Nathan Charles Karp, MD

5 locations · UCSF Medical Group Business Services · University of California San Francisco · Regents of the University of California

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

15 plans · 2 carriers

Licence A165847 · Current

Licensed to practise in California · since 2019 · expires 2027-10-31 · University of California San Francisco School of Medicine.

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

$60,036

Medicare paid this office $60,036 for 173 people.

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

Who their Medicare patients are

173 Original Medicare patients in 2024. Average age 76 · Women 60% · Also on Medicaid 11% · Health risk score 0.96. At or below the middle of the specialty; the typical rheumatology clinician is at 1.38.

Conditions among them: High blood pressure 63% · Diabetes 25% · Coronary heart disease 24% · Chronic kidney disease 19% · Cancer 14% · Depression 12% · Heart failure 9% · Atrial fibrillation 9%.

The office billed $242,946, Medicare allowed $78,786 and paid $60,036; for 3,106 services of 22 kinds; $9,284 of it was for drugs given in the office and $50,752 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.

$172,373

Pharmacies billed $172,373 in 2024.

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

297 generic and 36 brand-name prescriptions · $172,373 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.

$42 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

1134623556

Licence

CA A165847California A165847: Current · expires 2027-10-31

Trained

University of California, San Francisco School of Medicine, 2018

Group

UCSF Medical Group Business Services · University of California San Francisco · Regents of the University of California

Video visits

Lists video visits

Gender

Male