Karl Zheng, MD
Anesthesiology · 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.
- Offices
- 2
Offices
2 locations · County of Santa Clara · Permanente Medical Group Inc
Looking this up.
Hospitals listed: Stanford Health Care. 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. Zheng’s office to ask if they take your plan before you enroll.
California Medical Board record
Licence A97667 · Current
Licensed to practise in California · since 2006 · expires 2028-03-31 · Columbia University College of Physicians and Surgeons.
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.
- Stanford Health CareStanford, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of Stanford Health Care, which runs 3 hospitalsHome of Stanford Cancer Institute, a National Cancer Institute designated comprehensive cancer centrePatients rate it 4 of 5 · 83% would definitely recommend itOverall rating: 5 of 5 starsWorse than the national rate — Perioperative pulmonary embolism or deep vein thrombosis rate: 5.31 (4.24 to 6.37) · 8,661 cases, Jul 2022 – Jun 2024Worse than the national rate — Rate of inpatient admissions for patients receiving outpatient chemotherapy: 14.1 (12.7 to 15.7) · 2,191 cases, Jan 2024 – Dec 2024Better than the national rate — Postoperative respiratory failure rate: 4.08 (1.95 to 6.21) · 5,296 cases, Jul 2022 – Jun 2024Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.317, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.446, Oct 2024 – Sep 2025Better than the national rate — SSI - Colon Surgery: 0.241, Oct 2024 – Sep 2025Better than the national rate — Ratio of unplanned hospital visits after hospital outpatient surgery: 0.7 (0.6 to 0.9) · 3,348 cases, Jan 2024 – Dec 2024
See every measure and the patient survey for Stanford Health Care
Behind the star rating — Deaths: 5 better, 3 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 measures. Readmissions: 2 better, 5 the same, 4 worse of 11 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 5.31 (4.24 to 6.37) · 8,661 cases | Worse | Jul 2022 – Jun 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 14.1 (12.7 to 15.7) · 2,191 cases | Worse | Jan 2024 – Dec 2024 |
| Postoperative respiratory failure rateComplications and deaths | 4.08 (1.95 to 6.21) · 5,296 cases | Better | Jul 2022 – Jun 2024 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.317 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.446 | Better | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0.241 | Better | Oct 2024 – Sep 2025 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.7 (0.6 to 0.9) · 3,348 cases | Better | Jan 2024 – Dec 2024 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.06 (0.45 to 1.67) · 5,374 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 0.86 (0.72 to 1) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 166.09 (137.88 to 194.3) · 470 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 1.1 · 192 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 6.4 · 146 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 9.7 · 253 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 6.3 · 880 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 10.3 · 935 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 8.7 · 501 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 2.1 · 7,730 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.13 (0 to 0.27) · 20,799 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.28 (0.14 to 0.43) · 23,182 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 0.94 (0.2 to 1.68) · 5,694 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.36 (1.54 to 3.19) · 7,846 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 5.2 (3.76 to 6.64) · 5,603 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.38 (0.23 to 2.53) · 2,211 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.52 (0.21 to 0.83) · 19,915 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.6 · 416 cases | None | Apr 2023 – Mar 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.869 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.857 | No different | Oct 2024 – Sep 2025 |
