Daetwan L Williams, MD
Anesthesiology · Palo Alto
- 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
- Since medical school
- 20 years
- University of Louisville School of Medicine, 2006
Offices
1 location · 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.
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. Williams’s office at (415) 600-1020 to ask if they take your plan before you enroll.
California Medical Board record
Licence A115394 · Current
Licensed to practise in California · since 2011 · expires 2027-01-31 · University of Louisville School of Medicine.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
School, training and certification
What this clinician told their state board, medical school and everything before it. Only some states publish this, so nothing here means the state does not say, not that there was no training or certification.
Specialty certification
- American Board of Anesthesiology - Anesthesiology
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
$93,658
Medicare paid this office $93,658 for 249 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Anesthesia for procedure to assess heart electrical activity | 93 | $36,399 | $383 |
| Anesthesia for procedure for total knee joint replacement | 14 | $4,940 | $353 |
| Anesthesia for total hip replacement | 12 | $4,117 | $343 |
| Insertion of artery tube for blood sampling or infusion through skin | 99 | $3,771 | $37 |
| Anesthesia for x-ray on arteries | 15 | $3,108 | $207 |
See all 9 services
| Anesthesia for procedure to assess heart electrical activity | 93 | $36,399 | $383 |
| Anesthesia for procedure for total knee joint replacement | 14 | $4,940 | $353 |
| Anesthesia for total hip replacement | 12 | $4,117 | $343 |
| Insertion of artery tube for blood sampling or infusion through skin | 99 | $3,771 | $37 |
| Anesthesia for x-ray on arteries | 15 | $3,108 | $207 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 26 | $1,855 | $71 |
| Ultrasound of heart with probe in esophagus, with report | 15 | $1,398 | $93 |
| Insertion of tube in pulmonary artery for monitoring | 13 | $953 | $73 |
| Insertion of probe in esophagus for heart ultrasound | 78 | $761 | $10 |
Procedures year by year
| Procedure | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|
| Insertion of artery tube for blood sampling or infusion through skin | 77 | 75 | 93 | 120 | 111 | 101 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 32 | 25 | 31 | 36 | 28 | 26 |
Times billed to Original Medicare each year. A blank year means fewer than 11 people had it, or none: Medicare does not publish smaller counts. Medicare Advantage patients are not included.
Who their Medicare patients are
249 Original Medicare patients in 2024. Average age 76 · Women 41% · Also on Medicaid 8% · Health risk score 1.63. Above the middle of the specialty; the typical anesthesiology clinician is at 1.54.
Conditions among them: High blood pressure 75% · Atrial fibrillation 65% · Coronary heart disease 46% · Heart failure 33% · Diabetes 29% · Chronic kidney disease 29% · Depression 20% · Cancer 19% · COPD 16% · Dementia 6% · Stroke 6%.
The office billed $745,805, Medicare allowed $117,874 and paid $93,658; for 497 services of 58 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 | 249 | 497 | 76 | 1.63 | $745,805 | $93,658 |
| 2023 | 211 | 483 | 77 | 1.60 | $678,073 | $88,178 |
| 2022 | 226 | 526 | 76 | 1.64 | $729,867 | $93,702 |
| 2021 | 184 | 452 | 76 | 2.05 | $624,660 | $76,849 |
| 2020 | 129 | 324 | 76 | 2.15 | $460,434 | $58,582 |
| 2019 | 138 | 364 | 75 | 2.38 | $506,553 | $64,337 |
| 2018 | 147 | 349 | 75 | 1.85 | $446,926 | $55,667 |
| 2017 | 158 | 396 | 76 | 1.79 | $472,170 | $62,092 |
| 2016 | 148 | 375 | 74 | 1.96 | $424,450 | $57,583 |
| 2015 | 173 | 439 | 73 | 1.96 | $419,825 | $68,848 |
| 2014 | 166 | 442 | 75 | 1.84 | $405,685 | $66,999 |
| 2013 | 176 | 411 | 75 | 1.77 | $313,480 | $63,887 |
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: 8 services
| Anesthesia for procedure to assess heart electrical activity | 93 | $39,415 | $424 |
| Insertion of artery tube for blood sampling or infusion through skin | 110 | $4,270 | $38 |
