Nancy C Lau, MD
Internal Medicine · San Jose
- Medicare standing
- Clear
- Enrolled, allowed to bill and order, not excluded
- Plans that list them
- 1
- 1 carrier
- Office
- 1
Offices
1 location · County of Santa Clara · 1,000 clinicians in this group
Looking this up.
Hospitals listed: Santa Clara Valley Medical Center. 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. Lau’s office at (408) 885-5000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.
| Anthem Full Dual Advantage Aligned (HMO D-SNP) | Anthem Blue Cross | Listed | Oct 3, 2026 |
California Medical Board record
Licence A90951 · Current
Licensed to practise in California · since 2005 · expires 2027-04-30 · New York Medical College.
No disciplinary actions, convictions, malpractice judgments or citations in this record.
Checkups this office reported
Medicare did not publish checkup rates for this clinician.
- Medicare’s overall office score
- 80.6 / 100
- Scores the office’s reporting and systems. It is not a grade for how the doctor treats you.
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.
- Santa Clara Valley Medical CenterSan Jose, CAAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of Santa Clara Valley Health and Hospital System, which runs 3 hospitalsPatients rate it 3 of 5 · 70% would definitely recommend itOverall rating: 2 of 5 starsWorse than the national rate — SSI - Colon Surgery: 2.572, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.563, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.256, Oct 2024 – Sep 2025Better than the national rate — MRSA Bacteremia: 0.369, Oct 2024 – Sep 2025
See every measure and the patient survey for Santa Clara Valley Medical Center
Behind the star rating — Deaths: 2 better, 6 the same, 0 worse of 8 measures. Safety: 2 better, 5 the same, 1 worse of 8 measures. Readmissions: 0 better, 10 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.
| SSI - Colon SurgeryInfections | 2.572 | Worse | Oct 2024 – Sep 2025 |
| Central Line Associated Bloodstream Infection (ICU + select Wards)Infections | 0.563 | Better | Oct 2024 – Sep 2025 |
| Clostridium Difficile (C.Diff)Infections | 0.256 | Better | Oct 2024 – Sep 2025 |
| MRSA BacteremiaInfections | 0.369 | Better | Oct 2024 – Sep 2025 |
| Abdominopelvic accidental puncture or laceration rateComplications and deaths | 1.25 (0.3 to 2.2) · 1,535 cases | No different | Jul 2022 – Jun 2024 |
| CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths | 1.07 (0.76 to 1.38) | No different | Jul 2022 – Jun 2024 |
| Death rate among surgical inpatients with serious treatable complicationsComplications and deaths | 214.59 (167.38 to 261.8) · 108 cases | No different | Jul 2022 – Jun 2024 |
| Death rate for CABG surgery patientsComplications and deaths | 2.8 · 41 cases | None | Jul 2022 – Jun 2025 |
| Death rate for COPD patientsComplications and deaths | 6 · 141 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart attack patientsComplications and deaths | 10.2 · 124 cases | None | Jul 2022 – Jun 2025 |
| Death rate for heart failure patientsComplications and deaths | 8.3 · 501 cases | None | Jul 2022 – Jun 2025 |
| Death rate for pneumonia patientsComplications and deaths | 14.9 · 653 cases | None | Jul 2022 – Jun 2025 |
| Death rate for stroke patientsComplications and deaths | 10.1 · 348 cases | None | Jul 2023 – Jun 2025 |
| Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths | 3 · 4,502 cases | None | Jul 2024 – Jun 2025 |
| Iatrogenic pneumothorax rateComplications and deaths | 0.24 (0.04 to 0.43) · 9,014 cases | No different | Jul 2022 – Jun 2024 |
| In-hospital fall-associated fracture rateComplications and deaths | 0.34 (0.15 to 0.52) · 9,216 cases | No different | Jul 2022 – Jun 2024 |
| Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths | 4.54 (2.51 to 6.58) · 1,421 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative acute kidney injury requiring dialysis rateComplications and deaths | 1.54 (0 to 3.2) · 288 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative hemorrhage or hematoma rateComplications and deaths | 2.11 (0.66 to 3.56) · 1,446 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative respiratory failure rateComplications and deaths | 11.61 (4.09 to 19.14) · 294 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative sepsis rateComplications and deaths | 7.29 (3.39 to 11.2) · 299 cases | No different | Jul 2022 – Jun 2024 |
