Joseph C Kwok, MD
Anesthesiology · Redwood City
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 1
- 1 carrier
- Offices
- 2
Offices
2 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group
Looking this up.
Hospitals listed: Sequoia Hospital. That is not proof they admit you there this week.
Plans that list them
1 plan · 1 carrier
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Kwok’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| DualConnect (HMO D-SNP) | Santa Clara Family Health Plan | Listed | Sep 1, 2026 |
California Medical Board record
Licence A117601 · Current
Licensed to practise in California · since 2011 · expires 2027-06-30 · University of Pittsburgh 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.
- Sequoia HospitalRedwood City, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency department · Birthing-friendlyPart of CommonSpirit Health, which runs 145 hospitals in 19 statesPatients rate it 4 of 5 · 81% would definitely recommend itOverall rating: 5 of 5 starsBetter than the national rate — Death rate among surgical inpatients with serious treatable complications: 104.12 (51.8 to 156.44) · 56 cases, Jul 2022 – Jun 2024Better than the national rate — Clostridium Difficile (C.Diff): 0, Oct 2024 – Sep 2025
See every measure and the patient survey for Sequoia Hospital
Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 1 better, 4 the same, 0 worse of 5 measures. Readmissions: 3 better, 6 the same, 0 worse of 9 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 104.12 (51.8 to 156.44) · 56 cases | Better | Jul 2022 – Jun 2024 |
| Clostridium Difficile (C.Diff)Infections | 0 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 0.95 (0 to 1.98) · 472 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.91 (0.58 to 1.24) | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 1.8 · 68 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 12.5 · 72 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 9.1 · 258 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 15.5 · 171 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 9.3 · 81 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3.2 · 1,231 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.23 (0.01 to 0.44) · 3,018 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.23 (0.03 to 0.44) · 3,164 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 2.59 (0.47 to 4.71) · 1,402 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.47 (0.04 to 2.9) · 926 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 1.68 (0.21 to 3.16) · 1,310 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 9.54 (4.42 to 14.67) · 978 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 4.98 (1.61 to 8.36) · 924 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.69 (0.19 to 3.19) · 192 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.57 (0 to 1.43) · 2,501 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.5 · 332 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.702 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0.853 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.2 · 67 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 22.3 · 295 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | -27.1 · 76 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -22.3 · 304 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | -4.6 · 178 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 17.3 · 180 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.1 · 305 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 10.9 · 41 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.7 · 29 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 13.1 (9.7 to 17.7) · 129 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.9 (0.7 to 1.2) · 713 cases | No different | Jan 2024 – Dec 2024 |
What patients said (631 patients answered, 27% of those asked)
| Cleanliness | 4 |
| Nurse communication | 4 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 3 |
| Recommend hospital | 5 |
| Room was "always" clean | 78% |
| Nurses "always" communicated well | 80% |
| Doctors "always" communicated well | 82% |
| Staff "always" explained | 60% |
| Yes, staff "did" give patients this information | 88% |
| Yes, staff "did" give patients information about help after discharge | 86% |
| Doctors "always" explained things so they could understand | 76% |
| Doctors "always" listened carefully | 81% |
| Doctors "always" treated them with courtesy and respect | 89% |
| Patients who gave a rating of "9" or "10" (high) | 77% |
| Staff "always" explained new medications | 76% |
| Nurses "always" explained things so they could understand | 77% |
| Nurses "always" listened carefully | 77% |
| Nurses "always" treated them with courtesy and respect | 88% |
| "Always" quiet at night | 55% |
| "YES", patients would definitely recommend the hospital | 81% |
| Staff "always" explained possible side effects | 44% |
| Yes, staff "did" give patients information about possible symptoms | 91% |
Original Medicare doctor bills
$47,378
Medicare paid this office $47,378 for 308 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Anesthesia for other procedure on large bowel using an endoscope | 61 | $7,002 | $115 |
| Anesthesia for lens surgery | 49 | $5,026 | $101 |
| Anesthesia for procedure on eyelid | 15 | $2,645 | $176 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 23 | $2,483 | $108 |
| Anesthesia for procedure on small and large bowel using an endoscope | 15 | $2,109 | $141 |
See all 7 services
| Anesthesia for other procedure on large bowel using an endoscope | 61 | $7,002 | $115 |
| Anesthesia for lens surgery | 49 | $5,026 | $101 |
| Anesthesia for procedure on eyelid | 15 | $2,645 | $176 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 23 | $2,483 | $108 |
| Anesthesia for procedure on small and large bowel using an endoscope | 15 | $2,109 | $141 |
| Anesthesia for procedure to correct abnormal heart rhythm | 16 | $1,438 | $90 |
| Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 11 | $606 | $55 |
Who their Medicare patients are
308 Original Medicare patients in 2024. Average age 76 · Women 54% · Also on Medicaid 6% · Health risk score 0.91. At or below the middle of the specialty; the typical anesthesiology clinician is at 1.54.
