Kei Hanafusa, MD
Diagnostic Radiology · San Jose
- 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
Offices
1 location · County of Santa Clara · 1,000 clinicians in this group
Looking this up.
Hospitals listed: Santa Clara Valley Medical Center. 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. Hanafusa’s office at (408) 885-5000 to ask if they take your plan before you enroll.
California Medical Board record
Licence G84175 · Current
Licensed to practise in California · since 1997 · expires 2027-04-30 · University of Chicago, Pritzker 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.
- Santa Clara Valley Medical CenterSan Jose, CAAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of Santa Clara Valley Health and Hospital System, which runs 3 hospitalsPatients rate it 3 of 5 · 70% would definitely recommend itOverall rating: 2 of 5 starsWorse than the national rate — SSI - Colon Surgery: 2.572, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.563, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.256, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.369, Oct 2024 – Sep 2025
See every measure and the patient survey for Santa Clara Valley Medical Center
Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 1 worse of 8 measures. Readmissions: 0 better, 10 the same, 1 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| SSI - Colon SurgeryInfections | 2.572 | Worse | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.563 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.256 | Better | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.369 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.25 (0.3 to 2.2) · 1,535 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.07 (0.76 to 1.38) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 214.59 (167.38 to 261.8) · 108 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 2.8 · 41 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 6 · 141 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 10.2 · 124 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 8.3 · 501 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 14.9 · 653 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 10.1 · 348 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3 · 4,502 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.24 (0.04 to 0.43) · 9,014 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.34 (0.15 to 0.52) · 9,216 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 4.54 (2.51 to 6.58) · 1,421 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.54 (0 to 3.2) · 288 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.11 (0.66 to 3.56) · 1,446 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 11.61 (4.09 to 19.14) · 294 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 7.29 (3.39 to 11.2) · 299 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.9 (0.45 to 3.36) · 333 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.23 (0 to 0.78) · 7,538 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 5.4 · 94 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.735 | No different | Oct 2024 – Sep 2025 |
| SSI - Abdominal HysterectomyInfections | 2.573 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.6 · 185 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 22.1 · 951 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 56.3 · 128 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | 6.4 · 644 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 1.3 · 699 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.3 · 921 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.7 (3.9 to 8.1) · 226 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 12.6 (9.4 to 16.5) · 226 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.4 · 94 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 11.4 · 54 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 20.3 · 242 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 13.2 (9.9 to 17.4) · 702 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 1 (0.7 to 1.4) · 195 cases | No different | Jan 2024 – Dec 2024 |
What patients said (4,032 patients answered, 29% of those asked)
| Cleanliness | 3 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 3 |
| Discharge information | 2 |
| Overall hospital rating | 3 |
| Quietness | 2 |
| Recommend hospital | 4 |
| Room was "always" clean | 70% |
| Nurses "always" communicated well | 73% |
| Doctors "always" communicated well | 76% |
| Staff "always" explained | 57% |
| Yes, staff "did" give patients this information | 82% |
| Yes, staff "did" give patients information about help after discharge | 82% |
| Doctors "always" explained things so they could understand | 71% |
| Doctors "always" listened carefully | 74% |
| Doctors "always" treated them with courtesy and respect | 82% |
| Patients who gave a rating of "9" or "10" (high) | 67% |
| Staff "always" explained new medications | 71% |
| Nurses "always" explained things so they could understand | 71% |
| Nurses "always" listened carefully | 69% |
| Nurses "always" treated them with courtesy and respect | 80% |
| "Always" quiet at night | 43% |
| "YES", patients would definitely recommend the hospital | 70% |
| Staff "always" explained possible side effects | 44% |
| Yes, staff "did" give patients information about possible symptoms | 83% |
Original Medicare doctor bills
$28,557
Medicare paid this office $28,557 for 583 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Screening mammography | 523 | $21,293 | $41 |
| Screening mammography | 29 | $3,778 | $130 |
| Diagnostic mammography of both breasts | 24 | $556 | $23 |
| Screening 3d breast mammography | 16 | $513 | $32 |
| Diagnostic mammography of 1 breast | 20 | $453 | $23 |
See all 6 services
| Screening mammography | 523 | $21,293 | $41 |
| Screening mammography | 29 | $3,778 | $130 |
| Diagnostic mammography of both breasts | 24 | $556 | $23 |
| Screening 3d breast mammography | 16 | $513 | $32 |
| Diagnostic mammography of 1 breast | 20 | $453 | $23 |
| Complete ultrasound scan of 1 breast | 21 | $299 | $14 |
Who their Medicare patients are
583 Original Medicare patients in 2024. Average age 70 · Also on Medicaid 72% · Health risk score 0.91. At or below the middle of the specialty; the typical diagnostic radiology clinician is at 1.7.