| Postoperative wound dehiscence rateComplications and deaths | 1.9 (0.45 to 3.36) · 333 cases | No different | Jul 2022 – Jun 2024 |
| Pressure ulcer rateComplications and deaths | 0.23 (0 to 0.78) · 7,538 cases | No different | Jul 2022 – Jun 2024 |
| Rate of complications for hip/knee replacement patientsComplications and deaths | 5.4 · 94 cases | None | Apr 2023 – Mar 2025 |
| Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections | 0.735 | No different | Oct 2024 – Sep 2025 |
| SSI - Abdominal HysterectomyInfections | 2.573 | No different | Oct 2024 – Sep 2025 |
| Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits | 14.6 · 185 cases | None | Jul 2023 – Jun 2025 |
| Heart failure (HF) 30-Day Readmission RateUnplanned return visits | 22.1 · 951 cases | None | Jul 2023 – Jun 2025 |
| Hospital return days for heart attack patientsUnplanned return visits | 56.3 · 128 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for heart failure patientsUnplanned return visits | 6.4 · 644 cases | None | Jul 2022 – Jun 2025 |
| Hospital return days for pneumonia patientsUnplanned return visits | 1.3 · 699 cases | None | Jul 2022 – Jun 2025 |
| Pneumonia (PN) 30-Day Readmission RateUnplanned return visits | 16.3 · 921 cases | None | Jul 2023 – Jun 2025 |
| Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits | 5.7 (3.9 to 8.1) · 226 cases | No different | Jan 2024 – Dec 2024 |
| Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits | 12.6 (9.4 to 16.5) · 226 cases | No different | Jan 2024 – Dec 2024 |
| Rate of readmission after hip/knee replacementUnplanned return visits | 5.4 · 94 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for CABGUnplanned return visits | 11.4 · 54 cases | None | Jul 2023 – Jun 2025 |
| Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits | 20.3 · 242 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 17.4) · 702 cases | No different | Jan 2022 – Dec 2024 |
| Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits | 1 (0.7 to 1.4) · 195 cases | No different | Jan 2024 – Dec 2024 |
What patients said (4,032 patients answered, 29% of those asked)
| Cleanliness | 3 |
| Nurse communication | 3 |
| Doctor communication | 3 |
| Communication about medicines | 3 |
| Discharge information | 2 |
| Overall hospital rating | 3 |
| Quietness | 2 |
| Recommend hospital | 4 |
| Room was "always" clean | 70% |
| Nurses "always" communicated well | 73% |
| Doctors "always" communicated well | 76% |
| Staff "always" explained | 57% |
| Yes, staff "did" give patients this information | 82% |
| Yes, staff "did" give patients information about help after discharge | 82% |
| Doctors "always" explained things so they could understand | 71% |
| Doctors "always" listened carefully | 74% |
| Doctors "always" treated them with courtesy and respect | 82% |
| Patients who gave a rating of "9" or "10" (high) | 67% |
| Staff "always" explained new medications | 71% |
| Nurses "always" explained things so they could understand | 71% |
| Nurses "always" listened carefully | 69% |
| Nurses "always" treated them with courtesy and respect | 80% |
| "Always" quiet at night | 43% |
| "YES", patients would definitely recommend the hospital | 70% |
| Staff "always" explained possible side effects | 44% |
| Yes, staff "did" give patients information about possible symptoms | 83% |
Original Medicare doctor bills
$19,465
Medicare paid this office $19,465 for 135 people.
This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 101 | $15,023 | $147 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 29 | $3,424 | $114 |
Who their Medicare patients are
135 Original Medicare patients in 2024. Average age 73 · Under 65 19% · 85 and older 16% · Women 49% · Also on Medicaid 68% · Health risk score 2.48. Above the middle of the specialty; the typical internal medicine clinician is at 1.76.
Conditions among them: High blood pressure 75% · Diabetes 52% · Heart failure 50% · Coronary heart disease 44% · Chronic kidney disease 41% · Atrial fibrillation 36% · Depression 33% · COPD 28% · Stroke 25% · Dementia 24% · Cancer 14%.
