Doctor profile · Federal record
Dr. Jyh Chang, M.D.
Internal Medicine Physician (CMS: Internal Medicine) · Baldwin Park, CA
- NPI 1346259595
- Accepts Medicare
- 42 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
4318 Maine Ave Ste A
Baldwin Park, CA 917063326
(626) 962-5141
fax (626) 338-4191
Credentials & registration
- NPI registered
- August 2006 — 20 yrs on file
- Profile last updated
- January 13, 2026
- Year of graduation
- 1984 — 42 yrs since
- Specialty taxonomy
- 207R00000X — NUCC code
- State license (1)
- California #A46003
- Medicaid (2)
- CA #GR0071680 · CA #00A460031
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1346259595. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
367
Distinct HCPCS
4
Medicare allowed
$32,908
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
99213 |
Established patient office or other outpatient visit, 20-29 minutes | 287 | 106 | $88 | |
G0439 |
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | 40 | 40 | $140 | |
G0008 |
Administration of influenza virus vaccine | 23 | 23 | $30 | |
90662 |
Influenza vaccine split virus, preservative free | 17 | 17 | $72 |
In context: peer comparison
Among 7 peers in Baldwin Park Internal Medicine Physician, average services per provider: 68. This provider delivers 5.4× the peer median.Open Payments
Industry payments received
All-time total
$262
Transactions
7
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Lilly USA, LLC | 4 | $204.31 | |
| Novo Nordisk INC | 3 | $57.44 |
By nature of payment
Medicare Part D · 2023
Top prescriptions
Total claims
2,627
Patients
887
Total drug cost
$42,963
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Atorvastatin Calcium | Generic | 413 | 126 | $7,529 |
| Metformin Hcl | Generic | 347 | 98 | $4,342 |
| Losartan Potassium | Generic | 211 | 67 | $3,377 |
| Amlodipine Besylate | Generic | 201 | 67 | $2,698 |
| Omeprazole | Generic | 174 | 59 | $3,006 |
| Benazepril Hcl | Generic | 172 | 46 | $2,552 |
| Tamsulosin Hcl | Generic | 155 | 47 | $3,161 |
| Lisinopril | Generic | 144 | 45 | $1,440 |
| Ibuprofen | Generic | 142 | 66 | $1,119 |
| Levothyroxine Sodium | Generic | 141 | 42 | $3,001 |
Frequently asked questions
What is Dr. Jyh Chang's medical specialty?
Dr. Jyh Chang practices Internal Medicine Physician in Baldwin Park, CA.
Where does Dr. Jyh Chang practice?
Dr. Jyh Chang practices at 4318 Maine Ave Ste A, Baldwin Park, CA 917063326. Office phone: 6269625141.
What is Dr. Jyh Chang's NPI?
Dr. Jyh Chang's National Provider Identifier (NPI) is 1346259595, issued by NPPES.
Does Dr. Jyh Chang accept Medicare assignment?
Yes. Dr. Jyh Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Jyh Chang commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99213); Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit (HCPCS G0439); Administration of influenza virus vaccine (HCPCS G0008). Source: CMS Medicare Physician & Other Practitioners file.