Doctor profile · Federal record
Dr. Brian Williams, PA-C
Physician Assistant · Porterville, CA
- NPI 1598701914
- Accepts Medicare
- 37 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
560 W Putnam Ave
Porterville, CA 932573269
(559) 781-1665
fax (559) 781-6036 - Mailing address
-
2550 North Hollywood Way, Suite 209
Burbank, CA 915055019
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- December 23, 2025
- Year of graduation
- 1989 — 37 yrs since
- Specialty taxonomy
- 363A00000X — NUCC code
- State license (1)
- California #PA12516
- Medicaid
- CA #PA12516
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1598701914. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
357
Distinct HCPCS
7
Medicare allowed
$27,909
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 219 | 131 | $78 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 48 | 39 | $111 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 29 | 29 | $112 | |
87426 |
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus | 16 | 14 | $35 | |
90756 |
Influenza vaccine, quadrivalent derived from cell cultures | 16 | 16 | $32 | |
G0008 |
Administration of influenza virus vaccine | 15 | 15 | $27 | |
99212 |
Established patient office or other outpatient visit, 10-19 minutes | 14 | 14 | $49 |
In context: peer comparison
Among 6 peers in Porterville Physician Assistant, average services per provider: 101. This provider delivers 3.5× the peer median.Open Payments
Industry payments received
All-time total
$1,075
Transactions
49
Manufacturers
15
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 9 | $223.87 | |
| Abbvie INC. | 15 | $222.42 | |
| Astellas Pharma US INC | 3 | $137.19 | |
| Novo Nordisk INC | 4 | $82.85 | |
| Otsuka America Pharmaceutical, INC. | 3 | $58.72 | |
| Axsome Therapeutics, INC. | 2 | $56.34 | |
| Pfizer INC. | 3 | $53.61 | |
| AstraZeneca Pharmaceuticals Lp | 2 | $35.68 | |
| Amgen INC. | 2 | $34.43 | |
| Merck Sharp & Dohme LLC | 1 | $24.04 | |
| Daiichi Sankyo INC. | 1 | $22.96 | |
| Baxter Healthcare | 1 | $20.34 | |
| Boehringer Ingelheim Pharmaceuticals, INC. | 1 | $17.83 | |
| Exact Sciences Corporation | 1 | $17.71 | |
| Shield Therapeutics INC | 1 | $17.42 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
127
Patients
54
Total drug cost
$958
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Azithromycin | Generic | 19 | 14 | $124 |
| Ibuprofen | Generic | 18 | 11 | $218 |
| Prednisone | Generic | 18 | 18 | $40 |
| Hydrochlorothiazide | Generic | 14 | 0 | $70 |
| Naproxen | Generic | 12 | 0 | $66 |
| Pantoprazole Sodium | Generic | 12 | 0 | $120 |
| Trazodone Hcl | Generic | 12 | 0 | $82 |
| Atorvastatin Calcium | Generic | 11 | 0 | $186 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 11 | 11 | $51 |
Frequently asked questions
What is Dr. Brian Williams's medical specialty?
Dr. Brian Williams practices Physician Assistant in Porterville, CA.
Where does Dr. Brian Williams practice?
Dr. Brian Williams practices at 560 W Putnam Ave, Porterville, CA 932573269. Office phone: 5597811665.
What is Dr. Brian Williams's NPI?
Dr. Brian Williams's National Provider Identifier (NPI) is 1598701914, issued by NPPES.
Does Dr. Brian Williams accept Medicare assignment?
Yes. Dr. Brian Williams accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Brian Williams commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Established patient office or other outpatient visit (HCPCS 99214); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439). Source: CMS Medicare Physician & Other Practitioners file.