Doctor profile · Federal record
Dr. Joshua Williams, PSY.D.
Clinical Psychologist · Westlake Village, CA
- NPI 1285863613
- Accepts Medicare
- 15 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
31194 la Baya Dr Ste 100
Westlake Village, CA 913626420
(805) 242-2429
fax (310) 870-7197
Credentials & registration
- NPI registered
- July 2009 — 17 yrs on file
- Profile last updated
- January 9, 2025
- Year of graduation
- 2011 — 15 yrs since
- Specialty taxonomy
- 103TC0700X — NUCC code
- State license (1)
- California #PSY25169
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1285863613. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
710
Distinct HCPCS
6
Medicare allowed
$44,622
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90785 |
Psychiatric services complicated by communication factor | 248 | 93 | $15 | |
90832 |
Psychotherapy, 30 minutes | 218 | 105 | $75 | |
99484 |
Care management services for behavioral health conditions, 20 minutes or more clinical staff time directed by health care professional | 107 | 56 | $42 | |
90791 |
Psychiatric diagnostic evaluation | 76 | 76 | $173 | |
90791 |
Psychiatric diagnostic evaluation | 42 | 42 | $154 | |
99484 |
Care management services for behavioral health conditions, 20 minutes or more clinical staff time directed by health care professional | 19 | 19 | $30 |
In context: peer comparison
Among 11 peers in this city , average services per provider: 896. This provider delivers 0.8× the peer median.Frequently asked questions
What is Dr. Joshua Williams's medical specialty?
Dr. Joshua Williams practices Clinical Psychologist in Westlake Village, CA.
Where does Dr. Joshua Williams practice?
Dr. Joshua Williams practices at 31194 la Baya Dr Ste 100, Westlake Village, CA 913626420. Office phone: 8052422429.
What is Dr. Joshua Williams's NPI?
Dr. Joshua Williams's National Provider Identifier (NPI) is 1285863613, issued by NPPES.
Does Dr. Joshua Williams accept Medicare assignment?
Yes. Dr. Joshua Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Joshua Williams commonly perform?
Top Medicare-reported procedures in 2023: Psychiatric services complicated by communication factor (HCPCS 90785); Psychotherapy (HCPCS 90832); Care management services for behavioral health conditions (HCPCS 99484). Source: CMS Medicare Physician & Other Practitioners file.