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Angela Tsiperfal, NP

Nurse Practitioner · Stanford

NPI 1750581203

Medicare standing
1 flag on the record
Listed below.
Plans that list them
Not verified
Not the same as out of network.
Office
1
Since medical school
20 years
Graduated 2006

On the public record

  • California licence: Delinquent

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

California Medical Board record

Licence G17009 · Delinquent

Licence status: Delinquent · since 1969 · expires 2026-03-31 · George Washington University School of Medicine.

License renewal fee has not been paid. No practice is permitted.

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

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

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

$896

Medicare paid this office $896 for 19 people.

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

Who their Medicare patients are

19 Original Medicare patients in 2024. Average age 76 · Health risk score 1.85. Above the middle of the specialty; the typical nurse practitioner clinician is at 1.42.

Conditions among them: High blood pressure 75% · Atrial fibrillation 75% · Heart failure 74% · Coronary heart disease 68% · Chronic kidney disease 68%.

The office billed $90,709, Medicare allowed $1,120 and paid $896; for 19 services of 6 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
20241919761.85$90,709$896
20231516753.01$4,633$523
20223535752.82$20,002$1,211
20214145742.24$170,533$2,330
20205963762.11$364,113$3,895
201995104752.28$498,643$5,972
201884103752.00$403,245$5,523
2017103134742.05$354,892$6,701
2016129167761.57$323,135$7,937
2015136178741.93$222,030$10,234
2014104152741.62$76,787$7,945
2013117159741.30$100,814$9,392

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

2022: 1 service

Original Medicare services billed in 2022
Programming of dual lead pacemaker system19$572$30

2021: 2 services

Original Medicare services billed in 2021
External shock to heart to regulate heart beat14$1,226$88
Programming of dual lead pacemaker system13$428$31

2020: 2 services

Original Medicare services billed in 2020
External shock to heart to regulate heart beat32$2,748$86
Programming of dual lead pacemaker system12$374$29

2019: 3 services

Original Medicare services billed in 2019
External shock to heart to regulate heart beat45$3,905$87
Programming of dual lead pacemaker system28$845$30
Programming of multiple lead implantable defibrillator system14$645$46

2018: 2 services

Original Medicare services billed in 2018
External shock to heart to regulate heart beat39$3,430$84
Programming of dual lead pacemaker system26$772$29

2017: 4 services

Original Medicare services billed in 2017
External shock to heart to regulate heart beat41$3,426$80
Programming of dual lead pacemaker system31$910$29
Short return visit (20+ min)18$737$37
Programming of multiple lead implantable defibrillator system11$585$49

2016: 4 services

Original Medicare services billed in 2016
External shock to heart to regulate heart beat38$3,784$95
Short return visit (20+ min)46$1,668$35
New patient visit (15+ min)32$1,105$35
Programming of dual lead pacemaker system24$681$28

2015: 3 services

Original Medicare services billed in 2015
External shock to heart to regulate heart beat59$6,469$94
Short return visit (20+ min)49$1,800$33
Programming of dual lead pacemaker system19$594$30

2014: 3 services

Original Medicare services billed in 2014
External shock to heart to regulate heart beat40$4,695$94
Short return visit (20+ min)57$2,191$34
Programming of dual lead pacemaker system15$443$28

2013: 2 services

Original Medicare services billed in 2013
External shock to heart to regulate heart beat65$6,576$91
Short return visit (20+ min)53$2,197$34

Drugs they prescribed that Part D paid

$36,351

Pharmacies billed $36,351 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 121) in 2024. At or below the middle of the specialty; the typical nurse practitioner clinician is at 0%.

85 generic and fewer than 11 brand-name prescriptions · $36,351 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.

