. Sonja M Bjerk Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. SONJA M BJERK MD (NPI 1316012297) is an individual pulmonary disease provider in Duluth, Minnesota, licensed in Minnesota (51666) and active in the NPI registry since November 2006. She is enrolled in Medicare PECOS, is affiliated with Essentia Health St Mary's Medical Center, and is a graduate of Other (2005).
NPPES Registry Identity
Specialties & Licenses 3
Other Identifiers 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Sonja M Bjerk Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Sonja Bjerk reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Duluth, MN 55805
- Reassigned Medicare billing, Minnesota enrollment
- 1,460 clinicians in this Medicare group
Grand Rapids, MN 55744
- Reassigned Medicare billing, Minnesota enrollment
- 171 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 9
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Essentia Health St Mary's Medical Center
Acute Care Hospitals · Duluth, MNEssentia Health Duluth
Acute Care Hospitals · Duluth, MNGrand Itasca Clinic And Hospital
Acute Care Hospitals · Grand Rapids, MNEssentia Health Virginia
Acute Care Hospitals · Virginia, MNEssentia Health Deer River
Critical Access Hospitals · Deer River, MNPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 55805 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims 8
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Sonja Bjerk's NPI number?
The NPI number for Sonja Bjerk is 1316012297. It was assigned to this individual provider in the NPPES registry on November 23, 2006.
Where is Sonja Bjerk located?
Sonja Bjerk practices at 400 E 3rd St Essentia Health Duluth Clinic, Duluth, MN 55805. The listed phone number is (218) 786-3993.
What is Sonja Bjerk's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Pulmonary Disease, with taxonomy code 207RP1001X.
Is Sonja Bjerk enrolled in Medicare?
Yes. Sonja Bjerk is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Sonja Bjerk's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Sonja Bjerk reassigns Medicare benefits to 2 organizations: The Duluth Clinic, Ltd (Duluth, MN) and Deer River Healthcare Center, Inc. (Grand Rapids, MN). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Sonja Bjerk's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Sonja Bjerk accept?
Health plans from HealthPartners, Sanford Health Plan and Security Health Plan list Sonja Bjerk as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Sonja Bjerk affiliated with any hospitals?
According to CMS data, Sonja Bjerk is affiliated with Essentia Health St Mary's Medical Center, Essentia Health Duluth, Grand Itasca Clinic And Hospital, Essentia Health Virginia and Essentia Health Deer River.
When was this NPI record last updated?
The NPPES record for Sonja Bjerk was last updated on December 3, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Sonja M Bjerk, MD · NPI 1316012297
Pulmonary Disease physician in Duluth, Minnesota. Individual provider, active in the CMS NPPES registry since November 23, 2006.
## Identity
- **NPI:** 1316012297 (Entity type: Individual)
- **Enumerated:** November 23, 2006
- **Primary specialty:** Internal Medicine - Pulmonary Disease · taxonomy 207RP1001X
- **State license:** 51666 (Minnesota)
- **Sole proprietor:** No
## Practice location
- **Address:** 400 E 3RD ST, ESSENTIA HEALTH DULUTH CLINIC, Duluth, MN 55805-1951
- **Phone:** (218) 786-3993
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): The Duluth Clinic, Ltd (NPI 1245278209, Duluth, MN); Deer River Healthcare Center, Inc. (NPI 1093152423, Grand Rapids, MN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2005
## Record status
- **NPPES last updated:** December 3, 2018
- **Other identifiers:** Medicaid 34993200 (WI); Medicaid 1316012297 (MN)
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Source: [NPI Profile](https://npiprofile.com/npi/1316012297) · Data from the CMS NPPES public registry.