Conditions among them: High blood pressure 68% · Diabetes 40% · Depression 15% · Chronic kidney disease 12% · Cancer 12% · Coronary heart disease 8% · Heart failure 5% · COPD 5% · Atrial fibrillation 5% · Stroke 4%.
The office billed $206,624, Medicare allowed $30,676 and paid $28,557; for 647 services of 9 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
| 2024 | 583 | 647 | 70 | 0.91 | $206,624 | $28,557 |
| 2023 | 496 | 567 | 70 | 0.95 | $185,677 | $27,260 |
| 2022 | 337 | 394 | 69 | 0.97 | $140,991 | $19,697 |
| 2021 | 408 | 458 | 69 | 0.89 | $140,507 | $21,746 |
| 2020 | 338 | 362 | 69 | 1.06 | $115,795 | $18,161 |
| 2019 | 533 | 616 | 68 | 0.97 | $196,894 | $33,150 |
| 2017 | 20 | 20 | 68 | 0.91 | $5,608 | $2,034 |
| 2016 | 137 | 228 | 67 | 0.89 | $71,991 | $6,514 |
| 2015 | 300 | 560 | 67 | 1.04 | $155,924 | $14,100 |
| 2014 | 501 | 896 | 68 | 0.98 | $241,475 | $28,656 |
| 2013 | 95 | 170 | 67 | 1.03 | $44,541 | $7,409 |
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: 6 services
| Screening mammography | 428 | $18,122 | $42 |
| Screening mammography | 36 | $4,763 | $132 |
| Diagnostic mammography of both breasts | 27 | $838 | $31 |
| Diagnostic mammography of 1 breast | 21 | $643 | $31 |
| Screening 3d breast mammography | 19 | $636 | $33 |
| Complete ultrasound scan of 1 breast | 16 | $456 | $27 |
2022: 5 services
| Screening mammography | 279 | $11,877 | $43 |
| Screening mammography | 28 | $3,702 | $132 |
| Diagnostic mammography of 1 breast | 21 | $556 | $26 |
| Complete ultrasound scan of 1 breast | 22 | $531 | $23 |
| Diagnostic mammography of both breasts | 20 | $480 | $24 |
2021: 5 services
| Screening mammography | 349 | $15,213 | $44 |
| Screening mammography | 21 | $2,829 | $135 |
| Diagnostic mammography of 1 breast | 26 | $773 | $29 |
| Diagnostic mammography of both breasts | 23 | $671 | $29 |
| Complete ultrasound scan of 1 breast | 20 | $597 | $26 |
2020: 3 services
| Screening mammography | 291 | $13,046 | $45 |
| Biopsy of breast and placement of locating device using ultrasound, first growth | 11 | $1,717 | $143 |
| Diagnostic mammography of 1 breast | 20 | $459 | $23 |
2019: 8 services
| Screening mammography | 452 | $19,811 | $44 |
| Screening mammography | 50 | $6,706 | $134 |
| Biopsy of breast and placement of locating device using x-ray with needle, first growth | 11 | $1,687 | $153 |
| Placement of locating device in breast using imaging guidance, first growth | 11 | $1,021 | $93 |
| Diagnostic mammography of 1 breast | 31 | $999 | $32 |
| Diagnostic mammography of both breasts | 22 | $835 | $38 |
| Complete ultrasound scan of 1 breast | 11 | $371 | $29 |
| X-ray of surgical specimen | 12 | $89 | $7 |
2017: 1 service
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 13 | $1,866 | $144 |
2016: 7 services
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 43 | $1,682 | $39 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 33 | $1,291 | $39 |
| Diagnostic mammography, including computer-aided detection (cad) when performed; bilateral | 30 | $887 | $30 |
| Complete ultrasound scan of 1 breast | 13 | $495 | $33 |
| Diagnostic mammography, including computer-aided detection (cad) when performed; unilateral | 17 | $313 | $18 |
| Computer analysis of screening mammogram to assist detection of cancer | 42 | $136 | $3 |
| Computer analysis of screening mammogram to assist detection of cancer | 33 | $107 | $3 |
2015: 8 services
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 158 | $6,034 | $38 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 89 | $3,397 | $38 |
| Biopsy of breast and placement of locating device using ultrasound, first growth | 11 | $1,550 | $141 |
| Diagnostic mammography, including computer-aided detection (cad) when performed; unilateral | 24 | $718 | $29 |
| Diagnostic mammography, including computer-aided detection (cad) when performed; bilateral | 18 | $575 | $32 |
