Doctor profile · Federal record
Dr. David Chang, DO
Emergency Medicine Physician (CMS: Emergency Medicine) · Student in an Organized Health Care Education/Training Program · Sunnyvale, TX
- NPI 1538797691
- Accepts Medicare
- 6 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
231 S Collins RD
Sunnyvale, TX 751828224
(972) 892-3000
Credentials & registration
- NPI registered
- April 2020 — 6 yrs on file
- Profile last updated
- August 3, 2023
- Year of graduation
- 2020 — 6 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- Texas #U0088
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1538797691. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
198
Distinct HCPCS
4
Medicare allowed
$24,529
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 66 | 63 | $172 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 54 | 49 | $8 | |
99284 |
Emergency department visit with moderate level of medical decision making | 40 | 40 | $119 | |
99291 |
Critical care, first 30-74 minutes | 38 | 38 | $210 |
In context: peer comparison
Among 3 peers in this city , average services per provider: 54. This provider delivers 3.7× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
83
Patients
83
Total drug cost
$441
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 21 | 21 | $109 |
| Naproxen | Generic | 18 | 18 | $52 |
| Sulfamethoxazole-Trimethoprim (Sulfamethoxazole/Trimethoprim) | Brand | 18 | 18 | $86 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 13 | 13 | $157 |
| Cyclobenzaprine Hcl | Generic | 13 | 13 | $37 |
Frequently asked questions
What is Dr. David Chang's medical specialty?
Dr. David Chang practices Emergency Medicine Physician in Sunnyvale, TX.
Where does Dr. David Chang practice?
Dr. David Chang practices at 231 S Collins RD, Sunnyvale, TX 751828224. Office phone: 9728923000.
What is Dr. David Chang's NPI?
Dr. David Chang's National Provider Identifier (NPI) is 1538797691, issued by NPPES.
Does Dr. David Chang accept Medicare assignment?
Yes. Dr. David Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. David Chang commonly perform?
Top Medicare-reported procedures in 2023: Emergency department visit with high level of medical decision making (HCPCS 99285); Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (HCPCS 93010); Emergency department visit with moderate level of medical decision making (HCPCS 99284). Source: CMS Medicare Physician & Other Practitioners file.