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Irene H Kwon, PA

Physician Assistant · Stanford

NPI 1992980221

Medicare standing
2 flags on the record
Listed below.
Plans that list them
Not verified
Not the same as out of network.
Office
1
Since medical school
19 years
Graduated 2007

On the public record

  • California licence: Revoked
  • 2 Medical Board actions on record

Offices

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

Looking this up.

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

Plan participation

Not verified

We could not verify current plan participation for this doctor. This does not mean they are out of network. Call Irene H Kwon’s office at (650) 723-4000 to ask if they take your plan before you enroll.

California Medical Board record

Licence G58657 · Revoked

Licence status: Revoked · since 1986 · Loma Linda University School of Medicine. Board flags: Revoked.

License has been revoked as a result of disciplinary action rendered by the Board. No practice is permitted.

Matched on the licence number without its letter prefix; check the name before relying on it.

Public record actions

Actions the Medical Board of California publishes for this licence
2004-01-07Board disciplineDisciplineRevoked. · 16 2003147634
2003-05-27Action in another state or by a federal agencyDisciplineEffective 05/27/03 montana board immediately suspended dr. russell's medical license. · Montana board of medical examiners

Hospitals they work in

1 hospital

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

  • 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
See every measure and the patient survey for Stanford Health Care

Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Stanford Health Care
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths5.31 (4.24 to 6.37) · 8,661 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits14.1 (12.7 to 15.7) · 2,191 casesWorseJan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths4.08 (1.95 to 6.21) · 5,296 casesBetterJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.317BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.446BetterOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.241BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.7 (0.6 to 0.9) · 3,348 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.06 (0.45 to 1.67) · 5,374 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.86 (0.72 to 1)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths166.09 (137.88 to 194.3) · 470 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.1 · 192 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.4 · 146 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths9.7 · 253 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.3 · 880 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 935 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.7 · 501 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.1 · 7,730 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.13 (0 to 0.27) · 20,799 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.28 (0.14 to 0.43) · 23,182 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.94 (0.2 to 1.68) · 5,694 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.36 (1.54 to 3.19) · 7,846 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.2 (3.76 to 6.64) · 5,603 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.38 (0.23 to 2.53) · 2,211 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.52 (0.21 to 0.83) · 19,915 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.6 · 416 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.869No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.857No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.368No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16.2 · 247 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.5 · 1,021 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits47.8 · 258 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-1.6 · 990 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits20.8 · 976 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.5 · 959 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.2 (4.4 to 6.2) · 2,191 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.1 · 425 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.6 · 158 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.6 · 183 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.7 (10.4 to 15.4) · 4,578 casesNo differentJan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

Patient survey stars by topic at Stanford Health Care
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at Stanford Health Care
Room was "always" clean75%
Nurses "always" communicated well82%
Doctors "always" communicated well81%
Staff "always" explained63%
Yes, staff "did" give patients this information89%
Yes, staff "did" give patients information about help after discharge89%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)79%
Staff "always" explained new medications76%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect88%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital83%
Staff "always" explained possible side effects50%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$863

Medicare paid this office $863 for 14 people.

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

Procedures year by year

Procedures billed to Original Medicare by year
Procedure201620182019202020232024
Injection of chemical agent into single incompetent vein of leg using ultrasound guidance–2322–––

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

14 Original Medicare patients in 2024. Average age 75 · Under 65 0% · Health risk score 3.54. Sicker patients than 9 in 10 peers; the typical physician assistant clinician is at 1.31.

Conditions among them: High blood pressure 75%.

The office billed $60,241, Medicare allowed $1,154 and paid $863; for 14 services of 5 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 by year
20241414753.54$60,241$863
20231517702.44$74,142$1,100
202070107733.06$41,890$10,869
2019179367742.56$206,766$55,657
2018134217752.29$148,807$42,600
2016111220731.76$278,910$57,530
201531125691.68$539,682$11,712
201483342711.18$1,447,407$31,786
201396396691.53$1,675,735$37,597

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.

