Grissel Marquez, MSW
Grissel Marquez is a Clinical Social Worker provider (Social Worker) practicing in Oxnard, CA, registered in the NPPES registry with NPI 1598997983 since 2009.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1598997983 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Grissel Marquez |
| Credential | MSW |
| Sex | Female |
| Practice address | 2500 S C ST, SUITE D, Oxnard, CA, 93033 |
| Phone | 8053859460 |
| Enumeration date | 2009-08-18 |
| Last updated in NPPES | 2024-02-12 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 101YM0800X | Mental Health Counselor | Secondary | — | — |
| 104100000X | Social Worker | Secondary | — | — |
| 1041C0700X | Clinical Social Worker | Primary | 63285 | CA |
Copy-ready billing details
Provider: Grissel Marquez, MSW NPI: 1598997983 Taxonomy: 1041C0700X (Clinical Social Worker) Address: 2500 S C ST, SUITE D, Oxnard, CA, 93033
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1780873372 | Ventura County Public Health | Organization | Case Management Agency | Oxnard, CA |
| 1225227614 | Ventura County Public Health Department | Organization | Case Manager/Care Coordinator | Oxnard, CA |
| 1669661054 | Anna Marie Aguilar | Individual | Case Management Registered Nurse | Oxnard, CA |
| 1891984050 | Ann Porter | Individual | Case Management Registered Nurse | Oxnard, CA |
| 1194038794 | Eva Reeder | Individual | Case Management Registered Nurse | Oxnard, CA |
| 1164728531 | Alexandria Redfin | Individual | Peer Specialist | Oxnard, CA |
| 1023452802 | Felicia Garcia | Individual | Marriage & Family Therapist | Oxnard, CA |
| 1073932869 | Jessica Nguyen | Individual | Marriage & Family Therapist | Oxnard, CA |
Verify this record
Cross-check NPI 1598997983 against the authoritative CMS record: view Grissel Marquez on the official NPPES registry .
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. Read the full guide or validate an NPI number.
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2024-02-12.