Doctor profile · Federal record
Dr. Stephanie Williams, PHD
Psychologist (CMS: Clinical Psychologist) · Professional Counselor · Clinical Neuropsychologist · Clinical Psychologist · Forensic Psychologist · Gilroy, CA
- NPI 1669765590
- Accepts Medicare
- 11 yrs in practice
- Licensed in 2 states
- Female
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
8355 Church St
Gilroy, CA 950204406
(408) 359-6700 - Mailing address
-
Po Box 657
Gilroy, CA 950210657
Credentials & registration
- NPI registered
- May 2011 — 15 yrs on file
- Profile last updated
- May 5, 2022
- Year of graduation
- 2015 — 11 yrs since
- Specialty taxonomy
- 103T00000X — NUCC code
- State licenses (2)
- California #PSY29189 · Georgia #006131
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1669765590. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
698
Distinct HCPCS
3
Medicare allowed
$99,106
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90837 |
Psychotherapy, 1 hour | 652 | 39 | $143 | |
90834 |
Psychotherapy, 45 minutes | 26 | 12 | $98 | |
90791 |
Psychiatric diagnostic evaluation | 20 | 20 | $167 |
In context: peer comparison
Among 1 peers in Gilroy Psychologist, average services per provider: 232. This provider delivers 3.0× the peer median.Frequently asked questions
What is Dr. Stephanie Williams's medical specialty?
Dr. Stephanie Williams practices Psychologist in Gilroy, CA.
Where does Dr. Stephanie Williams practice?
Dr. Stephanie Williams practices at 8355 Church St, Gilroy, CA 950204406. Office phone: 4083596700.
What is Dr. Stephanie Williams's NPI?
Dr. Stephanie Williams's National Provider Identifier (NPI) is 1669765590, issued by NPPES.
Does Dr. Stephanie Williams accept Medicare assignment?
Yes. Dr. Stephanie Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephanie Williams commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837); Psychotherapy (HCPCS 90834); Psychiatric diagnostic evaluation (HCPCS 90791). Source: CMS Medicare Physician & Other Practitioners file.