MARY KATHRYN STARK RN, MS, FNP, DNP
NPI 1871629055
Nurse Practitioner - Family in Eugene, OR
About Mary Kathryn Stark Rn, Ms, Fnp, Dnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARY KATHRYN STARK RN, MS, FNP, DNP (NPI 1871629055) is an individual family provider in Eugene, Oregon, licensed in Oregon (200750019NP) and active in the NPI registry since February 2007. She is enrolled in Medicare PECOS and is a graduate of Other (2006).
NPPES Registry Identity
Specialties & Licenses 2
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
Mary Kathryn Stark Rn, Ms, Fnp, Dnp 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 Mary Stark reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Ontario, OR 97914
- Reassigned Medicare billing, Oregon enrollment
- 5 clinicians in this Medicare group
Yuba City, CA 95991
- Reassigned Medicare billing, California enrollment
- 146 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 97403 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 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
EUGENE, OR 97403
EUGENE, OR 97403
EUGENE, OR 97403
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 Mary Stark's NPI number?
The NPI number for Mary Stark is 1871629055. It was assigned to this individual provider in the NPPES registry on February 24, 2007. The provider is also known as Mary Kathryn Derieg Rn, Ms, Fnp, Dnp.
Where is Mary Stark located?
Mary Stark practices at 3579 Franklin Blvd, Eugene, OR 97403. The listed phone number is (541) 344-9411.
What is Mary Stark's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Family, with taxonomy code 363LF0000X.
Is Mary Stark enrolled in Medicare?
Yes. Mary Stark 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 Mary Stark's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Stark reassigns Medicare benefits to 2 organizations: Stark Medical Group PC (Ontario, OR) and Planned Parenthood Mar Monte, Inc (Yuba City, CA). 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 Mary Stark's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Mary Stark accept?
Health plans from Moda Health Plan, Inc. and Select Health list Mary Stark 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.
When was this NPI record last updated?
The NPPES record for Mary Stark was last updated on June 10, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months 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.
# Mary Kathryn Stark, RN, MS, FNP, DNP · NPI 1871629055
Family physician in Eugene, Oregon. Individual provider, active in the CMS NPPES registry since February 24, 2007.
## Identity
- **NPI:** 1871629055 (Entity type: Individual)
- **Enumerated:** February 24, 2007
- **Primary specialty:** Nurse Practitioner - Family · taxonomy 363LF0000X
- **State license:** 200750019NP (Oregon)
- **Sole proprietor:** No
## Practice location
- **Address:** 3579 FRANKLIN BLVD, Eugene, OR 97403-2356
- **Phone:** (541) 344-9411
## 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): Stark Medical Group PC (NPI 1063754208, Ontario, OR); Planned Parenthood Mar Monte, Inc (NPI 1427922871, Yuba City, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2006
## Record status
- **NPPES last updated:** June 10, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1871629055) · Data from the CMS NPPES public registry.