Doctor profile · Federal record
Dr. William Sieber, PH.D.
Clinical Psychologist · San Diego, CA
- NPI 1851413165
- Accepts Medicare
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
200 W Arbor Dr
San Diego, CA 921039000
(800) 926-8273 - Mailing address
-
Po Box 232410
San Diego, CA 921932410
Credentials & registration
- NPI registered
- April 2007 — 19 yrs on file
- Profile last updated
- February 5, 2019
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 103TC0700X — NUCC code
- State license (1)
- California #19435
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1851413165. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
125
Distinct HCPCS
2
Medicare allowed
$19,176
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
90837 |
Psychotherapy, 1 hour | 109 | 21 | $150 | |
90791 |
Psychiatric diagnostic evaluation | 16 | 16 | $175 |
In context: peer comparison
Among 31 peers in this city , average services per provider: 156. This provider delivers 0.8× the peer median.Frequently asked questions
What is Dr. William Sieber's medical specialty?
Dr. William Sieber practices Clinical Psychologist in San Diego, CA.
Where does Dr. William Sieber practice?
Dr. William Sieber practices at 200 W Arbor Dr, San Diego, CA 921039000. Office phone: 8009268273.
What is Dr. William Sieber's NPI?
Dr. William Sieber's National Provider Identifier (NPI) is 1851413165, issued by NPPES.
Does Dr. William Sieber accept Medicare assignment?
Yes. Dr. William Sieber accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. William Sieber commonly perform?
Top Medicare-reported procedures in 2023: Psychotherapy (HCPCS 90837); Psychiatric diagnostic evaluation (HCPCS 90791). Source: CMS Medicare Physician & Other Practitioners file.