Doctor profile · Federal record
Dr. Chao Sun, M.D.
Occupational Medicine Physician (CMS: General Practice) · Pleasanton, CA
- NPI 1013118884
- 43 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
5700 Stoneridge Mall RD Ste 100
Pleasanton, CA 945882872
(925) 915-9530 - Mailing address
-
770 Mason St
Vacaville, CA 956884646
Credentials & registration
- NPI registered
- May 2007 — 19 yrs on file
- Profile last updated
- August 21, 2012
- Year of graduation
- 1983 — 43 yrs since
- Specialty taxonomy
- 2083X0100X — NUCC code
- State license (1)
- California #A101860
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1013118884. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,897
Distinct HCPCS
3
Medicare allowed
$247,449
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 1,386 | 107 | $143 | |
98929 |
Osteopathic manipulative treatment, 9-10 body regions | 489 | 37 | $93 | |
99204 |
New patient office or other outpatient visit, 45-59 minutes | 22 | 22 | $185 |
In context: peer comparison
Among 1 peers in this city , average services per provider: 632. This provider delivers 3.0× the peer median.Open Payments
Industry payments received
All-time total
$55
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| RxSight Inc | 1 | $55.11 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
387
Patients
111
Total drug cost
$9,114
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Amlodipine Besylate | Generic | 55 | 24 | $1,543 |
| Simvastatin | Generic | 46 | 20 | $1,221 |
| Metformin Hcl | Generic | 33 | 11 | $842 |
| Losartan Potassium | Generic | 31 | 12 | $729 |
| Atorvastatin Calcium | Generic | 26 | 0 | $647 |
| Paxlovid (Eua) (Nirmatrelvir/Ritonavir) | Brand | 26 | 22 | $272 |
| Lisinopril | Generic | 25 | 0 | $326 |
| Omeprazole | Generic | 22 | 0 | $1,273 |
| Levothyroxine Sodium | Generic | 21 | 0 | $455 |
| Naproxen | Generic | 20 | 0 | $135 |
Frequently asked questions
What is Dr. Chao Sun's medical specialty?
Dr. Chao Sun practices Occupational Medicine Physician in Pleasanton, CA.
Where does Dr. Chao Sun practice?
Dr. Chao Sun practices at 5700 Stoneridge Mall RD Ste 100, Pleasanton, CA 945882872. Office phone: 9259159530.
What is Dr. Chao Sun's NPI?
Dr. Chao Sun's National Provider Identifier (NPI) is 1013118884, issued by NPPES.
Does Dr. Chao Sun accept Medicare assignment?
Dr. Chao Sun does not accept Medicare assignment for all services. Patients may be billed amounts beyond Medicare-allowed charges.
What procedures does Dr. Chao Sun commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Osteopathic manipulative treatment, 9-10 body regions (HCPCS 98929); New patient office or other outpatient visit (HCPCS 99204). Source: CMS Medicare Physician & Other Practitioners file.