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Millie B Arora, DO

Hospitalist · San Francisco

NPI 1003347527

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
3
1 carrier
Offices
2
Since medical school
9 years
Graduated 2017

Offices

2 locations · Regents of the University of California · 706 clinicians in this group

Looking this up.

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

Plans that list them

3 plans · 1 carrier

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Arora’s office at (415) 476-4029 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
Imperial Courage Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Dynamic Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Senior Value (HMO C-SNP)Imperial Health Plan of California, Inc.ListedSep 1, 2026

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.

  • 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
See every measure and the patient survey for UCSF Medical Center

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: 3 better, 5 the same, 3 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 UCSF Medical Center
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.9 (3.79 to 6.02) · 7,590 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits12.8 (11.3 to 14.4) · 2,019 casesWorseJan 2024 – Dec 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths139.4 (110.22 to 168.58) · 452 casesBetterJul 2022 – Jun 2024
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.622BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.626BetterOct 2024 – Sep 2025
MRSA BacteremiaInfections0.491BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.8 (0.7 to 1) · 2,336 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.24 (0.58 to 1.9) · 4,689 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.05 (0.89 to 1.2)No differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.9 · 89 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths7.5 · 85 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths10.1 · 132 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.6 · 454 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 618 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.6 · 380 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.7 · 5,000 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.22 (0.06 to 0.38) · 15,965 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.2 (0.05 to 0.35) · 17,859 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.85 (0 to 1.83) · 4,184 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2 (1.1 to 2.9) · 6,516 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths7.35 (4.49 to 10.21) · 3,989 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5 (3.22 to 6.77) · 4,087 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.95 (0.74 to 3.15) · 2,034 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.95 (0.63 to 1.28) · 15,431 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 399 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.899No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.689No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.224No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16 · 156 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20 · 564 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits60.3 · 160 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-9.7 · 550 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits44.1 · 660 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.8 · 667 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.7 (4.8 to 6.7) · 2,019 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6 · 421 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits10.5 · 53 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20 · 107 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.9 (11.3 to 17.1) · 3,247 casesNo differentJan 2022 – Dec 2024

What patients said (3,181 patients answered, 25% of those asked)

Patient survey stars by topic at UCSF Medical Center
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at UCSF Medical Center
Room was "always" clean71%
Nurses "always" communicated well80%
Doctors "always" communicated well80%
Staff "always" explained61%
Yes, staff "did" give patients this information88%
Yes, staff "did" give patients information about help after discharge87%
Doctors "always" explained things so they could understand74%
Doctors "always" listened carefully78%
Doctors "always" treated them with courtesy and respect86%
Patients who gave a rating of "9" or "10" (high)76%
Staff "always" explained new medications75%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully78%
Nurses "always" treated them with courtesy and respect86%
"Always" quiet at night50%
"YES", patients would definitely recommend the hospital81%
Staff "always" explained possible side effects46%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$18,559

Medicare paid this office $18,559 for 94 people.

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

Largest Original Medicare bills
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes65$10,022$69
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes23$4,008$105
Initial hospital care with straightforward or low-level medical decision making at least 55 minutes14$1,617$116
Hospital discharge day management, 30 minutes or less16$1,180$74

Who their Medicare patients are

94 Original Medicare patients in 2024. Average age 75 · Under 65 15% · 85 and older 21% · Women 48% · Also on Medicaid 63% · Health risk score 2.95. Above the middle of the specialty; the typical hospitalist clinician is at 2.49.

Conditions among them: High blood pressure 75% · Diabetes 46% · Chronic kidney disease 45% · Depression 44% · Heart failure 40% · Atrial fibrillation 38% · Coronary heart disease 37% · COPD 36% · Cancer 35% · Dementia 28% · Stroke 16%.

The office billed $106,061, Medicare allowed $23,446 and paid $18,559; for 227 services of 8 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
202494227752.95$106,061$18,559
202387257743.10$115,942$20,986
2022101294752.85$154,856$25,001
2021118363753.21$177,344$32,044
20203090714.34$37,790$7,429

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: 3 services

Original Medicare services billed in 2023
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes65$11,001$71
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes26$5,473$107
Hospital discharge day management, 30 minutes or less15$1,048$70

2022: 4 services

Original Medicare services billed in 2022
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes56$9,196$63
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes41$7,744$90
Initial hospital care with moderate level of medical decision making at least 75 minutes30$5,051$168
Hospital discharge day management, more than 30 minutes15$1,418$95

2021: 6 services

Original Medicare services billed in 2021
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes54$11,521$90
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes62$7,656$63
Initial hospital care with moderate level of medical decision making at least 75 minutes37$6,633$175
Hospital discharge day management, 30 minutes or less36$2,253$63
Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes15$1,223$76
Hospital discharge day management, more than 30 minutes11$1,063$97

2020: 3 services

Original Medicare services billed in 2020
Subsequent hospital care with moderate levelof medical decision making at least 50 minutes18$2,630$91
Subsequent hospital care with moderate levelof medical decision making at least 35 minutes17$1,824$63
Hospital discharge day management, 30 minutes or less18$1,152$64

Medicaid work

$9,274 in 2023

Medicaid paid $9,274 for 108 billed services this clinician did in 2023, 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 2023
SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES108$9,274
Medicaid work by year
2023108117$9,274

Drugs they prescribed that Part D paid

$18,007

Pharmacies billed $18,007 in 2024.

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

26 generic and fewer than 11 brand-name prescriptions · $18,007 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
20243616NoneNone$18,007
202333170% (0)None$8,568
20223515NoneNone$3,238
20219036None16%$5,325
20202711NoneNone$5,080
201919NoneNoneNone$1,343

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

Money from drug and device companies

$174 in 2023

A payment is not proof that care is biased.

Payments by company
MedtronicMinimed 780g$174
2 payments
  • Meals for Minimed 780g · 2023-07-15 · $154
  • Travel for Minimed 780g · 2023-07-15 · $20
See all 2 published payments
Every published payment
MedtronicMeals · 2023-07-15Minimed 780g$154
MedtronicTravel · 2023-07-15Minimed 780g$20

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
74.5 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1003347527
Licence
CA 20A17065
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Internal medicine (207R00000X)
Mailing address
101 the City Dr S, City Tower, Suite 400, Orange, CA, 92868
NPI first listed
2017-03-26
NPI last updated
2020-07-13
NPI record certified
2020-07-13

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