| Anesthesia for x-ray on arteries | 12 | $2,556 | $213 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 27 | $2,051 | $73 |
| Ultrasound of heart with probe in esophagus, with report | 14 | $1,348 | $96 |
| Anesthesia for procedure to correct abnormal heart rhythm | 13 | $1,231 | $95 |
| Insertion of tube in pulmonary artery for monitoring | 12 | $912 | $76 |
| Insertion of probe in esophagus for heart ultrasound | 86 | $840 | $10 |
2022: 9 services
| Anesthesia for procedure to assess heart electrical activity | 95 | $38,321 | $399 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 11 | $8,580 | $780 |
| Anesthesia for other procedure on artery of upper leg | 13 | $5,250 | $404 |
| Insertion of artery tube for blood sampling or infusion through skin | 118 | $4,542 | $38 |
| Anesthesia for x-ray on arteries | 13 | $3,164 | $243 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 36 | $2,631 | $73 |
| Ultrasound of heart with probe in esophagus, with report | 19 | $1,800 | $95 |
| Insertion of tube in pulmonary artery for monitoring | 19 | $1,438 | $76 |
| Insertion of probe in esophagus for heart ultrasound | 89 | $887 | $10 |
2021: 8 services
| Anesthesia for procedure to assess heart electrical activity | 92 | $33,924 | $365 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 13 | $9,168 | $705 |
| Insertion of artery tube for blood sampling or infusion through skin | 93 | $3,621 | $39 |
| Anesthesia for x-ray on arteries | 12 | $3,046 | $234 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 30 | $2,307 | $74 |
| Ultrasound of heart with probe in esophagus, with report | 19 | $1,872 | $99 |
| Insertion of tube in pulmonary artery for monitoring | 17 | $1,309 | $77 |
| Insertion of probe in esophagus for heart ultrasound | 82 | $831 | $10 |
2020: 5 services
| Anesthesia for procedure to assess heart electrical activity | 60 | $24,031 | $394 |
| Anesthesia for x-ray on arteries | 13 | $3,024 | $216 |
| Insertion of artery tube for blood sampling or infusion through skin | 73 | $2,995 | $40 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 23 | $1,920 | $77 |
| Insertion of probe in esophagus for heart ultrasound | 57 | $590 | $10 |
2019: 7 services
| Anesthesia for procedure to assess heart electrical activity | 66 | $25,076 | $380 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 12 | $8,395 | $700 |
| Insertion of artery tube for blood sampling or infusion through skin | 77 | $3,023 | $39 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 32 | $2,421 | $76 |
| Ultrasound of heart with probe in esophagus, with report | 20 | $1,994 | $100 |
| Insertion of tube in pulmonary artery for monitoring | 21 | $1,647 | $78 |
| Insertion of probe in esophagus for heart ultrasound | 60 | $611 | $10 |
2018: 8 services
| Anesthesia for procedure to assess heart electrical activity | 69 | $25,837 | $374 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 11 | $7,333 | $667 |
| Insertion of artery tube for blood sampling or infusion through skin | 78 | $2,995 | $38 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 29 | $2,552 | $88 |
| Anesthesia for procedure to correct abnormal heart rhythm | 15 | $1,379 | $92 |
| Ultrasound of heart with probe in esophagus, with report | 13 | $1,271 | $98 |
| Insertion of tube in pulmonary artery for monitoring | 13 | $1,214 | $93 |
| Insertion of probe in esophagus for heart ultrasound | 64 | $640 | $10 |
2017: 9 services
| Anesthesia for procedure to assess heart electrical activity | 65 | $24,186 | $361 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 12 | $8,358 | $696 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 39 | $4,215 | $105 |
| Insertion of artery tube for blood sampling or infusion through skin | 82 | $3,772 | $44 |
| Insertion of tube in pulmonary artery for monitoring | 15 | $1,669 | $111 |
| Ultrasound of heart with probe in esophagus, with report | 17 | $1,668 | $98 |
| Anesthesia for procedure to correct abnormal heart rhythm | 14 | $1,398 | $100 |
| Insertion of probe in esophagus for heart ultrasound | 60 | $621 | $10 |
