Amy Chang, MD
NPI 1962848960ActiveIndividual· Internal Medicine, Infectious Disease· Stanford, CA
Internal Medicine, Infectious Disease (MD) in Stanford, California, trained at Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (class of 2013). 147 Medicare patients in 2024, $51,926 paid; nearly all of their 111 Part D prescriptions were generic (97%). Insulet Corporation reported $44.39 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1962848960 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 16, 2013 |
| Last updated in NPPES | Apr 16, 2024 |
| Certified by provider | Apr 16, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A142120 | CA |
| Internal Medicine | 207R00000X | A142120 | CA |
| Internal Medicine | 207R00000X | 142120 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 147 |
|---|---|
| Services billed | 524 across 17 procedure codes |
| Paid by Medicare | $51,926 |
Part D prescriptions in 2024
| Prescriptions (claims) | 111 · 213 30-day fills |
|---|---|
| Patients | 32 |
| Total drug cost | $9,788 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University |
|---|---|
| Graduation year | 2013 |
| Medicare specialty | Infectious Disease |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$44.39 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Insulet Corporation | $44.39 | 1 |
What the 2025 payments were for
- Food and Beverage$44.39 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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