Doctor profile · Federal record
Dr. John Chang, MD
Gastroenterology Physician (CMS: Gastroenterology) · San Diego, CA
- NPI 1265594527
- Accepts Medicare
- 25 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
200 W Arbor Dr
San Diego, CA 921039000
(800) 926-8273 - Mailing address
-
Po Box 232410
San Diego, CA 921932410
Credentials & registration
- NPI registered
- December 2006 — 20 yrs on file
- Profile last updated
- August 21, 2023
- Year of graduation
- 2001 — 25 yrs since
- Specialty taxonomy
- 207RG0100X — NUCC code
- State license (1)
- California #A110350
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1265594527. Last verified May 11, 2026.Open Payments
Industry payments received
All-time total
$6,942
Transactions
10
Manufacturers
2
| Payer (manufacturer) | Industry | Txns | Amount |
|---|---|---|---|
| Abbvie INC. | 9 | $6,926.62 | |
| Boston Scientific Corporation | 1 | $15.20 |
By nature of payment
Hospital affiliations
Frequently asked questions
What is Dr. John Chang's medical specialty?
Dr. John Chang practices Gastroenterology Physician in San Diego, CA.
Where does Dr. John Chang practice?
Dr. John Chang practices at 200 W Arbor Dr, San Diego, CA 921039000. Office phone: 8009268273.
What is Dr. John Chang's NPI?
Dr. John Chang's National Provider Identifier (NPI) is 1265594527, issued by NPPES.
Does Dr. John Chang accept Medicare assignment?
Yes. Dr. John Chang accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.