Largest Part D drug costs
Eliquis12$22,487$1,874
Jardiance13$12,103$931

Year by year

Part D prescribing by year
2024121None0% (0)None$36,351
2023120None0% (0)None$27,489
202214915NoneNone$25,144
202118318None11%$11,552
202015713NoneNone$11,930
2019167290% (0)None$23,045
201829354None36%$48,994
201731459None31%$48,244
201636693None38%$61,762
201526173NoneNone$38,608
201439185NoneNone$34,284
20135011282% (11)None$37,913

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

See the drugs prescribed each year

2023: 1 drug

Part D drugs prescribed in 2023
Eliquis18$20,498$1,139

2022: 3 drugs

Part D drugs prescribed in 2022
Eliquis32$21,655$677
Amiodarone15$289$19
Amlodipine Besylate13$63$5

2021: 5 drugs

Part D drugs prescribed in 2021
Eliquis18$9,491$527
Amiodarone21$222$11
Metformin20$67$3
Glipizide11$45$4
Sertraline14$24$2

2020: 3 drugs

Part D drugs prescribed in 2020
Eliquis16$8,697$544
Amiodarone15$138$9
Glipizide12$123$10

2019: 2 drugs

Part D drugs prescribed in 2019
Eliquis20$13,322$666
Amiodarone17$322$19

2018: 6 drugs

Part D drugs prescribed in 2018
Eliquis34$15,752$463
Xarelto16$10,754$672
Dofetilide19$5,910$311
Metoprolol14$448$32
Amiodarone25$393$16
Pravastatin13$243$19

2017: 11 drugs

Part D drugs prescribed in 2017
Xarelto22$15,532$706
Eliquis34$13,511$397
Dofetilide15$5,929$395
Symbicort11$3,396$309
Flecainide Acetate18$2,027$113
Ventolin Hfa11$583$53
Metoprolol35$547$16
Amiodarone20$169$8
Sertraline14$130$9
Cartia Xt11$125$11
Amlodipine Besylate13$75$6

2016: 11 drugs

Part D drugs prescribed in 2016
Tikosyn45$23,288$518
Xarelto48$21,554$449
Eliquis12$5,353$446
Flecainide Acetate38$1,380$36
Metoprolol30$568$19
Amiodarone26$289$11
Glipizide17$155$9
Cartia Xt11$131$12
Cephalexin15$82$5
Metoprolol15$79$5
Amlodipine Besylate13$36$3

2015: 7 drugs

Part D drugs prescribed in 2015
Multaq20$9,280$464
Xarelto19$8,912$469
Tikosyn22$7,787$354
Flecainide Acetate29$1,486$51
Amiodarone15$172$11
Glipizide14$100$7
Cephalexin15$79$5

2014: 16 drugs

Part D drugs prescribed in 2014
Xarelto20$9,717$486
Tikosyn21$6,452$307
Flecainide Acetate29$945$33
Metoprolol12$414$34
Diltiazem 24hr Er16$394$25
Amiodarone24$319$13
Diltiazem Er11$316$29
Amlodipine Besylate24$179$7
Sotalol13$169$13
Losartan12$162$13
Atenolol19$118$6
Metformin12$109$9
Cephalexin16$104$7
Metoprolol23$103$4
Warfarin11$72$7
Zolpidem11$52$5

2013: 18 drugs

Part D drugs prescribed in 2013
Xarelto34$8,741$257
Pradaxa19$8,137$428
Lovaza12$2,470$206
Diltiazem 24hr Er22$833$38
Flecainide Acetate26$698$27
Sucralfate12$424$35
Losartan15$343$23
Sotalol25$326$13
Amiodarone24$309$13
Pantoprazole20$296$15
Metoprolol11$294$27
Clindamycin11$266$24
Cephalexin35$254$7
Warfarin21$229$11
Amlodipine Besylate18$201$11
Metformin16$150$9
Metoprolol22$131$6
Hydrocodone-Acetaminophen11$41$4

Money from drug and device companies

$5,449 in 2024

Industry payments by year
2024223$2,452$5,449
202326$875$916
202222$1,225$1,376
202123$1,050$1,084