| SSI - Abdominal HysterectomyInfections | 0.368 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 16.2 · 247 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 20.5 · 1,021 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 47.8 · 258 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -1.6 · 990 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 20.8 · 976 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.5 · 959 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.2 (4.4 to 6.2) · 2,191 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.1 · 425 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 9.6 · 158 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 19.6 · 183 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 12.7 (10.4 to 15.4) · 4,578 cases | No different | Jan 2022 – Dec 2024 |
What patients said (6,810 patients answered, 25% of those asked)
| Cleanliness | 4 |
| Nurse communication | 4 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 4 |
| Overall hospital rating | 4 |
| Quietness | 2 |
| Recommend hospital | 5 |
| Room was "always" clean | 75% |
| Nurses "always" communicated well | 82% |
| Doctors "always" communicated well | 81% |
| Staff "always" explained | 63% |
| Yes, staff "did" give patients this information | 89% |
| Yes, staff "did" give patients information about help after discharge | 89% |
| Doctors "always" explained things so they could understand | 76% |
| Doctors "always" listened carefully | 80% |
| Doctors "always" treated them with courtesy and respect | 87% |
| Patients who gave a rating of "9" or "10" (high) | 79% |
| Staff "always" explained new medications | 76% |
| Nurses "always" explained things so they could understand | 77% |
| Nurses "always" listened carefully | 79% |
| Nurses "always" treated them with courtesy and respect | 88% |
| "Always" quiet at night | 53% |
| "YES", patients would definitely recommend the hospital | 83% |
| Staff "always" explained possible side effects | 50% |
| Yes, staff "did" give patients information about possible symptoms | 90% |
Original Medicare doctor bills
$95,160
Medicare paid this office $95,160 for 262 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Anesthesia for extensive surgery on spine | 68 | $42,316 | $613 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 36 | $5,302 | $147 |
| Anesthesia for other procedure on lower spine | 13 | $4,379 | $337 |
| Insertion of artery tube for blood sampling or infusion through skin | 35 | $1,312 | $37 |
Who their Medicare patients are
262 Original Medicare patients in 2024. Average age 71 · Under 65 14% · 85 and older 7% · Women 46% · Also on Medicaid 26% · Health risk score 1.94. Above the middle of the specialty; the typical anesthesiology clinician is at 1.54.
Conditions among them: High blood pressure 75% · Diabetes 36% · Coronary heart disease 33% · Chronic kidney disease 32% · Atrial fibrillation 27% · Cancer 26% · Depression 24% · Heart failure 23% · COPD 16% · Dementia 12% · Stroke 12%.
The office billed $738,607, Medicare allowed $119,620 and paid $95,160; for 300 services of 65 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 | 262 | 300 | 71 | 1.94 | $738,607 | $95,160 |
| 2023 | 204 | 242 | 72 | 1.91 | $561,392 | $77,235 |
| 2022 | 226 | 283 | 73 | 1.73 | $692,393 | $81,949 |
| 2021 | 286 | 354 | 73 | 1.65 | $906,330 | $94,314 |
| 2020 | 237 | 334 | 72 | 1.57 | $886,681 | $90,963 |
| 2019 | 269 | 400 | 72 | 1.73 | $1,061,647 | $108,950 |
| 2018 | 295 | 456 | 70 | 1.80 | $1,178,265 | $122,417 |
| 2017 | 279 | 452 | 72 | 1.19 | $1,044,222 | $117,739 |
| 2016 | 253 | 419 | 71 | 1.60 | $963,711 | $112,931 |
| 2015 | 305 | 508 | 71 | 1.45 | $1,194,146 | $150,230 |
| 2014 | 321 | 527 | 70 | 1.45 | $1,211,281 | $165,880 |
| 2013 | 334 | 502 | 70 | 1.60 | $1,090,943 | $142,932 |
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
| Anesthesia for extensive surgery on spine | 41 | $27,152 | $646 |
| Anesthesia for other procedure on lower spine | 14 | $5,267 | $376 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 15 | $2,419 | $151 |
| Insertion of artery tube for blood sampling or infusion through skin | 33 | $1,288 | $39 |
2022: 3 services
| Anesthesia for extensive surgery on spine | 58 | $34,127 | $569 |
| Anesthesia for other procedure on lower spine | 17 | $4,967 | $292 |
| Insertion of artery tube for blood sampling or infusion through skin | 42 | $1,680 | $39 |
2021: 6 services
| Anesthesia for extensive surgery on spine | 87 | $44,030 | $495 |
| Anesthesia for other procedure on lower spine | 21 | $4,736 | $226 |
| Anesthesia for procedure on upper 2/3rd of thigh bone | 11 | $3,021 | $275 |
