Dr. Lisa M Irwin
Dr. Lisa M Irwin is a Clinical Psychologist provider (Psychologist) practicing in Glendora, CA, registered in the NPPES registry with NPI 1659622991 since 2012.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1659622991 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Lisa M Irwin |
| Sex | Female |
| Practice address | Glendora, CA, 91741 |
| Phone | 6268064617 |
| Enumeration date | 2012-09-26 |
| Last updated in NPPES | 2012-09-26 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist | Primary | PSY18452 | CA |
Copy-ready billing details
Provider: Lisa Irwin NPI: 1659622991 Taxonomy: 103TC0700X (Clinical Psychologist) Address: Glendora, CA, 91741
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1063537520 | Madrid Jacobs-Brown | Individual | Marriage & Family Therapist | Glendora, CA |
| 1437378536 | Richard Foss | Individual | Clinical Psychologist | Glendora, CA |
| 1831381763 | Glenda Reid | Individual | Clinical Social Worker | Glendora, CA |
| 1629316682 | Theresa Tisdale | Individual | Clinical Psychologist | Glendora, CA |
| 1831574037 | Kimberly Moyer | Individual | Mental Health Counselor | Glendora, CA |
Verify this record
Cross-check NPI 1659622991 against the authoritative CMS record: view Dr. Lisa M Irwin 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
Is NPI 1659622991 active?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2012-09-26.