Conditions among them: High blood pressure 65% · Coronary heart disease 23% · Atrial fibrillation 23% · Diabetes 17% · Chronic kidney disease 16% · Cancer 15% · Depression 15% · Heart failure 9% · COPD 6% · Dementia 4% · Stroke 4%.
The office billed $385,488, Medicare allowed $59,540 and paid $47,378; for 327 services of 48 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 | 308 | 327 | 76 | 0.91 | $385,488 | $47,378 |
| 2023 | 135 | 153 | 75 | 1.08 | $200,071 | $25,228 |
| 2022 | 81 | 110 | 75 | 0.97 | $133,191 | $16,246 |
| 2021 | 208 | 401 | 75 | 1.58 | $602,188 | $53,905 |
| 2020 | 267 | 534 | 74 | 2.17 | $782,230 | $73,514 |
| 2019 | 296 | 527 | 74 | 1.72 | $741,947 | $78,053 |
| 2018 | 301 | 455 | 73 | 1.84 | $561,435 | $66,308 |
| 2017 | 324 | 468 | 73 | 2.01 | $555,141 | $72,117 |
| 2016 | 271 | 380 | 74 | 1.42 | $511,646 | $67,657 |
| 2014 | 57 | 69 | 71 | 1.53 | $117,723 | $17,594 |
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: 1 service
| Anesthesia for lens surgery | 29 | $3,270 | $113 |
2022: 2 services
| Anesthesia for x-ray or radiation therapy | 11 | $1,888 | $172 |
| Anesthesia for procedure to correct abnormal heart rhythm | 11 | $975 | $89 |
2021: 8 services
| Anesthesia for procedure for total knee joint replacement | 39 | $10,346 | $265 |
| Anesthesia for total hip replacement | 17 | $4,933 | $290 |
| Injection of substance into lower spine canal | 55 | $4,009 | $73 |
| Anesthesia for open or endoscopic total shoulder joint replacement | 12 | $3,831 | $319 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 12 | $1,578 | $131 |
| Ultrasonic guidance for needle placement | 56 | $1,551 | $28 |
| Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 46 | $1,346 | $29 |
| Injection of anesthetic agent and/or steroid into arm nerve bundle (brachial plexus) | 12 | $673 | $56 |
2020: 11 services
| Anesthesia for procedure for total knee joint replacement | 61 | $17,443 | $286 |
| Anesthesia for total hip replacement | 37 | $11,528 | $312 |
| Injection of substance into lower spine canal | 89 | $6,923 | $78 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 21 | $2,955 | $141 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 15 | $1,641 | $91 |
| Anesthesia for other procedure on large bowel using an endoscope | 13 | $1,615 | $124 |
| Ultrasonic guidance for needle placement | 55 | $1,586 | $29 |
| Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 55 | $1,558 | $28 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 25 | $1,027 | $35 |
| Insertion of artery tube for blood sampling or infusion through skin | 14 | $552 | $39 |
| Ultrasonic guidance for blood vessel access | 13 | $170 | $13 |
2019: 13 services
| Anesthesia for procedure for total knee joint replacement | 70 | $19,686 | $277 |
| Anesthesia for total hip replacement | 34 | $10,381 | $305 |
| Injection of substance into lower spine canal | 66 | $5,207 | $78 |
| Insertion of tube and injection of substance into lower spine canal | 31 | $2,467 | $80 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 39 | $2,396 | $35 |
| Anesthesia for other procedure or exam of knee joint using an endoscope | 11 | $2,156 | $196 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 18 | $1,776 | $89 |
