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Anna Juche Chen Arroyo, MD

Allergy/Immunology · Stanford

NPI 1205102472

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
9
1 carrier
Offices
3

Offices

3 locations · 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.

Plans that list them

9 plans · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Arroyo’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

Plans whose provider directory lists this clinician
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026

California Medical Board record

Licence A126642 · Current

Licensed to practise in California · since 2013 · expires 2027-07-31 · Stanford University School of Medicine.

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

$7,967

Medicare paid this office $7,967 for 32 people.

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

Largest Original Medicare bills
Return visit (30+ min)17$2,146$113

Who their Medicare patients are

32 Original Medicare patients in 2024. Average age 70 · Health risk score 1.44. Sicker patients than 9 in 10 peers; the typical allergy/ immunology clinician is at 1.

Conditions among them: High blood pressure 53%.

The office billed $35,940, Medicare allowed $10,440 and paid $7,967; for 223 services of 14 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
202432223701.44$35,940$7,967
202328331720.89$45,628$8,015
202243207661.22$56,596$10,416
202157360701.32$93,998$19,185
202052527691.52$80,687$14,831
201917190681.09$22,194$3,967

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: 2 services

Original Medicare services billed in 2023
Return visit (30+ min)12$1,351$113
Telehealth originating site facility fee20$471$21

2022: 3 services

Original Medicare services billed in 2022
Long return visit (40+ min)12$2,039$146
Return visit (30+ min)13$1,945$114
Telehealth originating site facility fee39$1,058$21

2021: 5 services

Original Medicare services billed in 2021
Long return visit (40+ min)16$3,895$177
New patient visit (60+ min)17$3,497$206
Return visit (30+ min)22$2,859$110
New patient visit (45+ min)14$2,231$159
Telehealth originating site facility fee52$1,832$22

2020: 3 services

Original Medicare services billed in 2020
New patient visit (45+ min)30$4,079$136
Return visit (30+ min)21$3,267$102
Telehealth originating site facility fee36$1,002$21

2019: 1 service

Original Medicare services billed in 2019
New patient visit (45+ min)13$1,961$151

Medicaid work

$1,282 in 2022

Medicaid paid $1,282 for 44 billed services this clinician did in 2022, up to 17 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.

Largest Medicaid services in 2022
Telehealth originating site facility fee44$1,282
Medicaid work by year
202244117$1,282
202174118$2,130
2020104222$3,550
See the largest Medicaid services in earlier years

2021

Largest Medicaid services in 2021
Telehealth originating site facility fee74$2,130

2020

Largest Medicaid services in 2020
Telehealth originating site facility fee86$2,852
Return visit (30+ min)18$698

Drugs they prescribed that Part D paid

$34,370

Pharmacies billed $34,370 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 108) in 2024. At or below the middle of the specialty; the typical allergy/ immunology clinician is at 0%.

65 generic and 43 brand-name prescriptions · $34,370 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
Trelegy Ellipta12$7,683$640
Azelastine18$805$45
Levocetirizine Dihydrochloride12$191$16

Year by year

Part D prescribing by year
2024108270% (0)40%$34,370
202373220% (0)45%$17,424
2022111340% (0)44%$59,690
2021110320% (0)35%$69,946
2020126340% (0)26%$25,286
201919None0% (0)None$1,992
201799400% (0)33%$25,822
201651300% (0)43%$12,422

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

See the drugs prescribed each year

2023: 2 drugs

Part D drugs prescribed in 2023
Azelastine15$714$48
Levocetirizine Dihydrochloride12$416$35

2022: 3 drugs

Part D drugs prescribed in 2022
Symbicort15$7,819$521
Epinephrine11$1,933$176
Azelastine16$740$46

2021: 4 drugs

Part D drugs prescribed in 2021
Xolair12$54,230$4,519
Azelastine18$708$39
Ipratropium17$536$32
Fluticasone Propionate16$177$11

2020: 3 drugs

Part D drugs prescribed in 2020
Azelastine31$1,353$44
Ipratropium14$723$52
Fluticasone Propionate21$369$18

2017: 3 drugs

Part D drugs prescribed in 2017
Cromolyn17$18,548$1,091
Ranitidine15$264$18
Montelukast20$244$12

Money from drug and device companies

$15 in 2023

Industry payments by year
202311None$15
202211None$14
202111None$17
201913None$71

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
PfizerCibinqo$15
1 payment
  • Education for Cibinqo · 2023-04-13 · $15
See the published payment
Every published payment
PfizerEducation · 2023-04-13Cibinqo$15
See earlier years (2022, 2021, 2019)

2022: $14

Payments by company in 2022
Genentech USAXolair$14
1 payment
  • Meals for Xolair · 2022-12-21 · $14

2021: $17

Payments by company in 2021
Octapharma USACutaquig$17
1 payment
  • Meals for Cutaquig · 2021-04-21 · $17

2019: $71

Payments by company in 2019
AlkermesAristada$71
3 payments
  • Meals for Aristada · 2019-09-26 · $25
  • Meals for Aristada · 2019-06-26 · $23
  • Meals for Aristada · 2019-01-03 · $23

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
1205102472
Licence
CA A126642California A126642: Current · expires 2027-07-31
Trained
Stanford University School of Medicine, 2012
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207RA0201X (207RA0201X); Internal medicine (207R00000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2012-03-31
NPI last updated
2024-04-15
NPI record certified
2024-04-15

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

Extra NPI addresses: 3351 El Camino Real Ste 100, Atherton, CA, 94027