Robert A. Williams, PH.D.
NPI 1669614723ActiveIndividual· Psychologist· South San Francisco, CA
Psychologist (PH.D.) in South San Francisco, California, licensed in CA, with an NPI issued in April 2009. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1669614723 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PH.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 3, 2009 |
| Last updated in NPPES | Apr 3, 2009 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Psychologist Primary | 103T00000X | 21573 | CA |
| Psychologist, Addiction (Substance Use Disorder) | 103TA0400X | 21573 | CA |
| Psychologist, Clinical | 103TC0700X | 21573 | CA |
| Psychologist, Counseling | 103TC1900X | 21573 | CA |
| Psychologist, Clinical Child & Adolescent | 103TC2200X | 21573 | CA |
| Psychologist, Family | 103TF0000X | 21573 | CA |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in California, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Robert Earl Williams · Recruiter/Capper | 1128a3 | Dec 18, 2025 | Jamestown, CA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Not in the public enrollment file of Oct 1, 2026 |
|---|
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