Geoffrey Alexander Sonn, MD

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

Hospitals listed: Community Hospital of the Monterey Peninsula · Stanford Health Care. That is not proof they admit you there this week.

17 plans · 3 carriers

Licence A96537 · Current

Licensed to practise in California · since 2006 · expires 2028-05-31 · University of California, Los Angeles School of Medicine.

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

2 hospitals

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

• Community Hospital of the Monterey PeninsulaMonterey, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of Montage HealthPatients rate it 4 of 5 · 84% would definitely recommend it
  Overall rating: 4 of 5 starsWorse than the national rate — CMS Medicare PSI 90: Patient safety and adverse events composite: 1.48 (1.22 to 1.74), Jul 2022 – Jun 2024Worse than the national rate — Postoperative acute kidney injury requiring dialysis rate: 3.12 (1.69 to 4.56) · 1,095 cases, Jul 2022 – Jun 2024Worse than the national rate — Postoperative respiratory failure rate: 19.24 (14.17 to 24.3) · 1,118 cases, Jul 2022 – Jun 2024Worse than the national rate — Postoperative sepsis rate: 9.62 (6.42 to 12.82) · 1,086 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.39, 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

$114,430

Medicare paid this office $114,430 for 417 people.

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

Procedures Medicare counted

Who their Medicare patients are

417 Original Medicare patients in 2024. Average age 73 · Women 4% · Also on Medicaid 6% · Health risk score 0.84. At or below the middle of the specialty; the typical urology clinician is at 1.36.

Conditions among them: Cancer 75% · High blood pressure 61% · Coronary heart disease 26% · Chronic kidney disease 19% · Diabetes 18% · Atrial fibrillation 18% · Heart failure 9% · Depression 6% · COPD 4% · Stroke 4%.

The office billed $1,211,329, Medicare allowed $150,598 and paid $114,430; for 637 services of 29 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.

$1,238

Pharmacies billed $1,238 in 2024.

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

Opioids were 0% of their Part D prescriptions (0 of 29) in 2024. Too few prescriptions to compare fairly with other clinicians.

28 generic and fewer than 11 brand-name prescriptions · $1,238 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.

$14 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.

Research money

Money a company paid to run a study. Where it went to their institution, the clinician is named as an investigator and did not receive it; the amount covers the whole study, often across many sites.

Medicare did not publish checkup rates for this clinician.

NPI

1275720351

Licence

CA A96537California A96537: Current · expires 2028-05-31

Trained

University of California, Geffen School of Medicine, 2005

Group

Stanford Health Care

Video visits

Lists video visits

Gender

Male