Albert Jeh-Seng Chang, MD
NPI 1790984805ActiveIndividual· Internal Medicine, Gastroenterology· Redlands, CA
Internal Medicine, Gastroenterology (MD) in Redlands, California, trained at Warren Alpert Medical School of Brown University (class of 2000). Their prescriptions cost Medicare Part D more than their services did: $376,137 for 753 claims, against $76,327 paid for services in 2024. Blue Earth Diagnostics was the largest of 3 companies reporting payments in 2025, $368.78 in all, mostly food and beverage.
Overview
| NPI | 1790984805 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Jul 18, 2007 |
| Last updated in NPPES | Feb 11, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A78996 | 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 | 14 |
|---|---|
| Services billed | 4,258 across 10 procedure codes |
| Paid by Medicare | $76,327 |
Part D prescriptions in 2024
| Prescriptions (claims) | 753 · 1,795 30-day fills |
|---|---|
| Patients | 220 |
| Total drug cost | $376,137 |
| Generic share | 81% of claims |
Education and affiliations
| Medical school | Warren Alpert Medical School of Brown University |
|---|---|
| Graduation year | 2000 |
| Medicare specialty | Gastroenterology |
Medical group
- Permanente Medical Group IncOakland, CA · 10,996 clinicians
Hospital affiliations
- Kaiser Foundation Hosp So SacramentoSacramento, CA
- Ronald Reagan UCLA Medical CenterLos Angeles, CA
Industry payments (Open Payments)
- 2025$368.78 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Blue Earth Diagnostics | $143.75 | 1 |
| Genzyme Corporation | $122.31 | 1 |
| Alcresta Therapeutics, Inc. | $102.72 | 1 |
What the 2025 payments were for
- Food and Beverage$368.78 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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