CATHERINE P BENZIGER M.D.
NPI 1518266394
Internal Medicine in Seattle, WA
About Catherine P Benziger M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CATHERINE P BENZIGER M.D. (NPI 1518266394) is an individual internal medicine provider in Seattle, Washington, licensed in Washington (MD60391079) and active in the NPI registry since March 2011. She is enrolled in Medicare PECOS, is affiliated with Essentia Health St Mary's Medical Center, and is a graduate of University Of Minnesota Medical School (2011).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Catherine P Benziger M.d. 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
4Medicare enrollment records show Catherine Benziger reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Remer, MN 56672
- Reassigned Medicare billing, Minnesota enrollment
- Also billed through NPI 1215041199 (Minnesota)
- 171 clinicians in this Medicare group
Grand Rapids, MN 55744
- Reassigned Medicare billing, Minnesota enrollment
- 1,460 clinicians in this Medicare group
Duluth, MN 55805
- Reassigned Medicare billing, Minnesota enrollment
- Medicare enrollment name: St Marys Medical Center
- 179 clinicians in this Medicare group
Superior, WI 54880
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: St Marys Hospital Of Superior
- 381 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 16
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, MNEssentia Health Virginia
Acute Care Hospitals · Virginia, MNSt Marys Hospital Superior
Critical Access Hospitals · Superior, WITamarack Health Ashland Medical Center
Critical Access Hospitals · Ashland, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98104 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SEATTLE, WA 98104
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 Catherine Benziger's NPI number?
The NPI number for Catherine Benziger is 1518266394. It was assigned to this individual provider in the NPPES registry on March 20, 2011. The provider is also known as Catherine A Pastorius M.D..
Where is Catherine Benziger located?
Catherine Benziger practices at 206 3rd Ave S Box 359945, Seattle, WA 98104. The listed phone number is (206) 744-1599.
What is Catherine Benziger's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Catherine Benziger enrolled in Medicare?
Yes. Catherine Benziger 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 Catherine Benziger's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Catherine Benziger reassigns Medicare benefits to 4 organizations: Deer River Healthcare Center, Inc. (Remer, MN), The Duluth Clinic Ltd (Grand Rapids, MN), St. Mary's Medical Center (Duluth, MN) and St. Mary's Hospital Of Superior (Superior, WI). 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 Catherine Benziger's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Catherine Benziger accept?
Health plans from HealthPartners, Sanford Health Plan and Security Health Plan list Catherine Benziger 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 Catherine Benziger affiliated with any hospitals?
According to CMS data, Catherine Benziger is affiliated with Essentia Health St Mary's Medical Center, Essentia Health Duluth, Essentia Health Virginia, St Marys Hospital Superior and Tamarack Health Ashland Medical Center.
When was this NPI record last updated?
The NPPES record for Catherine Benziger was last updated on July 25, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Catherine P Benziger, M.D. · NPI 1518266394
Internal Medicine physician in Seattle, Washington. Individual provider, active in the CMS NPPES registry since March 20, 2011.
## Identity
- **NPI:** 1518266394 (Entity type: Individual)
- **Enumerated:** March 20, 2011
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** MD60391079 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 206 3RD AVE S, BOX 359945, Seattle, WA 98104-2697
- **Phone:** (206) 744-1599
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Deer River Healthcare Center, Inc. (NPI 1659314789, Remer, MN); The Duluth Clinic Ltd (NPI 1184132664, Grand Rapids, MN); St. Mary's Medical Center (NPI 1013933936, Duluth, MN); St. Mary's Hospital Of Superior (NPI 1083657886, Superior, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Minnesota Medical School, class of 2011
## Record status
- **NPPES last updated:** July 25, 2013
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Source: [NPI Profile](https://npiprofile.com/npi/1518266394) · Data from the CMS NPPES public registry.