Doctor profile · Federal record
Dr. Weyjuin Chao, M.D.
Emergency Medicine Physician (CMS: Emergency Medicine) · South El Monte, CA
- NPI 1154852218
- Accepts Medicare
- MIPS 76.4 / 100 · 2023
- 9 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
Operates at 2 locations .
- Primary practice
-
1701 Santa Anita Ave
South El Monte, CA 917333411
(626) 579-7777 - Additional location
-
1 Gustave L Levy Pl, Box 1149
New York, NY 100296504
(212) 824-8069 - Mailing address
-
1 Gustave L Levy Pl, Box 1149
New York, NY 100296504
Credentials & registration
- NPI registered
- March 2017 — 9 yrs on file
- Profile last updated
- July 6, 2021
- Year of graduation
- 2017 — 9 yrs since
- Specialty taxonomy
- 207P00000X — NUCC code
- State license (1)
- California #A172222
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1154852218. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
487
Distinct HCPCS
6
Medicare allowed
$65,835
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99285 |
Emergency department visit with high level of medical decision making | 192 | 188 | $176 | |
93010 |
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only | 110 | 96 | $8 | |
99284 |
Emergency department visit with moderate level of medical decision making | 70 | 68 | $123 | |
99291 |
Critical care, first 30-74 minutes | 67 | 67 | $219 | |
99223 |
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | 36 | 36 | $185 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 12 | 12 | $97 |
In context: peer comparison
Among 3 peers in South El Monte Emergency Medicine Physician, average services per provider: 129. This provider delivers 3.8× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
98
Patients
98
Total drug cost
$736
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Cephalexin | Generic | 22 | 22 | $215 |
| Ondansetron Odt (Ondansetron) | Brand | 18 | 18 | $161 |
| Ibuprofen | Generic | 17 | 17 | $84 |
| Amoxicillin-Clavulanate Potass (Amoxicillin/Potassium Clav) | Brand | 15 | 15 | $135 |
| Hydrocodone-Acetaminophen (Hydrocodone/Acetaminophen) | Brand | 14 | 14 | $49 |
| Methocarbamol | Generic | 12 | 12 | $93 |
Frequently asked questions
What is Dr. Weyjuin Chao's medical specialty?
Dr. Weyjuin Chao practices Emergency Medicine Physician in South El Monte, CA.
Where does Dr. Weyjuin Chao practice?
Dr. Weyjuin Chao practices at 1701 Santa Anita Ave, South El Monte, CA 917333411. Office phone: 6265797777.
What is Dr. Weyjuin Chao's NPI?
Dr. Weyjuin Chao's National Provider Identifier (NPI) is 1154852218, issued by NPPES.
Does Dr. Weyjuin Chao accept Medicare assignment?
Yes. Dr. Weyjuin Chao accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Weyjuin Chao 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.