MRS. SHELLIE MARTHINI ARNP
NPI 1790313419
Nurse Practitioner - Gerontology in Richland, WA
About Mrs. Shellie Marthini Arnp NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MRS. SHELLIE MARTHINI ARNP (NPI 1790313419) is an individual gerontology provider in Richland, Washington, licensed in Washington (AP61059985) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS, is affiliated with Yakima Valley Memorial, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Locations 2
Other Identifiers 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
Mrs. Shellie Marthini Arnp 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
3Medicare enrollment records show Shellie Marthini reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Prosser, WA 99350
- Reassigned Medicare billing, Washington enrollment
- 132 clinicians in this Medicare group
Yakima, WA 98901
- Reassigned Medicare billing, Washington enrollment
- 44 clinicians in this Medicare group
Selah, WA 98942
- Reassigned Medicare billing, Washington enrollment
- 7 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.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Yakima Valley Memorial
Acute Care Hospitals · Yakima, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 99352 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 3
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 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
RICHLAND, WA 99352
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 Shellie Marthini's NPI number?
The NPI number for Shellie Marthini is 1790313419. It was assigned to this individual provider in the NPPES registry on March 29, 2020.
Where is Shellie Marthini located?
Shellie Marthini practices at 560 Gage Blvd Ste 102, Richland, WA 99352. The listed phone number is (509) 942-3135.
What is Shellie Marthini's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Gerontology, with taxonomy code 363LG0600X.
Is Shellie Marthini enrolled in Medicare?
Yes. Shellie Marthini 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 Shellie Marthini's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Shellie Marthini reassigns Medicare benefits to 3 organizations: Sunnyside Community Hospital Association (Prosser, WA), Yakima Neighborhood Health Services (Yakima, WA) and Thuthi Enterprises, LLC (Selah, WA). 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 Shellie Marthini's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Shellie Marthini accept?
Health plans from Ambetter Health, Premera Blue Cross Blue Shield of Alaska and Providence Health Plan list Shellie Marthini 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 Shellie Marthini affiliated with any hospitals?
According to CMS data, Shellie Marthini is affiliated with Yakima Valley Memorial.
When was this NPI record last updated?
The NPPES record for Shellie Marthini was last updated on November 13, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.
# Mrs. Shellie Marthini, ARNP · NPI 1790313419
Gerontology physician in Richland, Washington. Individual provider, active in the CMS NPPES registry since March 29, 2020.
## Identity
- **NPI:** 1790313419 (Entity type: Individual)
- **Enumerated:** March 29, 2020
- **Primary specialty:** Nurse Practitioner - Gerontology · taxonomy 363LG0600X
- **State license:** AP61059985 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 560 GAGE BLVD STE 102, Richland, WA 99352-9531
- **Phone:** (509) 942-3135 · **Fax:** (509) 627-1188
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Sunnyside Community Hospital Association (NPI 1912305905, Prosser, WA); Yakima Neighborhood Health Services (NPI 1750985727, Yakima, WA); Thuthi Enterprises, LLC (NPI 1851919476, Selah, WA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** November 13, 2024
- **Other identifiers:** Other 169.940-00 (WA)
---
Source: [NPI Profile](https://npiprofile.com/npi/1790313419) · Data from the CMS NPPES public registry.