| Computer analysis of screening mammogram to assist detection of cancer | 146 | $482 | $3 |
| Complete ultrasound scan of 1 breast | 14 | $452 | $30 |
| Computer analysis of screening mammogram to assist detection of cancer | 88 | $291 | $3 |
2014: 8 services
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 235 | $14,271 | $60 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 178 | $6,949 | $39 |
| Diagnostic mammography, including computer-aided detection (cad) when performed; bilateral | 41 | $1,733 | $42 |
| Biopsy of breast and placement of locating device using ultrasound, first growth | 11 | $1,492 | $136 |
| Diagnostic mammography, including computer-aided detection (cad) when performed; unilateral | 31 | $952 | $31 |
| Computer analysis of screening mammogram to assist detection of cancer | 222 | $796 | $4 |
| Computer analysis of screening mammogram to assist detection of cancer | 141 | $478 | $3 |
| Ultrasound of breasts | 19 | $441 | $23 |
2013: 5 services
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 19 | $3,178 | $167 |
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (cad) when performed | 46 | $1,762 | $38 |
| Ultrasound of breasts | 13 | $303 | $23 |
| Computer analysis of screening mammogram to assist detection of cancer | 19 | $167 | $9 |
| Computer analysis of screening mammogram to assist detection of cancer | 34 | $109 | $3 |
Medicaid work
$24,203 in 2024
Medicaid paid $24,203 for 3,140 billed services this clinician did in 2024, up to 166 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.
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 2,818 | $21,588 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ BI | 155 | $1,522 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ UNI | 57 | $570 |
| Complete unilateral real time ultrasound of breast | 110 | $521 |
| 2024 | 3,140 | 4 | 166 | $24,203 |
| 2023 | 1,869 | 5 | 152 | $13,346 |
| 2022 | 762 | 3 | 63 | $5,187 |
| 2021 | 789 | 3 | 72 | $5,039 |
| 2020 | 449 | 1 | 63 | $4,851 |
| 2019 | 720 | 1 | 46 | $1,248 |
| 2018 | 902 | 2 | 46 | $954 |
See the largest Medicaid services in earlier years
2023
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 1,713 | $12,247 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ BI | 53 | $582 |
| SCREENING DIGITAL BREAST TOMOSYNTHESIS BI | 55 | $257 |
| Complete unilateral real time ultrasound of breast | 33 | $242 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ UNI | 15 | $18 |
2022
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 733 | $5,082 |
| Complete unilateral real time ultrasound of breast | 16 | $104 |
| DIGITAL BREAST TOMOSYNTHESIS BILATERAL | 13 | $0 |
2021
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 755 | $4,798 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ BI | 19 | $171 |
| Complete unilateral real time ultrasound of breast | 15 | $70 |
2020
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 449 | $4,851 |
2019
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 720 | $1,248 |
2018
| Screening mammography, bilateral (2-view study of each breast), including computer-aided detection (CAD) when performed | 890 | $954 |
| DIAGNOSTIC MAMMOGRAPHY COMPUTER-AIDED DETCJ UNI | 12 | $0 |
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 80.6 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1538122270
- Licence
- CA G84175California G84175: Current · expires 2027-04-30
- Trained
- University of Chicago, Pritzker School of Medicine, 1989
- Gender
- Male
More record details
- Sole proprietor
- No
- Medicaid ID
- CA 00G841750
- Taxonomy
- Diagnostic radiology (2085R0202X)
- Mailing address
- 751 S Bascom Ave, San Jose, CA, 95128
- NPI first listed
- 2006-04-11
- NPI last updated
- 2009-02-25
This is when the NPI record was last certified, not a medical board exam.