| Anesthesia for other procedure on large bowel using an endoscope | 13 | $1,751 | $135 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 12 | $1,481 | $123 |
| Injection of anesthetic agent and/or steroid into thigh nerve (femoral nerve) | 15 | $637 | $42 |
| Ultrasonic guidance for needle placement | 18 | $515 | $29 |
| Insertion of artery tube for blood sampling or infusion through skin | 13 | $506 | $39 |
| Ultrasonic guidance for blood vessel access | 11 | $140 | $13 |
2018: 9 services
| Anesthesia for procedure for total knee joint replacement | 67 | $18,299 | $273 |
| Anesthesia for total hip replacement | 31 | $9,236 | $289 |
| Insertion of tube and injection of substance into lower spine canal | 71 | $5,652 | $79 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 25 | $3,240 | $125 |
| Anesthesia for other procedure on large bowel using an endoscope | 15 | $1,849 | $123 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 28 | $1,391 | $34 |
| Initial hospital care with straightforward or low level of medical decision making, per day at least 40 minutes | 14 | $1,220 | $87 |
| Injection of substance into lower spine canal | 13 | $1,002 | $77 |
| Daily hospital management of continuous spinal drug administration | 13 | $729 | $56 |
2017: 9 services
| Anesthesia for procedure for total knee joint replacement | 64 | $17,710 | $277 |
| Anesthesia for total hip replacement | 31 | $9,184 | $296 |
| Anesthesia for procedure on lower intestine using an endoscope | 40 | $6,115 | $153 |
| Insertion of tube and injection of substance into lower spine canal | 76 | $6,031 | $79 |
| Subsequent hospital care with moderate levelof medical decision making at least 35 minutes | 29 | $2,537 | $62 |
| Anesthesia for procedure on gastrointestinal tract using an endoscope | 15 | $2,010 | $126 |
| Anesthesia for other procedure on skin of arms, legs, and front body | 14 | $1,893 | $135 |
| Anesthesia for lens surgery | 11 | $1,441 | $131 |
| Subsequent hospital care with straightforward or low level of medical decision making, per day at least 25 minutes | 26 | $1,369 | $33 |
2016: 7 services
| Anesthesia for procedure for total knee joint replacement | 53 | $14,722 | $268 |
| Anesthesia for total hip replacement | 20 | $5,907 | $281 |
| Injections and continuous infusion into lower or sacral spinal canal | 58 | $4,888 | $83 |
| Anesthesia for procedure on lower intestine using an endoscope | 21 | $2,977 | $142 |
| Anesthesia for procedure on gastrointestinal tract using an endoscope | 15 | $1,770 | $118 |
| Daily hospital management of continuous spinal drug administration | 21 | $1,146 | $55 |
| Insertion of artery tube for blood sampling or infusion through skin | 11 | $479 | $44 |
Professional record
- NPI
- 1952693244
- Licence
- CA A117601California A117601: Current · expires 2027-06-30
- Trained
- University of Pittsburgh School of Medicine, 2010
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 207L00000X (207L00000X)
- Mailing address
- 325 Distel Cir Rm H3580, Los Altos, CA, 94022
- NPI first listed
- 2011-05-05
- NPI last updated
- 2022-05-09
- NPI record certified
- 2022-05-09
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 300 Pasteur Dr, Stanford, CA, 94305