| Ultrasound of heart blood flow, valves and chambers | 13 | $215 | $17 |
2016: 9 services
| Anesthesia for procedure to assess heart electrical activity | 67 | $26,295 | $381 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 12 | $7,995 | $666 |
| Insertion of artery tube for blood sampling or infusion through skin | 66 | $2,979 | $44 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 26 | $2,864 | $106 |
| Anesthesia for procedure to correct abnormal heart rhythm | 18 | $1,836 | $97 |
| Insertion of tube in pulmonary artery for monitoring | 14 | $1,566 | $112 |
| Ultrasound of heart with probe in esophagus, with report | 14 | $1,524 | $109 |
| Insertion of probe in esophagus for heart ultrasound | 63 | $1,255 | $19 |
| Ultrasonic guidance for blood vessel access | 28 | $358 | $13 |
2015: 10 services
| Anesthesia for procedure to assess heart electrical activity | 69 | $26,428 | $378 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 16 | $10,744 | $671 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 40 | $4,358 | $106 |
| Insertion of artery tube for blood sampling or infusion through skin | 87 | $3,873 | $44 |
| Insertion of tube in pulmonary artery for monitoring | 19 | $2,122 | $112 |
| Ultrasound of heart with probe in esophagus, with report | 15 | $1,635 | $109 |
| Interpretation and report of ultrasound of heart | 17 | $1,615 | $90 |
| Insertion of probe in esophagus for heart ultrasound | 70 | $1,373 | $19 |
| Ultrasound of heart blood flow, valves and chambers | 17 | $283 | $17 |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | 17 | $51 | $3 |
2014: 11 services
| Anesthesia for procedure to assess heart electrical activity | 54 | $21,320 | $388 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 14 | $9,473 | $677 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 42 | $4,724 | $103 |
| Insertion of artery tube for blood sampling or infusion through skin | 66 | $2,961 | $44 |
| Insertion of tube in pulmonary artery for monitoring | 22 | $2,382 | $108 |
| Insertion of probe in esophagus for heart ultrasound | 55 | $2,014 | $36 |
| Ultrasound of heart with probe in esophagus, with report | 20 | $1,797 | $90 |
| Anesthesia for procedure to correct abnormal heart rhythm | 15 | $1,332 | $89 |
| Interpretation and report of ultrasound of heart | 20 | $1,072 | $54 |
| Ultrasound of heart blood flow, valves and chambers | 29 | $481 | $17 |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | 29 | $87 | $3 |
2013: 9 services
| Anesthesia for procedure to assess heart electrical activity | 52 | $19,524 | $368 |
| Anesthesia for procedure on heart and large blood vessels using heart-lung machine (1 year or older) | 16 | $11,790 | $737 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 42 | $4,572 | $104 |
| Insertion of artery tube for blood sampling or infusion through skin | 74 | $3,241 | $43 |
| Anesthesia for procedure to correct abnormal heart rhythm | 25 | $2,448 | $94 |
| Insertion of tube in pulmonary artery for monitoring | 18 | $1,970 | $109 |
| Insertion of probe in esophagus for heart ultrasound | 54 | $1,936 | $35 |
| Ultrasound of heart with probe in esophagus, with report | 17 | $1,639 | $91 |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | 22 | $71 | $3 |
Money from drug and device companies
$33 in 2025
| 2025 | 1 | 1 | None | $33 |
| 2022 | 1 | 1 | None | $18 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Stryker | Artix Mt | $33 | 1 payment
|
See the published payment
| Stryker | Meals · 2025-12-09 | Artix Mt | $33 |
See earlier years (2022)
2022: $18
| Olympus America | Single Use Splinting Tube | $18 | 1 payment
|
Professional record
- NPI
- 1215160932
- Licence
- CA A115394, NY 247142California A115394: Current · expires 2027-01-31
- Trained
- University of Louisville School of Medicine, 2006 · 20 years ago
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Federal specialty code 207L00000X (207L00000X)
- Mailing address
- 325 Distel Cir, Los Altos, CA, 94022
- NPI first listed
- 2009-08-27
- NPI last updated
- 2020-05-29
- NPI record certified
- 2020-05-29
This is when the NPI record was last certified, not a medical board exam.