Luke Karl, MD
Anesthesiology · Walnut Creek
- 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 · John Muir Trauma Physicians Billing Service · Cep America - Anesthesia PC
Looking this up.
Hospitals listed: John Muir Medical Center - Concord Campus · John Muir Medical Center - Walnut Creek Campus. 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. Karl’s office at (925) 939-3000 to ask if they take your plan before you enroll.
Hospitals they work in
2 hospitals
These rate the hospital, not this clinician. Most measures at most hospitals are no different from the national rate.
- John Muir Medical Center - Concord CampusConcord, CAAcute Care Hospital · Voluntary non-profit - Private · Has an emergency departmentPart of John Muir Health, which runs 3 hospitalsPatients rate it 3 of 5 · 77% would definitely recommend itOverall rating: 4 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.235, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.675, Oct 2024 – Sep 2025
- John Muir Medical Center - Walnut Creek CampusWalnut Creek, CAAcute Care Hospital · Voluntary non-profit - Other · Has an emergency department · Birthing-friendlyPart of John Muir Health, which runs 3 hospitalsPatients rate it 3 of 5 · 77% would definitely recommend itOverall rating: 2 of 5 starsWorse than the national rate — Abdominopelvic accidental puncture or laceration rate: 2.01 (1.17 to 2.85) · 2,206 cases, Jul 2022 – Jun 2024Worse than the national rate — Death rate among surgical inpatients with serious treatable complications: 222.42 (177.82 to 267.02) · 120 cases, Jul 2022 – Jun 2024Worse than the national rate — Pressure ulcer rate: 1.4 (0.91 to 1.9) · 9,764 cases, Jul 2022 – Jun 2024Worse than the national rate — SSI - Colon Surgery: 2.734, Oct 2024 – Sep 2025Better than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.536, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.341, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.455, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.245, Oct 2024 – Sep 2025
See every measure and the patient survey for John Muir Medical Center - Concord Campus
Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 0 better, 7 the same, 0 worse of 7 measures. Readmissions: 1 better, 9 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.
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.235 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.675 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.11 (0.21 to 2) · 1,612 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.02 (0.77 to 1.28) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 184.13 (136.65 to 231.6) · 86 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 1.2 · 175 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 7.6 · 124 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 10.4 · 172 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 8 · 537 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 13.5 · 434 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 13 · 215 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3.8 · 3,208 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.32 (0.13 to 0.51) · 7,626 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.23 (0.04 to 0.41) · 8,660 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.1 (1.29 to 4.91) · 2,723 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.21 (0 to 2.51) · 1,208 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 3 (1.7 to 4.3) · 2,355 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 7.77 (3.24 to 12.3) · 1,216 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 3.43 (0.43 to 6.43) · 1,253 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.93 (0.47 to 3.4) · 388 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 1.14 (0.58 to 1.69) · 6,288 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.1 · 263 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.636 | No different | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.254 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 0.904 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 13.5 · 312 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 19.1 · 768 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | -6.8 · 295 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -3.1 · 648 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 31.1 · 433 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 17.1 · 504 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 6.7 (5.1 to 8.8) · 476 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 12.9 (10.5 to 15.7) · 476 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 6.1 · 250 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 8.8 · 154 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 21.7 · 186 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 13.4 (9.9 to 17.9) · 192 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 1 (0.7 to 1.2) · 546 cases | No different | Jan 2024 – Dec 2024 |
What patients said (521 patients answered, 23% of those asked)
| Cleanliness | 4 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 2 |
| Discharge information | 3 |
| Overall hospital rating | 3 |
| Quietness | 2 |
| Recommend hospital | 4 |
| Room was "always" clean | 72% |
| Nurses "always" communicated well | 78% |
| Doctors "always" communicated well | 80% |
| Staff "always" explained | 57% |
| Yes, staff "did" give patients this information | 86% |
| Yes, staff "did" give patients information about help after discharge | 88% |
| Doctors "always" explained things so they could understand | 76% |
| Doctors "always" listened carefully | 79% |
| Doctors "always" treated them with courtesy and respect | 84% |
