ALESSA L LOPEZ-CASTOR FNP-C
NPI 1285661744
Nurse Practitioner in Tulalip, WA
About Alessa L Lopez-castor Fnp-c NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALESSA L LOPEZ-CASTOR FNP-C (NPI 1285661744) is an individual nurse practitioner in Tulalip, Washington, licensed in Washington (AP60420859) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS, is affiliated with Providence Regional Medical Center Everett, and is a graduate of Other (2004).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
Alessa L Lopez-castor Fnp-c 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
9Medicare enrollment records show Alessa Lopez-castor reassigns Medicare billing to 9 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Tulalip, WA 98271
- Reassigned Medicare billing, Washington enrollment
- 7 clinicians in this Medicare group
Marysville, WA 98271
- Reassigned Medicare billing, Washington enrollment
- 705 clinicians in this Medicare group
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 135 clinicians in this Medicare group
Everett, WA 98201
- Reassigned Medicare billing, Washington enrollment
- 1,285 clinicians in this Medicare group
Bothell, WA 98021
- Reassigned Medicare billing, Washington enrollment
- 1,074 clinicians in this Medicare group
Edmonds, WA 98026
- Reassigned Medicare billing, Washington enrollment
- 106 clinicians in this Medicare group
Tacoma, WA 98402
- Reassigned Medicare billing, Washington enrollment
- 120 clinicians in this Medicare group
Selah, WA 98942
- Reassigned Medicare billing, Washington enrollment
- 132 clinicians in this Medicare group
Portland, OR 97204
- Reassigned Medicare billing, Ohio, Oregon and Washington enrollments
- 162 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
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Providence Regional Medical Center Everett
Acute Care Hospitals · Everett, WAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 98271 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 8
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
TULALIP, WA 98271
TULALIP, WA 98271
TULALIP, WA 98271
TULALIP, WA 98271
TULALIP, WA 98271
TULALIP, WA 98271
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 Alessa Lopez-castor's NPI number?
The NPI number for Alessa Lopez-castor is 1285661744. It was assigned to this individual provider in the NPPES registry on June 28, 2006.
Where is Alessa Lopez-castor located?
Alessa Lopez-castor practices at 6330 31st Ave NE Ste 101, Tulalip, WA 98271. The listed phone number is (360) 716-2200.
What is Alessa Lopez-castor's specialty?
The primary specialty registered for this NPI is Nurse Practitioner with taxonomy code 363L00000X.
Is Alessa Lopez-castor enrolled in Medicare?
Yes. Alessa Lopez-castor 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 Alessa Lopez-castor's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alessa Lopez-castor reassigns Medicare benefits to 9 organizations: Tulalip Tribes Of Washington Quil Ceda Creek Counseling (Tulalip, WA), Providence Health & Services - Washington (Marysville, WA), Providence Health & Services-Wa (Everett, WA), Optum Care Washington PLLC (Everett, WA), King County Public Hospital District No 2 (Bothell, WA) and 4 more organizations, listed in the Medicare section above. 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 Alessa Lopez-castor's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alessa Lopez-castor accept?
Health plans from Ambetter Health, Anthem Blue Cross and Blue Shield, BridgeSpan Health Company, CareSource and Molina Healthcare and 4 other insurers list Alessa Lopez-castor 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 Alessa Lopez-castor affiliated with any hospitals?
According to CMS data, Alessa Lopez-castor is affiliated with Providence Regional Medical Center Everett.
When was this NPI record last updated?
The NPPES record for Alessa Lopez-castor was last updated on July 18, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Alessa L Lopez-Castor, FNP-C · NPI 1285661744
Nurse Practitioner physician in Tulalip, Washington. Individual provider, active in the CMS NPPES registry since June 28, 2006.
## Identity
- **NPI:** 1285661744 (Entity type: Individual)
- **Enumerated:** June 28, 2006
- **Primary specialty:** Nurse Practitioner · taxonomy 363L00000X
- **State license:** AP60420859 (Washington)
- **Sole proprietor:** No
## Practice location
- **Address:** 6330 31ST AVE NE STE 101, Tulalip, WA 98271-7423
- **Phone:** (360) 716-2200 · **Fax:** (360) 716-2211
## 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:** 9 organizations under Medicare reassignment (form CMS-855R): Tulalip Tribes Of Washington Quil Ceda Creek Counseling (NPI 1578272712, Tulalip, WA); Providence Health & Services - Washington (NPI 1063663458, Marysville, WA); Providence Health & Services-Wa (NPI 1033360144, Everett, WA); Optum Care Washington PLLC (NPI 1831186766, Everett, WA); King County Public Hospital District No 2 (NPI 1902907165, Bothell, WA); and 4 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2004
## Record status
- **NPPES last updated:** July 18, 2023
- **Other identifiers:** Other NPWF1 (ID); Medicaid 80693310 (ID); Other 000010152176 (ID); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1285661744) · Data from the CMS NPPES public registry.