Dr. William Frederick Riess, PH.D.
Dr. William Frederick Riess is a Clinical Psychologist provider (Psychologist) practicing in Berkeley, CA, registered in the NPPES registry with NPI 1700969235 since 2006. The credential PHD stands for Doctor of Philosophy.
✓ Active NPI ✓ Valid NPI checksum Sole proprietor
| NPI | 1700969235 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | Dr. William Frederick Riess |
| Credential | PH.D. |
| Sex | Male |
| Practice address | Berkeley, CA, 94704 |
| Phone | 5108456892 |
| Fax | 5108455489 |
| Enumeration date | 2006-10-20 |
| 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 |
|---|---|---|---|---|
| 103TC0700X | Clinical Psychologist | Primary | PSY2810 | CA |
PHD — Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| PSY2810 | Other | CA | BLUE SHIELD/BLUE CROSS |
Copy-ready billing details
Provider: William Riess, PH.D. NPI: 1700969235 Taxonomy: 103TC0700X (Clinical Psychologist) Address: Berkeley, CA, 94704
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1003850421 | John Rosenberg | Individual | Psychiatry Physician | Berkeley, CA |
| 1356424386 | Nancy Ebbert | Individual | Psychiatry Physician | Berkeley, CA |
| 1841329778 | Thomasine Mcfarlin | Individual | Clinical Social Worker | Berkeley, CA |
| 1407294176 | Alice Robinson | Individual | Marriage & Family Therapist | Berkeley, CA |
| 1902212046 | Adam Rochmes | Individual | Clinical Psychologist | Berkeley, CA |
| 1871970996 | Mary Tennes | Individual | Psychoanalysis Psychologist | Berkeley, CA |
| 1598291544 | Beverly Burch | Individual | Social Worker | Berkeley, CA |
Verify this record
Cross-check NPI 1700969235 against the authoritative CMS record: view Dr. William Frederick Riess 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.