Steven Marshall Mandell, DC
Steven Marshall Mandell is a Chiropractor provider (Chiropractor) practicing in Glendora, CA, registered in the NPPES registry with NPI 1245459452 since 2007. The credential DC stands for Doctor of Chiropractic. Practices at Advanced Mindset Psychological Services (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1245459452 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Steven Marshall Mandell |
| Credential | DC |
| Sex | Male |
| Practice address | Glendora, CA, 91741 |
| Phone | 6269144461 |
| Fax | 6269147014 |
| Enumeration date | 2007-04-25 |
| Last updated in NPPES | 2007-07-08 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 111N00000X | Chiropractor | Primary | DC016665 | CA |
DC — Doctor of Chiropractic: A licensed chiropractor focusing on musculoskeletal and nervous system disorders. About the DC credential
Copy-ready billing details
Provider: Steven Mandell, DC NPI: 1245459452 Taxonomy: 111N00000X (Chiropractor) Address: Glendora, CA, 91741
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1427269695 | Raymond Jones | Individual | Marriage & Family Therapist | Glendora, CA |
| 1497077291 | Christene Lozano | Individual | Marriage & Family Therapist | Glendora, CA |
| 1164969671 | Heather Seguin | Individual | Marriage & Family Therapist | Glendora, CA |
| 1639683295 | Michael Uthoff | Individual | Clinical Psychologist | Glendora, CA |
| 1063903425 | Advanced Mindset Psychological Services | Organization | Mental Health Counselor | Glendora, CA |
Verify this record
Cross-check NPI 1245459452 against the authoritative CMS record: view Steven Marshall Mandell 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 2007-07-08.