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Aileen Chang, MD

Diagnostic Radiology · Bellflower

NPI 1780117895

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
Not verified
Not the same as out of network.
Offices
7

Offices

7 locations · Southern California Permanente Medical Group · 11,250 clinicians in this group

Looking this up.

Hospitals listed: Kaiser Foundation Hospital - Downey. 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. Chang’s office to ask if they take your plan before you enroll.

California Medical Board record

Licence A156964 · Current

Licensed to practise in California · since 2018 · expires 2028-07-31 · University of California, San Diego 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.

  • Kaiser Foundation Hospital - DowneyDowney, CAAcute Care Hospital · Voluntary non-profit - Other · No emergency department · Birthing-friendlyPart of Kaiser Permanente, which runs 41 hospitals in 3 statesPatients rate it 3 of 5 · 72% would definitely recommend it
    Overall rating: 4 of 5 starsBetter than the national rate — Clostridium Difficile (C.Diff): 0.205, Oct 2024 – Sep 2025
See every measure and the patient survey for Kaiser Foundation Hospital - Downey

Behind the star rating — Deaths: 0 better, 1 the same, 0 worse of 1 measures. Safety: 1 better, 6 the same, 0 worse of 7 measures. Readmissions: 0 better, 1 the same, 0 worse of 1 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Kaiser Foundation Hospital - Downey
Clostridium Difficile (C.Diff)Infections0.205BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.02 (0 to 2.09) · 222 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1 (0.55 to 1.45)No differentJul 2022 – Jun 2024
Death rate for pneumonia patientsComplications and deaths16.8 · 28 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths9.8 · 310 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.9 · 3,832 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.2 (0 to 0.43) · 1,012 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.26 (0.05 to 0.48) · 1,039 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.16 (1.63 to 6.69) · 177 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.65 (0 to 3.38) · 49 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.53 (0.84 to 4.22) · 174 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths11.3 (1.53 to 21.06) · 50 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.05 (0.79 to 9.31) · 52 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.74 (0.22 to 3.26) · 59 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.39 (0 to 1.44) · 900 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4 · 26 casesNoneApr 2023 – Mar 2025
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.635No differentOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.914No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.551No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.601No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits14.1 · 106 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits21.4 · 721 casesNoneJul 2023 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits33.8 · 28 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits19.8 · 710 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.5 · 189 casesNoneJul 2023 – Jun 2025

What patients said (553 patients answered, 17% of those asked)

Patient survey stars by topic at Kaiser Foundation Hospital - Downey
Cleanliness3
Nurse communication3
Doctor communication3
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness3
Recommend hospital4
Share of patients giving the best answer at Kaiser Foundation Hospital - Downey
Room was "always" clean69%
Nurses "always" communicated well77%
Doctors "always" communicated well79%
Staff "always" explained57%
Yes, staff "did" give patients this information87%
Yes, staff "did" give patients information about help after discharge86%
Doctors "always" explained things so they could understand75%
Doctors "always" listened carefully77%
Doctors "always" treated them with courtesy and respect84%
Patients who gave a rating of "9" or "10" (high)73%
Staff "always" explained new medications70%
Nurses "always" explained things so they could understand72%
Nurses "always" listened carefully77%
Nurses "always" treated them with courtesy and respect82%
"Always" quiet at night58%
"YES", patients would definitely recommend the hospital72%
Staff "always" explained possible side effects43%
Yes, staff "did" give patients information about possible symptoms87%

Original Medicare doctor bills

$3,768

Medicare paid this office $3,768 for 119 people.

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

Largest Original Medicare bills
Ct scan of abdomen and pelvis with contrast13$671$52
Ct scan head or brain without contrast14$394$28
X-ray of chest, 1 view24$180$7

Who their Medicare patients are

119 Original Medicare patients in 2024. Average age 69 · Under 65 26% · 85 and older 9% · Women 57% · Also on Medicaid 64% · Health risk score 2.64. Sicker patients than 9 in 10 peers; the typical diagnostic radiology clinician is at 1.7.

Conditions among them: High blood pressure 75% · Diabetes 56% · Chronic kidney disease 45% · Heart failure 35% · Depression 27% · Coronary heart disease 24% · COPD 21% · Atrial fibrillation 20% · Dementia 18% · Stroke 15% · Cancer 11%.

The office billed $30,144, Medicare allowed $5,656 and paid $3,768; for 141 services of 39 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
2024119141692.64$30,144$3,768
2023241309732.32$72,780$16,993

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: 7 services

Original Medicare services billed in 2023
Screening mammography75$10,581$141
Ct scan of abdomen and pelvis with contrast23$1,461$64
Ct scan of blood vessels of chest with contrast17$1,003$59
Ct scan of abdomen and pelvis without contrast13$812$62
X-ray of chest, 1 view65$439$7
Screening mammography11$422$38
X-ray of chest, 2 views16$115$7

Medicaid work

$59,548 in 2024

Medicaid paid $59,548 for 959 billed services this clinician did in 2024, up to 52 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 2024
CT ABDOMEN & PELVIS W/CONTRAST MATERIAL152$26,087
Computed tomography, head or brain; without contrast material163$14,677
Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed294$13,697
Complete unilateral real time ultrasound of breast52$2,214
Radiologic examination, chest; single view214$1,393
DXA BONE DENSITY STUDY 1/> SITES AXIAL SKEL15$375
Radiologic examination, chest; 2 views31$367
Ultrasound, pelvic (nonobstetric), real time with image documentation; complete14$358
Ultrasound by transvaginal approach12$340
X-RAY EXAM OF ANKLE12$40
Medicaid work by year
20249591052$59,548
2023626478$38,466
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed435$32,032
CT ABDOMEN & PELVIS W/CONTRAST MATERIAL48$5,460
Radiologic examination, chest; single view131$847
Radiologic examination, chest; 2 views12$127

Checkups this office reported

Medicare did not publish checkup rates for this clinician.

Medicare’s overall office score
100.0 / 100
Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.

Professional record

NPI
1780117895
Licence
CA A156964California A156964: Current · expires 2028-07-31
Trained
University of California, San Diego School of Medicine, 2017
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Diagnostic radiology (2085R0202X)
Mailing address
5767 W Century Blvd Ste 400, Los Angeles, CA, 90045
NPI first listed
2017-04-05
NPI last updated
2023-10-27
NPI record certified
2022-06-08

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

Extra NPI addresses: 751 S Bascom Ave, San Jose, CA, 95128

This office lists an electronic records connection.