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Perin Ajay Kothari, DO

Anesthesiology · Stanford

NPI 1508243270

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Office
1
Since medical school
11 years
Graduated 2015

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 Dr. Kothari’s office at (650) 723-4000 to ask if they take your plan before you enroll.

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

$37,231

Medicare paid this office $37,231 for 70 people.

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

Largest Original Medicare bills
Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older)11$9,464$860
Anesthesia for procedure on heart and large blood vessels11$5,620$511
Anesthesia for x-ray or radiation therapy14$2,678$191
Ultrasound of heart with probe in esophagus, with report18$1,696$94
Insertion of non-tunneled central venous tube for infusion (5 years or older)15$1,081$72
See all 7 services
Every Original Medicare service billed
Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older)11$9,464$860
Anesthesia for procedure on heart and large blood vessels11$5,620$511
Anesthesia for x-ray or radiation therapy14$2,678$191
Ultrasound of heart with probe in esophagus, with report18$1,696$94
Insertion of non-tunneled central venous tube for infusion (5 years or older)15$1,081$72
Insertion of artery tube for blood sampling or infusion through skin28$1,053$38
Ultrasound of heart with color-depicted blood flow, rate and valve function16$44$3

Procedures year by year

Procedures billed to Original Medicare by year
Procedure20202021202220232024
Insertion of artery tube for blood sampling or infusion through skin3361473828
Insertion of non-tunneled central venous tube for infusion (5 years or older)3059251715

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

70 Original Medicare patients in 2024. Average age 73 · Women 43% · Health risk score 1.73. Above the middle of the specialty; the typical anesthesiology clinician is at 1.54.

Conditions among them: High blood pressure 75% · Atrial fibrillation 75% · Heart failure 74% · Coronary heart disease 71% · Chronic kidney disease 63% · Diabetes 40% · Depression 23% · COPD 21% · Cancer 17% · Stroke 16%.

The office billed $314,005, Medicare allowed $46,926 and paid $37,231; for 172 services of 24 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
202470172731.73$314,005$37,231
202386213751.64$366,693$44,751
202280246742.17$406,444$49,334
202198335722.19$579,591$59,622
202037158711.96$258,198$28,349

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

2023: 9 services

Original Medicare services billed in 2023
Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older)14$11,827$845
Anesthesia for procedure on heart and large blood vessels11$6,133$511
Anesthesia for x-ray or radiation therapy28$5,809$200
Ultrasound of heart with probe in esophagus, with report20$2,056$98
Insertion of artery tube for blood sampling or infusion through skin38$1,483$39
Anesthesia for procedure to correct abnormal heart rhythm11$1,320$120
Insertion of non-tunneled central venous tube for infusion (5 years or older)17$1,263$74
Ultrasound of heart blood flow, valves and chambers13$214$16
Ultrasound of heart with color-depicted blood flow, rate and valve function20$60$3

2022: 11 services

Original Medicare services billed in 2022
Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older)14$11,853$847
Anesthesia for procedure on heart and large blood vessels14$6,724$480
Anesthesia for x-ray on artery of brain, heart, or chest11$4,296$391
Anesthesia for x-ray or radiation therapy14$2,812$201
Ultrasound of heart with probe in esophagus, with report19$1,971$99
Insertion of non-tunneled central venous tube for infusion (5 years or older)21$1,845$74
Insertion of artery tube for blood sampling or infusion through skin46$1,810$39
Insertion of tube in pulmonary artery for monitoring14$1,077$77
Ultrasonic guidance for blood vessel access13$209$12
Ultrasound of heart blood flow, valves and chambers, follow-up16$104$7
Ultrasound of heart with color-depicted blood flow, rate and valve function19$57$3

2021: 10 services

Original Medicare services billed in 2021
Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older)13$10,312$793
Anesthesia for procedure on heart and large blood vessels18$8,803$489
Anesthesia for heart artery bypass grafting on heart-lung machine11$8,432$767
Insertion of non-tunneled central venous tube for infusion (5 years or older)32$4,441$75
Ultrasound of heart with probe in esophagus, with report34$3,399$100
Anesthesia for x-ray or radiation therapy14$2,400$171
Insertion of artery tube for blood sampling or infusion through skin57$2,361$39
Insertion of tube in pulmonary artery for monitoring18$1,401$78
Ultrasound of heart blood flow, valves and chambers, follow-up29$192$7
Ultrasound of heart with color-depicted blood flow, rate and valve function34$99$3

2020: 6 services

Original Medicare services billed in 2020
Insertion of non-tunneled central venous tube for infusion (5 years or older)16$2,308$77
Ultrasound of heart with probe in esophagus, with report16$1,635$102
Insertion of artery tube for blood sampling or infusion through skin30$1,320$40
Insertion of tube in pulmonary artery for monitoring12$955$80
Ultrasound of heart blood flow, valves and chambers, follow-up13$89$7
Ultrasound of heart with color-depicted blood flow, rate and valve function16$48$3

Money from drug and device companies

$212 in 2022

A payment is not proof that care is biased.

Payments by company
Edwards LifesciencesEdwards Sapien 3 Ultra Transcatheter Heart Valve$212
1 payment
  • Meals for Edwards Sapien 3 Ultra Transcatheter Heart Valve · 2022-10-19 · $212
See the published payment
Every published payment
Edwards LifesciencesMeals · 2022-10-19Edwards Sapien 3 Ultra Transcatheter Heart Valve$212

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
1508243270
Licence
CA 20A17071
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 207L00000X (207L00000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2015-05-01
NPI last updated
2024-04-11
NPI record certified
2024-04-11

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