Dr. David Lorentzen, PSY.D.
Dr. David Lorentzen is a Clinical Psychologist provider (Psychologist) practicing in Pasadena, CA, registered in the NPPES registry with NPI 1881739175 since 2007. The credential PSYD stands for Doctor of Psychology. Practices at Equip Psychological Corporation (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1881739175 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. David Lorentzen |
| Credential | PSY.D. |
| Sex | Male |
| Practice address | Pasadena, CA, 91101 |
| Phone | 6262099747 |
| Enumeration date | 2007-02-21 |
| Last updated in NPPES | 2024-01-25 |
Street address withheld — NPPES sole-proprietor addresses can be home addresses. See our data policy.
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC2200X | Clinical Child & Adolescent Psychologist | Secondary | PSY 23226 | CA |
| 103TC0700X | Clinical Psychologist | Primary | PSY 23226 | CA |
PSYD — Doctor of Psychology: A clinical doctorate in psychology focused on professional practice. About the PSYD credential
Copy-ready billing details
Provider: David Lorentzen, PSY.D. NPI: 1881739175 Taxonomy: 103TC0700X (Clinical Psychologist) Address: Pasadena, CA, 91101
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1679705388 | Thomas Duke | Individual | Psychologist | Pasadena, CA |
| 1891370896 | Equip Psychological Corporation | Organization | Mental Health Counselor | Pasadena, CA |
| 1184358533 | Matthew Hoard | Individual | Student in an Organized Health Care Education/Training Program | Pasadena, CA |
| 1194503490 | Jonathan Doctorian | Individual | Clinical Psychologist | Pasadena, CA |
Verify this record
Cross-check NPI 1881739175 against the authoritative CMS record: view Dr. David Lorentzen 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 2024-01-25.