Justin Ahn, MD

2 locations · University of California San Francisco · UCSF Medical Group Business Services

Hospitals listed: UCSF Medical Center. That is not proof they admit you there this week.

12 plans · 2 carriers

Licence A160202 · Current

Licensed to practise in California · since 2019 · expires 2027-01-31 · University of Texas Southwestern Medical Center, Southwestern Medical School.

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

1 hospital

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

• UCSF Medical CenterSan Francisco, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of University of California Health, which runs 12 hospitalsHome of UCSF Helen Diller Family Comprehensive Cancer Center, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 81% would definitely recommend it
  Overall rating: 4 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 4.9 (3.79 to 6.02) · 7,590 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 12.8 (11.3 to 14.4) · 2,019 cases, Jan 2024 – Dec 2024Better than the national rate — Death rate among surgical inpatients with serious treatable complications: 139.4 (110.22 to 168.58) · 452 cases, Jul 2022 – Jun 2024Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.622, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.626, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.491, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.8 (0.7 to 1) · 2,336 cases, Jan 2024 – Dec 2024

$179,678

Medicare paid this office $179,678 for 281 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

281 Original Medicare patients in 2024. Average age 74 · Under 65 7% · 85 and older 9% · Women 17% · Also on Medicaid 17% · Health risk score 1.38. Above the middle of the specialty; the typical urology clinician is at 1.36.

Conditions among them: High blood pressure 74% · Diabetes 28% · Coronary heart disease 28% · Chronic kidney disease 27% · Cancer 21% · Atrial fibrillation 20% · Depression 16% · Heart failure 14% · COPD 10% · Stroke 9% · Dementia 7%.

The office billed $1,287,800, Medicare allowed $232,670 and paid $179,678; for 1,944 services of 77 kinds; $2,066 of it was for drugs given in the office and $177,612 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.

$919 in 2024

Medicaid paid $919 for 12 billed services this clinician did in 2024, up to 12 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.

$40,931

Pharmacies billed $40,931 in 2024.

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

369 generic and fewer than 11 brand-name prescriptions · $40,931 in drug cost · 63 antibiotic prescriptions to 35 people.

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.

$1,138 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

1063755148

Licence

CA A160202California A160202: Current · expires 2027-01-31

Trained

University of Texas Southwestern Medical School at Dallas, 2013 · 13 years ago

Group

University of California San Francisco · UCSF Medical Group Business Services

Video visits

Lists video visits

Gender

Male