Doctor profile · Federal record
Dr. Emery Chang, MD
Internal Medicine Physician (CMS: Internal Medicine) · Los Angeles, CA
- NPI 1649221383
- Accepts Medicare
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1399 Roxbury Dr, Ste 100
Los Angeles, CA 900354709
(310) 557-2273
Credentials & registration
- NPI registered
- May 2006 — 20 yrs on file
- Profile last updated
- February 6, 2014
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A91316
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1649221383. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
229
Distinct HCPCS
7
Medicare allowed
$35,643
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99215 |
Established patient office or other outpatient visit, 40-54 minutes | 113 | 43 | $195 | |
99214 |
Established patient office or other outpatient visit, 30-39 minutes | 30 | 15 | $136 | |
99442 |
Telephone medical discussion with physician, 11-20 minutes | 24 | 15 | $92 | |
G0008 |
Administration of influenza virus vaccine | 21 | 20 | $34 | |
G0438 |
Annual wellness visit; includes a personalized prevention plan of service (pps), initial visit | 19 | 19 | $163 | |
90677 |
Pneumococcal conjugate vaccine, 20 valent (pcv20), for intramuscular use | 11 | 11 | $283 | |
G0009 |
Administration of pneumococcal vaccine | 11 | 11 | $34 |
In context: peer comparison
Among 262 peers in Los Angeles Internal Medicine Physician, average services per provider: 160. This provider delivers 1.4× the peer median.Open Payments
Industry payments received
All-time total
$118
Transactions
1
Manufacturers
1
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| ViiV Healthcare Company | 1 | $117.60 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
708
Patients
46
Total drug cost
$952,988
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 149 | 34 | $2,013 |
| Dovato (Dolutegravir Sodium/Lamivudine) | Brand | 81 | 0 | $257,353 |
| Biktarvy (Bictegrav/Emtricit/Tenofov Ala) | Brand | 74 | 0 | $307,665 |
| Metformin Hcl ER (Metformin Hcl) | Brand | 56 | 12 | $837 |
| Tivicay (Dolutegravir Sodium) | Brand | 43 | 0 | $99,856 |
| Triumeq (Abacavir/Dolutegravir/Lamivudi) | Brand | 40 | 0 | $151,942 |
| Prezista (Darunavir) | Brand | 37 | 0 | $83,084 |
| Omeprazole | Generic | 36 | 0 | $378 |
| Amlodipine Besylate | Generic | 30 | 0 | $146 |
| Ezetimibe | Generic | 30 | 0 | $1,518 |
Frequently asked questions
What is Dr. Emery Chang's medical specialty?
Dr. Emery Chang practices Internal Medicine Physician in Los Angeles, CA.
Where does Dr. Emery Chang practice?
Dr. Emery Chang practices at 1399 Roxbury Dr, Los Angeles, CA 900354709. Office phone: 3105572273.
What is Dr. Emery Chang's NPI?
Dr. Emery Chang's National Provider Identifier (NPI) is 1649221383, issued by NPPES.
Does Dr. Emery Chang accept Medicare assignment?
Yes. Dr. Emery Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Emery Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99215); Established patient office or other outpatient visit (HCPCS 99214); Telephone medical discussion with physician (HCPCS 99442). Source: CMS Medicare Physician & Other Practitioners file.