Danielle Bertoni, MD

3 locations · Bass Medical Group · 292 clinicians in this group

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

3 plans · 1 carrier

Licence A105375 · Current

Licensed to practise in California · since 2008 · expires 2028-07-31 · Umdnj New Jersey Medical School.

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

Surgery centers they own

• Bay Area Surgical Specialists Services, LLC DBA BASS Surgery CenterAmbulatory Surgery Center · Walnut Creek, CA0.21% owner since 2024 · accredited by AAAHC
  Initial Accreditation2 inspections, 2 with deficiencies · last 2025-06-27

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 Surgery - Surgery

2 hospitals

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

• 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

$63,620

Medicare paid this office $63,620 for 126 people.

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

Procedures Medicare counted

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

126 Original Medicare patients in 2024. Average age 74 · Health risk score 0.99. At or below the middle of the specialty; the typical surgical oncology clinician is at 1.48.

Conditions among them: Cancer 71% · High blood pressure 63% · Depression 29% · Diabetes 19% · Chronic kidney disease 18% · Coronary heart disease 17% · Atrial fibrillation 12% · COPD 9%.

The office billed $258,857, Medicare allowed $82,840 and paid $63,620; for 350 services of 23 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.

$62

Pharmacies billed $62 in 2024.

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

11 generic and fewer than 11 brand-name prescriptions · $62 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.

$2,748 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.

NPI

1780843185

Licence

CA A105375, CT 57058, OR MD199112California A105375: Current · expires 2028-07-31

Group

Bass Medical Group

Video visits

Lists video visits

Gender

Female