Dr. David E. Duffy, PHD
Dr. David E. Duffy is a Clinical Psychologist provider (Psychologist) practicing in La Mesa, CA, registered in the NPPES registry with NPI 1326244955 since 2007. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1326244955 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. David E. Duffy |
| Credential | PHD |
| Sex | Male |
| Practice address | 8787 CENTER DR, La Mesa, CA, 91942 |
| Phone | 8002578715 |
| Fax | 8008191655 |
| Enumeration date | 2007-06-21 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist | Primary | PSY19177 | CA |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Copy-ready billing details
Provider: David Duffy, PHD NPI: 1326244955 Taxonomy: 103TC0700X (Clinical Psychologist) Address: 8787 CENTER DR, La Mesa, CA, 91942
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1154346070 | Georges Tichy | Individual | Clinical Psychologist | La Mesa, CA |
| 1942213681 | California Special Care Center | Organization | Skilled Nursing Facility | La Mesa, CA |
| 1457468233 | Hugh Pates | Individual | Clinical Psychologist | La Mesa, CA |
| 1053489526 | Leann Skimming | Individual | Clinical Psychologist | La Mesa, CA |
| 1629283429 | Patricia Harman-Mills | Individual | Occupational Therapist | La Mesa, CA |
| 1609019108 | Cindy Pham | Individual | Physical Therapist | La Mesa, CA |
| 1922303593 | Grace Guerrero | Individual | Physical Therapist | La Mesa, CA |
| 1689077588 | Mission Trails Healthcare LLC | Organization | Skilled Nursing Facility | La Mesa, CA |
Verify this record
Cross-check NPI 1326244955 against the authoritative CMS record: view Dr. David E. Duffy 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 2007-07-08.