See the services billed each year

2020: 2 services

Original Medicare services billed in 2020
Return visit (30+ min)25$2,144$71
Short return visit (20+ min)32$2,071$51

2019: 6 services

Original Medicare services billed in 2019
Injection of chemical agent into single incompetent vein of leg using ultrasound guidance11$24,031$1,092
Return visit (30+ min)86$10,883$77
Short return visit (20+ min)69$4,454$51
New patient visit (45+ min)30$3,245$108
New patient visit (30+ min)14$1,012$72
Short return visit28$866$30

2018: 5 services

Original Medicare services billed in 2018
Injection of chemical agent into single incompetent vein of leg using ultrasound guidance12$25,945$1,128
Return visit (30+ min)55$5,823$77
Short return visit (20+ min)56$3,286$51
New patient visit (30+ min)17$1,326$78
New patient visit (45+ min)11$1,304$119

2016: 3 services

Original Medicare services billed in 2016
Return visit (30+ min)56$5,381$75
Short return visit (20+ min)42$2,802$52
New patient visit (45+ min)13$1,544$119

2015: 1 service

Original Medicare services billed in 2015
Insertion of spinal instrumentation for spinal stabilization13$1,222$51

2014: 9 services

Original Medicare services billed in 2014
Fusion of upper spine bone with removal of disc and release of spinal cord or nerve, 1 disc15$3,393$212
Partial removal of spine bone with re-exploration, release of lower spinal cord or nerves and/or removal of disc, 1 interspace20$2,718$129
Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment19$2,644$132
Insertion of spinal instrumentation for spinal stabilization25$2,388$51
Placement of stabilizing device to front, 2-3 spine bone segments11$1,106$92
Treatment of broken or dislocated spine bone, each additional segment12$669$35
Partial removal of spine bone with re-exploration, release of upper or lower spinal cord or nerves and/or removal of disc, each additional interspace12$647$32
Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment12$372$27
Use of operating microscope11$299$27

2013: 13 services

Original Medicare services billed in 2013
Removal of skull bone for aspiration of blood accumulation in upper brain outside or below brain membrane13$3,778$252
Fusion of upper spine bone with removal of disc and release of spinal cord or nerve, 1 disc16$3,398$212
Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment27$3,257$121
Insertion of spinal instrumentation for spinal stabilization32$2,867$50
Partial removal of spine bone with re-exploration, release of lower spinal cord or nerves and/or removal of disc, 1 interspace23$2,557$107
Removal of growth of lower spine bone outside spine membrane11$2,140$153
Placement of stabilizing device to front, 2-3 spine bone segments15$1,376$92
Treatment of broken or dislocated upper spine bone12$1,198$100
Incision or removal of lower spine bone segment11$1,078$98
Treatment of broken or dislocated spine bone, each additional segment17$803$35
Fusion of upper spine bone with removal of disc and release of spinal cord or nerve, each additional disc12$726$48
Partial removal of spine bone with re-exploration, release of upper or lower spinal cord or nerves and/or removal of disc, each additional interspace12$518$32
Use of operating microscope14$458$27

Drugs they prescribed that Part D paid

$2,666

Pharmacies billed $2,666 in 2024.

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

38 generic and fewer than 11 brand-name prescriptions · $2,666 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 prescribing by year
20244226NoneNone$2,666
20234922NoneNone$10,125
20224618NoneNone$24,606
20214926NoneNone$3,226
20201912NoneNone$1,144
20192316NoneNone$638
201826None0% (0)42%$3,665
20174816None35%$5,284
20166127None20%$4,750
20152918None0%$817
201414NoneNone0%$555
20132114NoneNone$524

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2019: 1 drug

Part D drugs prescribed in 2019
Clopidogrel18$235$13

2018: 2 drugs

Part D drugs prescribed in 2018
Zontivity11$3,504$319
Clopidogrel15$161$11

2017: 2 drugs

Part D drugs prescribed in 2017
Zontivity17$5,003$294
Clopidogrel21$183$9

2016: 2 drugs

Part D drugs prescribed in 2016
Zontivity12$4,132$344
Clopidogrel31$503$16

Money from drug and device companies

$32 in 2023

A payment is not proof that care is biased.

Payments by company
Merck Sharp & DohmeKeytruda$32
1 payment
  • Meals for Keytruda · 2023-08-28 · $32
See the published payment
Every published payment
Merck Sharp & DohmeMeals · 2023-08-28Keytruda$32

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
76.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1992980221
Licence
CA 58657, NC 0010-01191California G58657: Revoked
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Physician assistant (363A00000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2008-01-06
NPI last updated
2020-12-22
NPI record certified
2020-12-22

This is when the NPI record was last certified, not a medical board exam.