Carol M Marquez, MD

1 location · Stanford Health Care · 3,152 clinicians in this group

Hospitals listed: Good Samaritan Hospital · Stanford Health Care. That is not proof they admit you there this week.

17 plans · 3 carriers

Licence G64905 · Current

Licensed to practise in California · since 2015 · expires 2027-04-30 · University of California San Francisco School of Medicine.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

1 licence

• Washington MD.MD.00034102Physician And Surgeon License · since 1996 · expires 2017-04-28
  ExpiredNo board action on this licenceCheck it with the state

We check Colorado, Delaware, Florida, Illinois, Maryland, New Jersey, New York, Tennessee, Texas, Virginia, Washington, plus California above. A state that is not in this list has not been checked, which is not the same as clear.

What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.

Specialty certification

• American Board of Radiology - Radiation Oncology

2 hospitals

These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.

• Good Samaritan HospitalSan Jose, CAAcute Care Hospital · Proprietary · Has an emergency department · Birthing-friendlyPart of HCA Healthcare, which runs 185 hospitals in 19 statesPatients rate it 2 of 5 · 67% would definitely recommend it
  Overall rating: 2 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.337, Oct 2024 – Sep 2025
• Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend it
  Overall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024

$160,790

Medicare paid this office $160,790 for 474 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Who their Medicare patients are

474 Original Medicare patients in 2024. Average age 74 · Under 65 3% · 85 and older 8% · Women 70% · Also on Medicaid 19% · Health risk score 1.57. At or below the middle of the specialty; the typical radiation oncology clinician is at 1.69.

Conditions among them: Cancer 75% · High blood pressure 69% · Diabetes 26% · Coronary heart disease 23% · Chronic kidney disease 23% · Depression 19% · Atrial fibrillation 15% · Heart failure 13% · COPD 11% · Stroke 10% · Dementia 5%.

The office billed $2,101,208, Medicare allowed $204,648 and paid $160,790; for 2,486 services of 28 kinds.

Original Medicare patients only. A risk score of 1.0 is the average Medicare patient; higher means sicker. Any count under 11 is hidden.

Year by year

Original Medicare only. A service billed for fewer than 11 people in a year is hidden, so the lines can add up to less than the year's total.

$961 in 2024

Medicaid paid $961 for 60 billed services this clinician did in 2024, up to 12 people in a month for one service.

Medicaid and CHIP claims where this clinician did the service, fee-for-service and managed care together. Any month with fewer than 11 patients is hidden, so small Medicaid practices undercount.

$1,695

Pharmacies billed $1,695 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

110 generic and fewer than 11 brand-name prescriptions · $1,695 in drug cost.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

Year by year

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

$147 in 2025

A payment is not proof that care is biased.

NPI

1568478014

Licence

CA G64905, OR MD18221, WA MD00034102California G64905: Current · expires 2027-04-30Washington MD.MD.00034102: Expired

Trained

University of California, San Francisco School of Medicine, 1987 · 39 years ago

Group

Stanford Health Care

Video visits

Lists video visits

Gender

Female