Sebastian Ko, MD
Orthopedic Surgery · Mountain View
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 2
- 2 carriers
- Offices
- 4
Offices
4 locations · Sutter Bay Medical Foundation · 3,783 clinicians in this group
Looking this up.
Hospitals listed: El Camino Health. That is not proof they admit you there this week.
Plans that list them
2 plans · 2 carriers
A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Ko’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
2 of 2 plans
| Alignment Health Sutter Advantage +More (HMO) | Alignment Health Plan | Listed | Oct 3, 2026 |
| DualConnect (HMO D-SNP) | Santa Clara Family Health Plan | Listed | Sep 1, 2026 |
State licence records
1 licence
- Illinois 036148139Licensed Physician And Surgeon · since 2019 · expires 2026-08-31ActiveNo board action on this licenceCheck it with the state
We check Colorado, Delaware, Florida, Illinois, Maryland, New Jersey, New York, Tennessee, Texas, Virginia, Washington, plus California above. A state that is not in this list has not been checked, which is not the same as clear.
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.
- El Camino HealthMountain View, CAAcute Care Hospital · Government - Hospital District or Authority · Has an emergency department · Birthing-friendlyPart of El Camino Health, which runs 2 hospitalsPatients rate it 4 of 5 · 80% would definitely recommend itOverall rating: 4 of 5 starsBetter than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.291, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.393, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0, Oct 2024 – Sep 2025
See every measure and the patient survey for El Camino Health
Behind the star rating — Deaths: 3 better, 5 the same, 0 worse of 8 measures. Safety: 3 better, 5 the same, 0 worse of 8 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 | 0.291 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.393 | Better | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 0.96 (0.12 to 1.79) · 2,340 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.02 (0.76 to 1.28) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 167.38 (125.03 to 209.73) · 96 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 2.6 · 68 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 7.1 · 185 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 11.8 · 200 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 8.9 · 814 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 13 · 842 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 9.6 · 361 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 2.6 · 4,633 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.16 (0 to 0.34) · 11,474 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.27 (0.1 to 0.45) · 11,626 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 3.14 (1.39 to 4.9) · 2,814 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 2 (0.61 to 3.39) · 1,327 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.11 (0.8 to 3.43) · 2,641 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 9.39 (4.18 to 14.6) · 1,287 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 6.57 (3.47 to 9.68) · 1,308 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 2.14 (0.71 to 3.57) · 827 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.6 (0.05 to 1.15) · 9,460 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 4.5 · 122 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.993 | No different | Oct 2024 – Sep 2025 |
| SSI - Abdominal HysterectomyInfections | 0.706 | No different | Oct 2024 – Sep 2025 |
| SSI - Colon SurgeryInfections | 1.376 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 15.5 · 218 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 19.5 · 962 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 3.8 · 200 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | -17 · 922 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 18.6 · 860 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 18.7 · 827 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 6.1 (4.5 to 8.2) · 313 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 13.4 (10.6 to 16.5) · 313 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 6.1 · 144 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 10.3 · 80 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 20.7 · 237 cases | None | Jul 2023 – Jun 2025 |
| Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits | 12.8 (10 to 16.1) · 1,639 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 0.9 (0.8 to 1.1) · 1,619 cases | No different | Jan 2024 – Dec 2024 |
What patients said (1,535 patients answered, 22% of those asked)
| Cleanliness | 4 |
| Nurse communication | 4 |
| Doctor communication | 4 |
| Communication about medicines | 3 |
| Discharge information | 3 |
| Overall hospital rating | 4 |
| Quietness | 2 |
| Recommend hospital | 5 |
| Room was "always" clean | 75% |
| Nurses "always" communicated well | 79% |
| Doctors "always" communicated well | 81% |
| Staff "always" explained | 61% |
| Yes, staff "did" give patients this information | 86% |
| Yes, staff "did" give patients information about help after discharge | 86% |
| 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) | 76% |
| Staff "always" explained new medications | 76% |
| Nurses "always" explained things so they could understand | 75% |
| Nurses "always" listened carefully | 76% |
| Nurses "always" treated them with courtesy and respect | 87% |
| "Always" quiet at night | 47% |
| "YES", patients would definitely recommend the hospital | 80% |
| Staff "always" explained possible side effects | 46% |
| Yes, staff "did" give patients information about possible symptoms | 86% |
Original Medicare doctor bills
$10,432
Medicare paid this office $10,432 for 44 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Return visit (30+ min) | 19 | $1,318 | $63 |
| New patient visit (45+ min) | 13 | $885 | $68 |
Procedures Medicare counted
| Lower limb (leg) arthroscopy (minimally invasive joint repair) | 12 | More than 83% of doctors who do this |
| Removal of tissue | 1-10 | None |
| Upper limb (arm) arthroscopy (minimally invasive joint repair) | 1-10 | None |
Who their Medicare patients are
44 Original Medicare patients in 2024. Average age 76 · Women 64% · Also on Medicaid 55% · Health risk score 1.80. Sicker patients than 9 in 10 peers; the typical orthopedic surgery clinician is at 1.13.
Conditions among them: High blood pressure 75% · Diabetes 34% · Coronary heart disease 34% · Depression 32% · Heart failure 30% · Chronic kidney disease 27% · COPD 27%.
