Mark Anthony Lopez, MSW
Mark Anthony Lopez is a Social Worker provider (Social Worker) practicing in Altadena, CA, registered in the NPPES registry with NPI 1538469937 since 2010.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1538469937 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Mark Anthony Lopez |
| Credential | MSW |
| Sex | Male |
| Practice address | 2933 EL NIDO DR, Altadena, CA, 91001 |
| Phone | 6263957100 |
| Enumeration date | 2010-11-01 |
| Last updated in NPPES | 2014-06-09 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 104100000X | Social Worker | Primary | ASW28964 | CA |
Copy-ready billing details
Provider: Mark Lopez, MSW NPI: 1538469937 Taxonomy: 104100000X (Social Worker) Address: 2933 EL NIDO DR, Altadena, CA, 91001
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1821124942 | Allan Mcdonald | Individual | Psychiatry Physician | Altadena, CA |
| 1659400117 | Daniel Vallecillo | Individual | Rehabilitation Practitioner | Altadena, CA |
| 1851420509 | Julie Farino | Individual | Licensed Psychiatric Technician | Altadena, CA |
| 1841320165 | Francis Ortega | Individual | Rehabilitation Practitioner | Altadena, CA |
| 1013047331 | Joseph Santoyo | Individual | Rehabilitation Practitioner | Altadena, CA |
| 1528198843 | Shantelle Westbrook | Individual | Recreation Therapist | Altadena, CA |
| 1295865475 | Arthur Zamora | Individual | Rehabilitation Practitioner | Altadena, CA |
| 1033249297 | Greg Kammarmeyer | Individual | Rehabilitation Practitioner | Altadena, CA |
Verify this record
Cross-check NPI 1538469937 against the authoritative CMS record: view Mark Anthony Lopez 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.
Frequently asked questions
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2014-06-09.