| Anesthesia for other procedure on skin of arms, legs, and front body | 13 | $2,881 | $222 |
| Insertion of artery tube for blood sampling or infusion through skin | 59 | $2,426 | $40 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 16 | $2,118 | $132 |
2020: 4 services
| Anesthesia for extensive surgery on spine | 115 | $56,443 | $482 |
| Anesthesia for other procedure on lower spine | 31 | $8,233 | $266 |
| Insertion of artery tube for blood sampling or infusion through skin | 89 | $3,629 | $40 |
| Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 14 | $2,661 | $190 |
2019: 3 services
| Anesthesia for extensive surgery on spine | 133 | $69,500 | $493 |
| Anesthesia for other procedure on lower spine | 46 | $13,129 | $285 |
| Insertion of artery tube for blood sampling or infusion through skin | 102 | $4,328 | $40 |
2018: 4 services
| Anesthesia for extensive surgery on spine | 121 | $65,664 | $513 |
| Anesthesia for other procedure on lower spine | 61 | $20,075 | $319 |
| Insertion of artery tube for blood sampling or infusion through skin | 120 | $4,739 | $39 |
| Ultrasonic guidance for blood vessel access | 20 | $257 | $13 |
2017: 6 services
| Anesthesia for extensive surgery on spine | 106 | $60,210 | $542 |
| Anesthesia for other procedure on lower spine | 48 | $14,741 | $301 |
| Insertion of artery tube for blood sampling or infusion through skin | 121 | $5,639 | $44 |
| Anesthesia for other procedure on upper spine | 12 | $5,568 | $428 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 12 | $1,377 | $106 |
| Ultrasonic guidance for blood vessel access | 22 | $320 | $13 |
2016: 5 services
| Anesthesia for extensive surgery on spine | 102 | $55,849 | $522 |
| Anesthesia for other procedure on lower spine | 42 | $15,166 | $361 |
| Insertion of artery tube for blood sampling or infusion through skin | 114 | $5,175 | $45 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 15 | $1,699 | $106 |
| Ultrasonic guidance for blood vessel access | 21 | $282 | $13 |
2015: 6 services
| Anesthesia for extensive surgery on spine | 129 | $81,805 | $589 |
| Anesthesia for other procedure on lower spine | 64 | $22,686 | $354 |
| Anesthesia for other procedure on brain | 16 | $8,611 | $538 |
| Insertion of artery tube for blood sampling or infusion through skin | 127 | $5,885 | $44 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 18 | $2,109 | $105 |
| Ultrasonic guidance for blood vessel access | 28 | $409 | $13 |
2014: 6 services
| Anesthesia for extensive surgery on spine | 138 | $91,365 | $626 |
| Anesthesia for other procedure on lower spine | 55 | $21,086 | $383 |
| Anesthesia for other procedure on brain | 14 | $8,729 | $623 |
| Insertion of artery tube for blood sampling or infusion through skin | 150 | $6,844 | $44 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 13 | $1,601 | $107 |
| Ultrasonic guidance for blood vessel access | 22 | $312 | $13 |
2013: 8 services
| Anesthesia for extensive surgery on spine | 82 | $49,081 | $584 |
| Anesthesia for other procedure on lower spine | 51 | $18,664 | $359 |
| Anesthesia for other procedure on brain | 20 | $11,036 | $552 |
| Anesthesia for procedure on gastrointestinal tract using an endoscope | 33 | $6,077 | $179 |
| Anesthesia for procedure for total knee joint replacement | 17 | $5,321 | $296 |
| Insertion of artery tube for blood sampling or infusion through skin | 107 | $4,745 | $43 |
| Insertion of non-tunneled central venous tube for infusion (5 years or older) | 19 | $1,965 | $103 |
| Ultrasonic guidance for blood vessel access | 23 | $329 | $13 |
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 76.5 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
Professional record
- NPI
- 1740478791
- Licence
- CA A97667California A97667: Current · expires 2028-03-31
- Trained
- Columbia University College of Physicians and Surgeons, 2005
- Group
- County of Santa Clara · Permanente Medical Group Inc
- Gender
- Male
More record details
- Sole proprietor
- Yes
- Taxonomy
- Federal specialty code 207L00000X (207L00000X)
- Mailing address
- 300 Pasteur Dr, Stanford, CA, 94305
- NPI first listed
- 2007-10-03
- NPI last updated
- 2025-05-20
- NPI record certified
- 2025-05-20
This is when the NPI record was last certified, not a medical board exam.
This office lists an electronic records connection.