Tiffany E Chao
General Surgery · San Jose
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 5
- 2 carriers
- 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.
Plans that list them
5 plans · 2 carriers
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Tiffany E Chao’s office at (408) 885-5000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
5 of 5 plans
| SCAN Balance (HMO C-SNP) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN Classic (HMO) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN MyChoice (HMO) | SCAN Health Plan | Listed | Oct 3, 2026 |
| SCAN Strive (HMO C-SNP) | SCAN Health Plan | Listed | Oct 3, 2026 |
| DualConnect (HMO D-SNP) | Santa Clara Family Health Plan | Listed | Sep 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.
- 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
$18,858
Medicare paid this office $18,858 for 147 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 50 | $3,447 | $44 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 39 | $2,632 | $67 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 23 | $1,621 | $70 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 14 | $1,600 | $114 |
| Hospital discharge day management, 30 minutes or less | 19 | $1,349 | $71 |
Procedures Medicare counted
| Colonoscopy | 1-10 | None |
| Hernia repair - groin (open) | 1-10 | None |
| Upper gastrointestinal (GI) endoscopy for acid reflux | 1-10 | None |
Who their Medicare patients are
147 Original Medicare patients in 2024. Average age 76 · Under 65 14% · 85 and older 27% · Women 52% · Also on Medicaid 57% · Health risk score 2.07. Above the middle of the specialty; the typical general surgery clinician is at 1.69.
Conditions among them: High blood pressure 75% · Diabetes 47% · Heart failure 39% · Depression 37% · Chronic kidney disease 36% · Coronary heart disease 35% · Dementia 35% · Atrial fibrillation 33% · Stroke 31% · COPD 18% · Cancer 14%.
The office billed $203,908, Medicare allowed $24,404 and paid $18,858; for 216 services of 26 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 | 147 | 216 | 76 | 2.07 | $203,908 | $18,858 |
| 2023 | 88 | 178 | 75 | 2.22 | $199,284 | $19,341 |
| 2022 | 128 | 248 | 70 | 1.96 | $256,776 | $27,146 |
| 2021 | 131 | 238 | 73 | 2.00 | $214,088 | $22,016 |
| 2020 | 99 | 182 | 71 | 2.24 | $210,556 | $22,192 |
| 2019 | 92 | 173 | 71 | 1.75 | $119,638 | $16,860 |
| 2018 | 143 | 281 | 74 | 1.72 | $230,687 | $34,218 |
| 2017 | 73 | 121 | 71 | 2.17 | $105,375 | $15,490 |
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: 4 services
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 41 | $3,908 | $47 |
| Hospital discharge day management, 30 minutes or less | 22 | $1,727 | $78 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 18 | $1,696 | $77 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 13 | $1,002 | $77 |
2022: 6 services
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 58 | $8,989 | $78 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 12 | $1,949 | $150 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 15 | $1,573 | $105 |
| Hospital discharge day management, 30 minutes or less | 13 | $1,317 | $82 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 24 | $1,210 | $42 |
| Short return visit | 12 | $499 | $36 |
2021: 5 services
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 45 | $6,139 | $80 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 20 | $2,818 | $141 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 28 | $2,123 | $42 |
| Hospital discharge day management, 30 minutes or less | 24 | $1,919 | $80 |
| Short return visit | 26 | $947 | $34 |
2020: 5 services
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 36 | $3,165 | $43 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 17 | $2,336 | $137 |
| Hospital discharge day management, 30 minutes or less | 17 | $1,341 | $79 |
| Short return visit (20+ min) | 16 | $876 | $55 |
| Short return visit | 14 | $365 | $24 |
2019: 5 services
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 30 | $2,354 | $35 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 11 | $1,178 | $107 |
| Hospital discharge day management, 30 minutes or less | 17 | $1,120 | $62 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 14 | $994 | $62 |
| Short return visit | 11 | $255 | $21 |
2018: 6 services
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 55 | $7,823 | $65 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 22 | $2,559 | $116 |
| Hospital discharge day management, 30 minutes or less | 32 | $2,073 | $65 |
| New patient visit (45+ min) | 17 | $1,545 | $91 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 12 | $1,078 | $90 |
| Return visit (30+ min) | 12 | $848 | $65 |
2017: 2 services
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 19 | $2,786 | $65 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 14 | $1,256 | $90 |
Medicaid work
$4,239 in 2024
Medicaid paid $4,239 for 368 billed services this clinician did in 2024, up to 27 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.
| SBSQ HOSPITAL IP/OBS CARE SF/LOW MDM 25 MINUTES | 244 | $3,320 |
| Short return visit | 12 | $341 |
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 13 | $333 |
| Hospital inpatient or observation discharge day management; 30 minutes or less on the date of the encounter | 28 | $239 |
| OFFICE/OUTPATIENT NEW SF MDM 15 MINUTES | 12 | $5 |
| Pain severity quantified; no pain present (COA) (ONC) | 12 | $0 |
| Medication list documented in medical record (COA) | 47 | $0 |
| 2024 | 368 | 7 | 27 | $4,239 |
| 2023 | 288 | 3 | 26 | $3,534 |
| 2022 | 172 | 4 | 15 | $2,852 |
| 2021 | 171 | 3 | 20 | $2,510 |
| 2020 | 75 | 2 | 19 | $1,072 |
| 2019 | 84 | 2 | 18 | $1,215 |
| 2018 | 148 | 5 | 18 | $3,072 |
See the largest Medicaid services in earlier years
2023
| SBSQ HOSPITAL IP/OBS CARE SF/LOW MDM 25 MINUTES | 250 | $3,177 |
| Hospital inpatient or observation discharge day management; 30 minutes or less on the date of the encounter | 25 | $311 |
| OFFICE/OUTPATIENT NEW SF MDM 15 MINUTES | 13 | $46 |
2022
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 124 | $2,218 |
| SBSQ HOSPITAL IP/OBS CARE SF/LOW MDM 25 MINUTES | 22 | $391 |
| Hospital inpatient or observation discharge day management; 30 minutes or less on the date of the encounter | 12 | $208 |
| Short return visit | 14 | $35 |
2021
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 74 | $1,616 |
| SBSQ HOSPITAL IP/OBS CARE SF/LOW MDM 25 MINUTES | 29 | $452 |
| Short return visit | 68 | $442 |
2020
| SBSQ HOSPITAL IP/OBS CARE SF/LOW MDM 25 MINUTES | 49 | $949 |
| Short return visit (20+ min) | 26 | $124 |
2019
| SBSQ HOSPITAL IP/OBS CARE SF/LOW MDM 25 MINUTES | 66 | $1,048 |
| Short return visit | 18 | $168 |
2018
| SBSQ HOSPITAL IP/OBS CARE MOD MDM 35 MINUTES | 29 | $1,189 |
| New patient visit (45+ min) | 69 | $1,115 |
| Service | 23 | $555 |
| Hospital inpatient or observation discharge day management; 30 minutes or less on the date of the encounter | 13 | $135 |
| Service | 14 | $78 |
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
- 1538301338
- Video visits
- Lists video visits
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Student in a training program (390200000X)
- Mailing address
- 55 Fruit Street, Massachusetts General Hospital, Grb 425, Boston, MA, 02114
- NPI first listed
- 2009-03-25
- NPI last updated
- 2009-11-20
This is when the NPI record was last certified, not a medical board exam.