Mark Tu, MD

5 locations · Bay Imaging Consultants Medical Group Inc · John Muir Magnetic Imaging Center · County of Santa Clara · John Muir Trauma Physicians Billing Service

Hospitals listed: Good Samaritan Hospital · John Muir Medical Center - Concord Campus · John Muir Medical Center - Walnut Creek Campus · San Ramon Regional Medical Center. That is not proof they admit you there this week.

Licence A60238 · Current

Licensed to practise in California · since 1996 · expires 2027-12-31 · University of Texas Medical Branch at Galveston.

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 Radiology - Diagnostic Radiology

4 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
• John Muir Medical Center - Concord CampusConcord, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of John Muir Health, which runs 3 hospitalsPatients rate it 3 of 5 · 77% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.235, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.675, Oct 2024 – Sep 2025
• John Muir Medical Center - Walnut Creek CampusWalnut Creek, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of John Muir Health, which runs 3 hospitalsPatients rate it 3 of 5 · 77% would definitely recommend it
  Overall rating: 2 of 5 starsWorse than the national rate — Abdominopelvic accidental puncture or laceration rate: 2.01 (1.17 to 2.85) · 2,206 cases, Jul 2022 – Jun 2024Worse than the national rate — Death rate among surgical inpatients with serious treatable complications: 222.42 (177.82 to 267.02) · 120 cases, Jul 2022 – Jun 2024Worse than the national rate — Pressure ulcer rate: 1.4 (0.91 to 1.9) · 9,764 cases, Jul 2022 – Jun 2024Worse than the national rate — SSI - Colon Surgery: 2.734, Oct 2024 – Sep 2025Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.536, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.341, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.455, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.245, Oct 2024 – Sep 2025
• San Ramon Regional Medical CenterSan Ramon, CAAcute Care Hospital · Proprietary · Has an emergency department · Birthing-friendlyPart of Tenet Healthcare, which runs 77 hospitals in 12 statesPatients rate it 3 of 5 · 65% would definitely recommend it
  Overall rating: 4 of 5 starsNo measure marked better or worse than the national rate

$250,141

Medicare paid this office $250,141 for 4,418 people.

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

Procedures year by year

Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.

Who their Medicare patients are

4,418 Original Medicare patients in 2024. Average age 76 · Under 65 7% · 85 and older 20% · Women 67% · Also on Medicaid 29% · Health risk score 1.79. Above the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.

Conditions among them: High blood pressure 75% · Chronic kidney disease 35% · Diabetes 34% · Coronary heart disease 30% · Depression 30% · Atrial fibrillation 27% · Heart failure 26% · COPD 21% · Cancer 20% · Stroke 18% · Dementia 17%.

The office billed $1,446,348, Medicare allowed $301,122 and paid $250,141; for 6,818 services of 142 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.

$19,737 in 2024

Medicaid paid $19,737 for 1,054 billed services this clinician did in 2024, up to 62 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.

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

Opioids were 0% of their 43 Part D prescriptions in 2022. Too few prescriptions to judge: with under about 50 a year, a handful of patients can swing this share.

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

Year by year

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

$35 in 2025

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Medicare did not publish checkup rates for this clinician.

NPI

1144262452

Licence

CA A60238California A60238: Current · expires 2027-12-31

Trained

University of Texas Medical Branch at Galveston, 1994 · 32 years ago

Group

Bay Imaging Consultants Medical Group Inc · John Muir Magnetic Imaging Center · County of Santa Clara · John Muir Trauma Physicians Billing Service

Gender

Male