Andrew C. Chang, M.D.
NPI 1396702874ActiveIndividual· Internal Medicine, Gastroenterology· Loma Linda, CA
Internal Medicine, Gastroenterology (M.D.) in Loma Linda, California, trained at Loma Linda University School of Medicine (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $139,815 for 419 claims, against $49,884 paid for services in 2024. Boston Scientific Corporation reported $161.10 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1396702874 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 27, 2006 |
| Last updated in NPPES | Jun 23, 2025 |
| Certified by provider | Jun 23, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G72746 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 277 |
|---|---|
| Services billed | 449 across 39 procedure codes |
| Paid by Medicare | $49,884 |
Part D prescriptions in 2024
| Prescriptions (claims) | 419 · 662 30-day fills |
|---|---|
| Patients | 178 |
| Total drug cost | $139,815 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Loma Linda University School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Faculty Physicians and Surgeons of LlusmLoma Linda, CA · 1,315 clinicians
Hospital affiliations
- Loma Linda University Medical CenterLoma Linda, CA
- Riverside University Health System-Medical CenterMoreno Valley, CA
Industry payments (Open Payments)
- 2025$161.10 · 2 payments from 1 company
- 2024$95.80 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $161.10 | 2 |
What the 2025 payments were for
- Food and Beverage$161.10 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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