Matthew Charles Baker, MD
NPI 1518252204ActiveIndividual· Internal Medicine, Rheumatology· Stanford, CA
Internal Medicine, Rheumatology (MD) in Stanford, California, trained at Harvard Medical School (class of 2011). Their prescriptions cost Medicare Part D more than their services did: $1,076,253 for 443 claims, against $25,884 paid for services in 2024. Argenx US, Inc. was the largest of 4 companies reporting payments in 2025, $25,981 in all, mostly consulting fees.
Overview
| NPI | 1518252204 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 10, 2011 |
| Last updated in NPPES | Apr 15, 2024 |
| Certified by provider | Apr 15, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | A129608 | CA |
| Internal Medicine | 207R00000X | A129608 | 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 | 159 |
|---|---|
| Services billed | 378 across 12 procedure codes |
| Paid by Medicare | $25,884 |
Part D prescriptions in 2024
| Prescriptions (claims) | 443 · 878 30-day fills |
|---|---|
| Patients | 84 |
| Total drug cost | $1,076,253 |
| Generic share | 73% of claims |
Education and affiliations
| Medical school | Harvard Medical School |
|---|---|
| Graduation year | 2011 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Rheumatology |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliation
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$25,981 · 24 payments from 4 companies
- 2024$13,272 · 5 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Argenx US, Inc. | $10,150 | 10 |
| Neurocrine Biosciences, Inc. | $7,800 | 7 |
| Amgen Inc. | $6,632 | 6 |
| Eli Lilly and Company | $1,400 | 1 |
What the 2025 payments were for
- Consulting Fee$24,495 · 13 payments
- Travel and Lodging$893.99 · 5 payments
- Food and Beverage$592.86 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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