Doctor profile · Federal record
Dr. Timothy Williamson, M.D.
Emergency Medicine Physician · Pediatrics Physician · General Practice Physician · Ojai, CA
- NPI 1023168721
- 19 yrs on file
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
207 Church RD
Ojai, CA 930233119
(805) 646-4386
fax (805) 646-9188
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- May 13, 2020
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #G32937
- Medicaid
- CA #00G329370
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1023168721. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
758
Distinct HCPCS
10
Medicare allowed
$69,941
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 235 | 87 | $135 | |
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 137 | 72 | $97 | |
99497 |
Advance care planning, first 30 minutes | 68 | 68 | $87 | |
G0444 |
Annual depression screening, 5 to 15 minutes | 63 | 63 | $20 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 55 | 55 | $139 | |
36415 |
Insertion of needle into vein for collection of blood sample | 54 | 43 | $8 | |
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 36 | 25 | $192 | |
G0008 |
Administration of influenza virus vaccine | 35 | 34 | $33 | |
36410 |
Insertion of needle into vein (3 years or older) | 34 | 31 | $18 | |
90688 |
Influenza vaccine, quadrivalent, 0.5 ml dosage | 28 | 27 | $20 |
In context: peer comparison
Among 1 peers in Ojai Emergency Medicine Physician, average services per provider: 68. This provider delivers 11× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
563
Patients
76
Total drug cost
$21,119
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Levothyroxine Sodium | Generic | 87 | 22 | $1,654 |
| Benazepril Hcl | Generic | 63 | 14 | $817 |
| Simvastatin | Generic | 53 | 18 | $835 |
| Atorvastatin Calcium | Generic | 50 | 11 | $546 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 47 | 0 | $848 |
| Benazepril-Hydrochlorothiazide (Benazepril/Hydrochlorothiazide) | Brand | 36 | 11 | $1,609 |
| Losartan Potassium | Generic | 33 | 0 | $698 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 31 | 0 | $338 |
| Sertraline Hcl | Generic | 27 | 0 | $431 |
| Lisinopril | Generic | 26 | 0 | $380 |
Frequently asked questions
What is Dr. Timothy Williamson's medical specialty?
Dr. Timothy Williamson practices Emergency Medicine Physician in Ojai, CA.
Where does Dr. Timothy Williamson practice?
Dr. Timothy Williamson practices at 207 Church RD, Ojai, CA 930233119. Office phone: 8056464386.
What is Dr. Timothy Williamson's NPI?
Dr. Timothy Williamson's National Provider Identifier (NPI) is 1023168721, issued by NPPES.
What procedures does Dr. Timothy Williamson commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Established patient office or other outpatient visit (HCPCS 99213); Advance care planning (HCPCS 99497). Source: CMS Medicare Physician & Other Practitioners file.