Carol Madellaine Marquez, MD
NPI 1568478014ActiveIndividual· Radiology, Radiation Oncology· Stanford, CA
Radiology, Radiation Oncology (MD) in Stanford, California, trained at University of California, San Francisco School of Medicine (class of 1987). 474 Medicare patients in 2024, $160,790 paid; nearly all of their 113 Part D prescriptions were generic (97%). Abbvie Inc. reported $146.56 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1568478014 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 1, 2006 |
| Last updated in NPPES | Jul 6, 2015 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Radiology, Radiation Oncology Primary | 2085R0001X | G64905 | CA |
| Radiology, Radiation Oncology | 2085R0001X | MD18221 | OR |
| Radiology, Radiation Oncology | 2085R0001X | MD00034102 | WA |
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 - Radiation Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 474 |
|---|---|
| Services billed | 2,486 across 28 procedure codes |
| Paid by Medicare | $160,790 |
Part D prescriptions in 2024
| Prescriptions (claims) | 113 · 125 30-day fills |
|---|---|
| Patients | 77 |
| Total drug cost | $1,695 |
| Generic share | 97% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Radiation Oncology |
| Telehealth | Offers telehealth |
Medical group
- Stanford Health CareStanford, CA · 3,122 clinicians
Hospital affiliations
- Good Samaritan HospitalSan Jose, CA
- Stanford Health CareStanford, CA
Industry payments (Open Payments)
- 2025$146.56 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $146.56 | 1 |
What the 2025 payments were for
- Food and Beverage$146.56 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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