Spencer Michael Chang, MD
NPI 1275160368ActiveIndividual· Internal Medicine· Stanford, CA
Internal Medicine (MD) in Stanford, California, trained at Duke University School of Medicine (class of 2020). Their prescriptions cost Medicare Part D more than their services did: $97,659 for 1,135 claims, against $44,768 paid for services in 2024. Regeneron Healthcare Solutions, Inc. was the largest of 2 companies reporting payments in 2024, $1,591 in all, mostly consulting fees.
Overview
| NPI | 1275160368 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Mar 26, 2020 |
| Last updated in NPPES | Apr 18, 2024 |
| Certified by provider | Apr 18, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A185888 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 291 |
|---|---|
| Services billed | 747 across 16 procedure codes |
| Paid by Medicare | $44,768 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,135 · 2,463 30-day fills |
|---|---|
| Patients | 189 |
| Total drug cost | $97,659 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | Duke University School of Medicine |
|---|---|
| Graduation year | 2020 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliations
- Sequoia HospitalRedwood City, CA
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2024$1,591 · 3 payments from 2 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Regeneron Healthcare Solutions, Inc. | $1,456 | 2 |
| Phathom Pharmaceuticals, Inc. | $135.00 | 1 |
What the 2024 payments were for
- Consulting Fee$1,456 · 2 payments
- Food and Beverage$135.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 394 internal medicine physicians in Stanford · All internal medicine physicians in California