| Patients who gave a rating of "9" or "10" (high) | 72% |
| Staff "always" explained new medications | 70% |
| Nurses "always" explained things so they could understand | 77% |
| Nurses "always" listened carefully | 73% |
| Nurses "always" treated them with courtesy and respect | 83% |
| "Always" quiet at night | 46% |
| "YES", patients would definitely recommend the hospital | 77% |
| Staff "always" explained possible side effects | 44% |
| Yes, staff "did" give patients information about possible symptoms | 84% |
See every measure and the patient survey for John Muir Medical Center - Walnut Creek Campus
Behind the star rating — Deaths: 3 better, 2 the same, 2 worse of 7 measures. Safety: 2 better, 5 the same, 1 worse of 8 measures. Readmissions: 3 better, 5 the same, 2 worse of 10 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 2.01 (1.17 to 2.85) · 2,206 cases | Worse | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 222.42 (177.82 to 267.02) · 120 cases | Worse | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 1.4 (0.91 to 1.9) · 9,764 cases | Worse | Jul 2022 – Jun 2024 |
| SSI - Colon SurgeryInfections | 2.734 | Worse | Oct 2024 – Sep 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.536 | Better | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.341 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.455 | Better | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.245 | Better | Oct 2024 – Sep 2025 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.14 (0.87 to 1.4) | No different | Jul 2022 – Jun 2024 |
| Death rate for COPD patientsComplications and deaths | 6.4 · 131 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 10 · 148 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 9.8 · 695 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 12.5 · 827 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 14.1 · 509 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3.4 · 4,483 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.35 (0.18 to 0.53) · 11,630 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.22 (0.05 to 0.39) · 11,793 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.33 (1.69 to 4.96) · 3,268 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.37 (0 to 2.94) · 1,631 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.76 (1.43 to 4.09) · 3,066 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 6.12 (0.22 to 12.02) · 1,580 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 4.43 (1.21 to 7.64) · 1,594 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.82 (0.4 to 3.24) · 685 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 3.9 · 615 cases | None | Apr 2023 – Mar 2025 |
| SSI - Abdominal HysterectomyInfections | 1.88 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.7 · 93 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 19.9 · 729 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | -30.1 · 91 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -13 · 736 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 34.8 · 842 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.7 · 818 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.3 (3.3 to 8.4) · 28 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 10.8 (7.2 to 15.5) · 28 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 4.9 · 584 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 20.4 · 139 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 17.9) · 222 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 1.1 (0.8 to 1.5) · 321 cases | No different | Jan 2024 – Dec 2024 |
What patients said (758 patients answered, 24% of those asked)
| Cleanliness | 3 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 2 |
| Discharge information | 4 |
| Overall hospital rating | 3 |
| Quietness | 3 |
| Recommend hospital | 4 |
| Room was "always" clean | 65% |
| Nurses "always" communicated well | 75% |
| Doctors "always" communicated well | 76% |
| Staff "always" explained | 55% |
| Yes, staff "did" give patients this information | 87% |
| Yes, staff "did" give patients information about help after discharge | 87% |
| Doctors "always" explained things so they could understand | 70% |
| Doctors "always" listened carefully | 75% |
| Doctors "always" treated them with courtesy and respect | 82% |
| Patients who gave a rating of "9" or "10" (high) | 69% |
| Staff "always" explained new medications | 68% |
| Nurses "always" explained things so they could understand | 71% |
| Nurses "always" listened carefully | 72% |
| Nurses "always" treated them with courtesy and respect | 83% |
| "Always" quiet at night | 53% |
| "YES", patients would definitely recommend the hospital | 77% |
| Staff "always" explained possible side effects | 42% |
| Yes, staff "did" give patients information about possible symptoms | 87% |
Money from drug and device companies
$39 in 2025
A payment is not proof that care is biased.
| Medtronic | Bis | $39 | 2 payments
|
See all 2 published payments
| Medtronic | Meals · 2025-09-11 | Invos | $18 |
| Medtronic | Meals · 2025-04-22 | Bis | $21 |
Professional record
- NPI
- 1407436058
- Trained
- Georgetown University School of Medicine, 2021
- Group
- John Muir Trauma Physicians Billing Service · Cep America - Anesthesia PC
- Gender
- Male
More record details
- Sole proprietor
- Yes
- Taxonomy
- Federal specialty code 207L00000X (207L00000X); Student in a training program (390200000X)
- Mailing address
- 751 S Bascom Ave, San Jose, CA, 95128
- NPI first listed
- 2021-04-08
- NPI last updated
- 2025-09-18
- NPI record certified
- 2025-09-18
This is when the NPI record was last certified, not a medical board exam.