The office billed $247,650, Medicare allowed $25,627 and paid $19,465; for 142 services of 9 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 | 135 | 142 | 73 | 2.48 | $247,650 | $19,465 |
| 2023 | 175 | 184 | 75 | 2.90 | $324,760 | $27,976 |
| 2022 | 140 | 143 | 73 | 2.62 | $243,454 | $28,218 |
| 2021 | 180 | 182 | 73 | 2.51 | $240,553 | $35,332 |
| 2020 | 168 | 177 | 72 | 2.76 | $193,419 | $32,460 |
| 2019 | 177 | 191 | 73 | 2.73 | $181,304 | $29,941 |
| 2018 | 179 | 182 | 73 | 2.55 | $150,198 | $28,093 |
| 2017 | 200 | 204 | 71 | 2.32 | $159,192 | $32,302 |
| 2016 | 143 | 149 | 68 | 2.21 | $95,801 | $20,977 |
| 2015 | 163 | 182 | 70 | 2.01 | $95,214 | $24,287 |
| 2014 | 173 | 184 | 70 | 1.99 | $95,282 | $26,168 |
| 2013 | 230 | 257 | 69 | 2.28 | $118,311 | $35,471 |
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: 2 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 144 | $24,156 | $160 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 11 | $1,196 | $109 |
2022: 2 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 96 | $20,462 | $209 |
| Initial hospital observation care per day, typically 70 minutes | 28 | $5,583 | $199 |
2021: 2 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 132 | $27,331 | $205 |
| Initial hospital observation care per day, typically 70 minutes | 27 | $5,098 | $189 |
2020: 3 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 128 | $26,128 | $199 |
| Initial hospital observation care per day, typically 70 minutes | 17 | $3,106 | $183 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 13 | $1,716 | $132 |
2019: 2 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 119 | $20,484 | $172 |
| Initial hospital observation care per day, typically 70 minutes | 42 | $6,658 | $155 |
2018: 3 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 102 | $17,784 | $173 |
| Initial hospital observation care per day, typically 70 minutes | 52 | $7,963 | $153 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 15 | $1,435 | $96 |
2017: 3 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 120 | $20,660 | $169 |
| Initial hospital observation care per day, typically 70 minutes | 51 | $8,142 | $160 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 12 | $1,329 | $111 |
2016: 4 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 62 | $10,708 | $173 |
| Initial hospital observation care per day, typically 70 minutes | 33 | $5,322 | $161 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 24 | $2,430 | $101 |
| Initial hospital observation care per day, typically 50 minutes | 14 | $1,511 | $108 |
2015: 3 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 94 | $15,257 | $159 |
| Initial hospital observation care per day, typically 70 minutes | 30 | $4,356 | $145 |
| Subsequent hospital care with moderate levelof medical decision making at least 50 minutes | 11 | $1,196 | $85 |
2014: 4 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 73 | $12,174 | $165 |
| Initial hospital observation care per day, typically 70 minutes | 45 | $7,044 | $157 |
| Initial hospital observation care per day, typically 50 minutes | 26 | $3,130 | $120 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 22 | $2,306 | $105 |
2013: 5 services
| Initial hospital care with moderate level of medical decision making at least 75 minutes | 77 | $13,870 | $176 |
| Initial hospital observation care per day, typically 70 minutes | 35 | $5,581 | $159 |
| Initial hospital observation care per day, typically 50 minutes | 36 | $4,192 | $116 |
| Initial hospital care with straightforward or low-level medical decision making at least 55 minutes | 33 | $3,919 | $119 |
| Initial hospital care with same-day admission and discharge with high level of medical decision making, per day at least 85 minutes | 13 | $2,451 | $189 |
Medicaid work
$5,496 in 2024
Medicaid paid $5,496 for 231 billed services this clinician did in 2024, up to 40 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.
| 1ST HOSP IP/OBS HIGH 75 | 194 | $4,734 |
| 1ST HOSPITAL IP/OBS CARE MODERATE MDM 55 MINUTES | 37 | $762 |
| 2024 | 231 | 2 | 40 | $5,496 |
| 2023 | 351 | 1 | 42 | $7,974 |
| 2022 | 289 | 1 | 32 | $9,078 |
| 2021 | 318 | 1 | 28 | $9,830 |
| 2020 | 248 | 1 | 23 | $9,177 |
| 2019 | 337 | 1 | 31 | $10,956 |
| 2018 | 249 | 1 | 32 | $7,540 |
See the largest Medicaid services in earlier years
2023
| 1ST HOSP IP/OBS HIGH 75 | 351 | $7,974 |
2022
| 1ST HOSP IP/OBS HIGH 75 | 289 | $9,078 |
2021
| 1ST HOSP IP/OBS HIGH 75 | 318 | $9,830 |
2020
| 1ST HOSP IP/OBS HIGH 75 | 248 | $9,177 |
2019
| 1ST HOSP IP/OBS HIGH 75 | 337 | $10,956 |
2018
| 1ST HOSP IP/OBS HIGH 75 | 249 | $7,540 |
Money from drug and device companies
$24 in 2025
A payment is not proof that care is biased.
| Janssen Biotech | Tremfya | $24 | 1 payment
|
See the published payment
| Janssen Biotech | Meals · 2025-12-09 | Tremfya | $24 |
Professional record
- NPI
- 1255364055
- Licence
- CA A90951California A90951: Current · expires 2027-04-30
- Trained
- New York Medical College, 2002
- Gender
- Female
More record details
- Sole proprietor
- No
- Taxonomy
- Hospitalist (208M00000X); Internal medicine (207R00000X)
- Mailing address
- 2100 Powell St, Suite 900, Emeryville, CA, 94608
- NPI first listed
- 2006-07-08
- NPI last updated
- 2017-09-20
This is when the NPI record was last certified, not a medical board exam.