Vijay Viswanathan

9 locations · Bayhealth Radiologists LLC · Magnetic Imaging Affiliates LLC · County of Santa Clara · John Muir Trauma Physicians Billing Service · John Muir Magnetic Imaging Center · Lenox Hill Radiology and Medical Imaging Associates PC · Bay Imaging Consultants Medical Group Inc

Hospitals listed: Alta Bates Summit Medical Center · Bayhealth Hospital, Sussex Campus · Eden Medical Center · John Muir Medical Center - Concord Campus · John Muir Medical Center - Walnut Creek Campus. That is not proof they admit you there this week.

1 licence

• Delaware C1-0009394Physician M.D. · since 2010 · expires 2027-03-31
  ActiveNo 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.

5 hospitals

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

• Alta Bates Summit Medical CenterOakland, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 78% would definitely recommend it
  Overall rating: 5 of 5 starsBetter than the national rate — Death rate among surgical inpatients with serious treatable complications: 130.09 (87.72 to 172.46) · 109 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.274, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.227, Oct 2024 – Sep 2025
• Bayhealth Hospital, Sussex CampusMilford, DEAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Bayhealth, which runs 2 hospitalsPatients rate it 4 of 5 · 73% would definitely recommend it
  Overall rating: 3 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.235, Oct 2024 – Sep 2025
• Eden Medical CenterCastro Valley, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of Sutter Health, which runs 27 hospitals in 2 statesPatients rate it 3 of 5 · 75% would definitely recommend it
  Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.122, 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

$125,753

Medicare paid this office $125,753 for 2,641 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

2,641 Original Medicare patients in 2024. Average age 75 · Under 65 10% · 85 and older 18% · Women 54% · Also on Medicaid 34% · Health risk score 2.08. Above the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.

Conditions among them: High blood pressure 75% · Diabetes 40% · Chronic kidney disease 39% · Coronary heart disease 37% · Heart failure 32% · Atrial fibrillation 32% · Depression 30% · COPD 27% · Cancer 24% · Stroke 21% · Dementia 17%.

The office billed $923,480, Medicare allowed $160,057 and paid $125,753; for 6,498 services of 125 kinds; $756 of it was for drugs given in the office and $124,997 for care.

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.

$27,044 in 2024

Medicaid paid $27,044 for 972 billed services this clinician did in 2024, up to 32 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 12 Part D prescriptions in 2020. 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