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

Payments by company
MedtronicNone$5,396
22 payments
  • Consulting · 2024-07-12 · $2,452
  • Travel · 2024-06-21 · $340
  • Travel · 2024-06-21 · $83
  • Travel · 2024-06-21 · $149
  • Travel · 2024-06-21 · $77
  • Travel · 2024-06-21 · $88
  • Meals · 2024-06-18 · $192
  • Meals · 2024-06-18 · $61
  • Meals · 2024-06-18 · $47
  • Meals · 2024-06-18 · $33
  • Meals · 2024-06-18 · $5
  • Meals · 2024-06-18 · $37
  • Meals · 2024-06-18 · $5
  • Meals · 2024-06-18 · $7
  • Meals · 2024-06-17 · $22
  • Travel · 2024-06-17 · $120
  • Travel · 2024-06-17 · $219
  • Travel · 2024-06-17 · $33
  • Travel · 2024-06-16 · $219
  • Travel · 2024-06-16 · $33
  • Travel · 2024-05-30 · $401
  • Travel · 2024-05-20 · $772
Abbott LaboratoriesAveir$53
1 payment
  • Meals for Aveir · 2024-03-13 · $53
See all 23 published payments
Every published payment
MedtronicConsulting · 2024-07-12None$2,452
MedtronicTravel · 2024-06-21None$340
MedtronicTravel · 2024-06-21None$83
MedtronicTravel · 2024-06-21None$149
MedtronicTravel · 2024-06-21None$77
MedtronicTravel · 2024-06-21None$88
MedtronicMeals · 2024-06-18None$192
MedtronicMeals · 2024-06-18None$61
MedtronicMeals · 2024-06-18None$47
MedtronicMeals · 2024-06-18None$33
MedtronicMeals · 2024-06-18None$5
MedtronicMeals · 2024-06-18None$37
MedtronicMeals · 2024-06-18None$5
MedtronicMeals · 2024-06-18None$7
MedtronicMeals · 2024-06-17None$22
MedtronicTravel · 2024-06-17None$120
MedtronicTravel · 2024-06-17None$219
MedtronicTravel · 2024-06-17None$33
MedtronicTravel · 2024-06-16None$219
MedtronicTravel · 2024-06-16None$33
MedtronicTravel · 2024-05-30None$401
MedtronicTravel · 2024-05-20None$772
Abbott LaboratoriesMeals · 2024-03-13Aveir$53
See earlier years (2023, 2022, 2021)

2023: $916

Payments by company in 2023
MedtronicMycarelink$552
3 payments
  • Education · 2023-09-14 · $27
  • Consulting for Mycarelink · 2023-07-06 · $175
  • Consulting · 2023-02-10 · $350
Abbott LaboratoriesConfirm Rx$364
3 payments
  • Consulting for Merlin@Home · 2023-09-26 · $175
  • Meals for Confirm Rx · 2023-02-06 · $14
  • Consulting for Confirm Rx · 2023-01-19 · $175

2022: $1,376

Payments by company in 2022
MedtronicNone$1,225
1 payment
  • Consulting · 2022-06-30 · $1,225
Boston ScientificWatchman Access System$151
1 payment
  • Meals for Watchman Access System · 2022-08-09 · $151

2021: $1,084

Payments by company in 2021
MedtronicNone$1,050
1 payment
  • Consulting · 2021-06-28 · $1,050
Janssen PharmaceuticalsXarelto$34
2 payments
  • Meals for Xarelto · 2021-11-01 · $13
  • Meals for Xarelto · 2021-03-31 · $21

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.

Research payments by company and study
Medtronic, Inc. · 2021This clinician$175

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
1750581203
Licence
CA 17009California G17009: Delinquent · expires 2026-03-31
Gender
Female
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 363LA2100X (363LA2100X)
Mailing address
300 Pasteur Dr # H2149, Stanford, CA, 94305
NPI first listed
2007-07-23
NPI last updated
2007-07-23

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