Doctor profile · Federal record
Dr. James Williamson, PA-C
Medical Physician Assistant · Stockton, CA
- NPI 1306072046
- 17 yrs on file
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
7707 Austin RD
Stockton, CA 952158312
(209) 467-4544
Credentials & registration
- NPI registered
- June 2009 — 17 yrs on file
- Profile last updated
- January 7, 2015
- Specialty taxonomy
- 363AM0700X — NUCC code
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1306072046. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
160
Distinct HCPCS
4
Medicare allowed
$17,229
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99284 |
Emergency department visit with moderate level of medical decision making | 101 | 91 | $99 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 32 | 27 | $144 | |
99283 |
Emergency department visit with low level of medical decision making | 15 | 14 | $60 | |
99285 |
Emergency department visit with high level of medical decision making | 12 | 11 | $147 |
In context: peer comparison
Among 1 peers in Stockton Medical Physician Assistant, average services per provider: 40. This provider delivers 4.0× the peer median.Open Payments
Industry payments received
All-time total
$567
Transactions
22
Manufacturers
6
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Corcept Therapeutics | 15 | $432.55 | |
| Lilly USA, LLC | 3 | $59.39 | |
| Novo Nordisk INC | 1 | $22.64 | |
| Bayer Healthcare Pharmaceuticals INC. | 1 | $19.62 | |
| BrainScope Company, INC. | 1 | $19.55 | |
| AstraZeneca Pharmaceuticals Lp | 1 | $13.09 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,221
Patients
682
Total drug cost
$128,366
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 315 | 98 | $6,707 |
| Levothyroxine Sodium | Generic | 234 | 60 | $3,994 |
| Lisinopril | Generic | 206 | 62 | $2,944 |
| Amlodipine Besylate | Generic | 196 | 48 | $2,832 |
| Metformin Hcl | Generic | 179 | 53 | $3,647 |
| Ibuprofen | Generic | 161 | 117 | $859 |
| Hydrochlorothiazide | Generic | 156 | 41 | $1,099 |
| Simvastatin | Generic | 108 | 33 | $1,861 |
| Omeprazole | Generic | 104 | 24 | $1,662 |
| Furosemide | Generic | 100 | 33 | $614 |
Frequently asked questions
What is Dr. James Williamson's medical specialty?
Dr. James Williamson practices Medical Physician Assistant in Stockton, CA.
Where does Dr. James Williamson practice?
Dr. James Williamson practices at 7707 Austin RD, Stockton, CA 952158312. Office phone: 2094674544.
What is Dr. James Williamson's NPI?
Dr. James Williamson's National Provider Identifier (NPI) is 1306072046, issued by NPPES.
What procedures does Dr. James Williamson commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with moderate level of medical decision making (HCPCS 99284); Initial hospital care with moderate level of medical decision making (HCPCS 99223); Emergency department visit with low level of medical decision making (HCPCS 99283). Source: CMS Medicare Physician & Other Practitioners file.