Dr. Mark Lloyd Streets, PHD
Dr. Mark Lloyd Streets is a Clinical Psychologist provider (Psychologist) practicing in Chico, CA, registered in the NPPES registry with NPI 1164587705 since 2006. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1164587705 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. Mark Lloyd Streets |
| Credential | PHD |
| Sex | Male |
| Practice address | 1660 HUMBOLDT RD, SUITE 3, Chico, CA, 95928 |
| Phone | 5308916521 |
| Enumeration date | 2006-12-26 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist | Primary | PSY11878 | 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: Mark Streets, PHD NPI: 1164587705 Taxonomy: 103TC0700X (Clinical Psychologist) Address: 1660 HUMBOLDT RD, SUITE 3, Chico, CA, 95928
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1437148491 | Francis Mcdermott | Individual | Specialist | Chico, CA |
| 1194750364 | Margaret Mcdonald | Individual | Psychologist | Chico, CA |
| 1013137678 | Philip Horning | Individual | General Practice Dentistry | Chico, CA |
| 1558522649 | Jin R Soofi MD PC | Organization | Psychiatry Physician | Chico, CA |
| 1023490125 | Danielle Farris | Individual | Psychiatric/Mental Health Nurse Practitioner | Chico, CA |
| 1053796086 | Francis Patrick Mcdermott, Jr. | Organization | Psychiatry Physician | Chico, CA |
Verify this record
Cross-check NPI 1164587705 against the authoritative CMS record: view Dr. Mark Lloyd Streets 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.