The office billed $42,145, Medicare allowed $14,312 and paid $10,432; for 70 services of 13 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 | 44 | 70 | 76 | 1.80 | $42,145 | $10,432 |
| 2023 | 101 | 163 | 74 | 1.82 | $73,320 | $19,076 |
| 2022 | 94 | 174 | 74 | 2.03 | $89,988 | $24,999 |
| 2021 | 102 | 200 | 74 | 1.95 | $127,106 | $35,490 |
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: 3 services
| Return visit (30+ min) | 49 | $4,198 | $66 |
| New patient visit (45+ min) | 42 | $4,064 | $97 |
| Short return visit (20+ min) | 27 | $1,543 | $51 |
2022: 4 services
| Return visit (30+ min) | 40 | $5,453 | $78 |
| New patient visit (45+ min) | 46 | $4,629 | $101 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 14 | $2,334 | $167 |
| Short return visit (20+ min) | 15 | $736 | $46 |
2021: 5 services
| New patient visit (45+ min) | 44 | $4,843 | $110 |
| Return visit (30+ min) | 30 | $3,245 | $83 |
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 12 | $1,717 | $143 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 12 | $1,277 | $106 |
| Short return visit (20+ min) | 19 | $1,043 | $52 |
Medicaid work
$762 in 2024
Medicaid paid $762 for 17 billed services this clinician did in 2024, up to 15 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.
| Return visit (30+ min) | 17 | $762 |
| 2024 | 17 | 1 | 15 | $762 |
| 2023 | 244 | 3 | 23 | $10,684 |
| 2022 | 157 | 2 | 25 | $7,659 |
| 2021 | 59 | 2 | 17 | $2,777 |
See the largest Medicaid services in earlier years
2023
| Return visit (30+ min) | 175 | $7,122 |
| New patient visit (45+ min) | 57 | $3,239 |
| Short return visit (20+ min) | 12 | $323 |
2022
| Return visit (30+ min) | 113 | $5,034 |
| New patient visit (45+ min) | 44 | $2,625 |
2021
| New patient visit (45+ min) | 45 | $2,240 |
| Return visit (30+ min) | 14 | $537 |
Money from drug and device companies
$156 in 2025
| 2025 | 4 | 5 | None | $156 |
| 2023 | 3 | 5 | None | $119 |
| 2022 | 4 | 5 | None | $1,299 |
| 2021 | 2 | 2 | None | $1,220 |
| 2020 | 2 | 2 | None | $6,682 |
| 2019 | 2 | 13 | None | $7,649 |
Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.
A payment is not proof that care is biased.
| Smith+Nephew | Bone Anchors With Arthroscopic Delivery System | $64 | 1 payment
|
| Stryker | Aequalis Ascend Flex | $49 | 2 payments
|
| Moximed | Misha Knee System, Small, Left | $22 | 1 payment
|
| Bioventus | Durolane | $20 | 1 payment
|
See all 5 published payments
| Bioventus | Meals · 2025-09-14 | Durolane | $20 |
| Smith+Nephew | Meals · 2025-08-25 | Bone Anchors With Arthroscopic Delivery System | $64 |
| Moximed | Meals · 2025-08-04 | Misha Knee System, Small, Left | $22 |
| Stryker | Meals · 2025-05-06 | Blueprint Patient Specific Instrumentation | $17 |
| Stryker | Meals · 2025-02-03 | Aequalis Ascend Flex | $32 |
See earlier years (2023, 2022, 2021, 2020, 2019)
2023: $119
| Si-Bone | None | $61 | 3 payments
|
| Orthofix Medical | Physio-Stim | $34 | 1 payment
|
| Amgen | Evenity | $25 | 1 payment
|
2022: $1,299
| Medwest Associates | None | $1,200 | 1 payment
|
| Si-Bone | None | $45 | 2 payments
|
| Catalyst OrthoScience | Catalyst Total Csr | $31 | 1 payment
|
| Vericel | Maci | $23 | 1 payment
|
2021: $1,220
| Medwest Associates | None | $1,200 | 1 payment
|
| Next Science | Surgx | $20 | 1 payment
|
2020: $6,682
| Smith+Nephew | None | $6,000 | 1 payment
|
| Medwest Associates | None | $682 | 1 payment
|
2019: $7,649
| Smith+Nephew | None | $6,000 | 1 payment
|
| Wright Medical Technology | Blueprint Psi System | $1,648 | 12 payments
|
Professional record
- NPI
- 1902367642
- Licence
- IL 036.148139Illinois 036148139: Active
- Trained
- Un of British Columbia, Faculty of Medicine, 2014
- Video visits
- Lists video visits
- Gender
- Male
More record details
- Sole proprietor
- No
- Taxonomy
- Orthopedic surgery (207X00000X); Federal specialty code 207XX0005X (207XX0005X)
- Mailing address
- Po Box 276950, Sacramento, CA, 95827
- NPI first listed
- 2019-03-26
- NPI last updated
- 2024-12-03
- NPI record certified
- 2024-12-03
This is when the NPI record was last certified, not a medical board exam.
Extra NPI addresses: 259 E Erie, Chicago, IL, 60611 · 4646 N Marine Dr, Chicago, IL, 60640