Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alessa L Lopez-Castor, FNP-C
Nurse Practitioner in Tulalip, WA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1285661744
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Registry record
Entity type Individual (Type 1)
Name Alessa L Lopez-Castor
Credential FNP-C
Sex Female
Practice address 6330 31st Ave Ne Ste 101, Tulalip, WA, 98271
Phone (360) 716-2200
Fax (360) 716-2211
Enumeration date Jun 28, 2006
Last updated in NPPES Jul 18, 2023
Taxonomy & licenses
363L00000X Nurse Practitioner Physician Assistants & Advanced Practice Nursing Providers · License AP60420859 (WA) Primary
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| NPWF1 | Other | ID | BLUE CROSS |
| 80693310 | Medicaid | ID | - |
| 000010152176 | Other | ID | BLUE SHIELD |
| 2035703 | Medicaid | WA | - |
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
What is the NPI number for Alessa Lopez-Castor?
The National Provider Identifier (NPI) for Alessa Lopez-Castor is 1285661744, a Type 1 (individual) record in the CMS NPPES registry.
Where does Alessa Lopez-Castor practice?
The practice location on file with NPPES is in Tulalip, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Rebecca Epperson Family Nurse Practitioner · Tulalip, WA NPI 1710396387 Elissa Jules Addiction (Substance Use Disorder) Counselor · Tulalip, WA NPI 1689232639 Ryan Cuddy Addiction (Substance Use Disorder) Counselor · Tulalip, WA NPI 1326661752 Tulalip Tribes of Washington Quil Ceda Creek Counseling Methadone Clinic · Tulalip, WA NPI 1699356683 Tulalip Tribes of Washington Quil Ceda Creek Counseling General Practice Physician · Tulalip, WA NPI 1578272712 Skyla Henry Addiction (Substance Use Disorder) Counselor · Tulalip, WA NPI 1285526269
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-07-18.