Stephen Chang, MD,PHD
NPI 1417240227ActiveIndividual· Internal Medicine, Cardiovascular Disease· Stanford, CA
Internal Medicine, Cardiovascular Disease (MD,PHD) in Stanford, California, trained at University of Cincinnati College of Medicine (class of 2009). Their prescriptions cost Medicare Part D more than their services did: $106,681 for 578 claims, against $16,424 paid for services in 2024. Boston Scientific Corporation reported $65.73 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1417240227 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD,PHD |
| Sole proprietor | No |
| NPI issued | May 26, 2011 |
| Last updated in NPPES | Apr 14, 2024 |
| Certified by provider | Apr 14, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | A130712 | CA |
| Internal Medicine | 207R00000X | A130712 | 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 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 135 |
|---|---|
| Services billed | 211 across 18 procedure codes |
| Paid by Medicare | $16,424 |
Part D prescriptions in 2024
| Prescriptions (claims) | 578 · 1,496 30-day fills |
|---|---|
| Patients | 105 |
| Total drug cost | $106,681 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Cincinnati College of Medicine |
|---|---|
| Graduation year | 2009 |
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliations
- Stanford Health CareStanford, CA
- Stanford Health Care Tri-ValleyPleasanton, CA
Industry payments (Open Payments)
- 2025$65.73 · 1 payment from 1 company
- 2024$259.90 · 3 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $65.73 | 1 |
What the 2025 payments were for
- Food and Beverage$65.73 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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