James L Zehnder, MD

2 locations · Stanford Health Care · 3,152 clinicians in this group

Hospitals listed: Alta Bates Summit Medical Center - Alta Bates Camp · Dominican Hospital · Stanford Health Care · Stanford Health Care Tri-Valley. That is not proof they admit you there this week.

Licence G56192 · Current

Licensed to practise in California · since 1985 · expires 2027-04-30 · Tufts University School of Medicine.

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

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 Internal Medicine - Hematology

4 hospitals

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

• Alta Bates Summit Medical Center - Alta Bates CampBerkeley, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 2 of 5 · 67% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.298, Oct 2024 – Sep 2025
• Dominican HospitalSanta Cruz, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of CommonSpirit Health, which runs 145 hospitals in 19 statesPatients rate it 4 of 5 · 68% would definitely recommend it
  Overall rating: 4 of 5 starsWorse than the national rate — Postoperative sepsis rate: 11.66 (8.02 to 15.3) · 412 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.168, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.169, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.489, 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
• Stanford Health Care Tri-ValleyPleasanton, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Stanford Health Care, which runs 3 hospitalsPatients rate it 3 of 5 · 74% would definitely recommend it
  Overall rating: 5 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.178, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.237, Oct 2024 – Sep 2025

$66,428

Medicare paid this office $66,428 for 1,144 people.

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

Who their Medicare patients are

1,144 Original Medicare patients in 2024. Average age 75 · Under 65 6% · 85 and older 12% · Women 48% · Also on Medicaid 20% · Health risk score 1.81. Above the middle of the specialty; the typical pathology clinician is at 1.55.

Conditions among them: High blood pressure 72% · Cancer 38% · Diabetes 31% · Coronary heart disease 31% · Chronic kidney disease 31% · Atrial fibrillation 22% · Heart failure 19% · Depression 18% · COPD 17% · Stroke 10% · Dementia 8%.

The office billed $209,215, Medicare allowed $83,747 and paid $66,428; for 1,554 services of 7 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.

$4,876 in 2024

Medicaid paid $4,876 for 282 billed services this clinician did in 2024, up to 57 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.

$2,950 in 2024

A payment is not proof that care is biased.

Medicare did not publish checkup rates for this clinician.

NPI

1669508826

Licence

CA G55192, CA G56192California G56192: Current · expires 2027-04-30

Trained

Tufts University School of Medicine, 1984 · 42 years ago

Group

Stanford Health Care

Video visits

Lists video visits

Gender

Male