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Andra Leah Blomkalns, MD

Emergency Medicine · Stanford

NPI 1275634529

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
1
1 carrier
Office
1

Offices

1 location · Stanford Health Care · 3,152 clinicians in this group

Looking this up.

Hospitals listed: Stanford Health Care. 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. Blomkalns’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

Plans whose provider directory lists this clinician
DualConnect (HMO D-SNP)Santa Clara Family Health PlanListedSep 1, 2026

California Medical Board record

Licence C156810 · Current

Licensed to practise in California · since 2018 · expires 2028-07-31 · Louisiana State University School of Medicine in Shreveport.

No disciplinary actions, convictions, malpractice judgments or citations in this record.

State licence records

1 licence

  • Texas Q4038Physician License · since 2015 · expires 2028-05-31
    ActiveNo 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.

  • 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 it
    Overall 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.

Every scored measure at Stanford Health Care
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths5.31 (4.24 to 6.37) · 8,661 casesWorseJul 2022 – Jun 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits14.1 (12.7 to 15.7) · 2,191 casesWorseJan 2024 – Dec 2024
Postoperative respiratory failure rateComplications and deaths4.08 (1.95 to 6.21) · 5,296 casesBetterJul 2022 – Jun 2024
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.317BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.446BetterOct 2024 – Sep 2025
SSI - Colon SurgeryInfections0.241BetterOct 2024 – Sep 2025
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits0.7 (0.6 to 0.9) · 3,348 casesBetterJan 2024 – Dec 2024
Abdominopelvic accidental puncture or laceration rateComplications and deaths1.06 (0.45 to 1.67) · 5,374 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths0.86 (0.72 to 1)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths166.09 (137.88 to 194.3) · 470 casesNo differentJul 2022 – Jun 2024
Death rate for CABG surgery patientsComplications and deaths1.1 · 192 casesNoneJul 2022 – Jun 2025
Death rate for COPD patientsComplications and deaths6.4 · 146 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths9.7 · 253 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths6.3 · 880 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths10.3 · 935 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths8.7 · 501 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths2.1 · 7,730 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.13 (0 to 0.27) · 20,799 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.28 (0.14 to 0.43) · 23,182 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths0.94 (0.2 to 1.68) · 5,694 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.36 (1.54 to 3.19) · 7,846 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths5.2 (3.76 to 6.64) · 5,603 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.38 (0.23 to 2.53) · 2,211 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.52 (0.21 to 0.83) · 19,915 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths3.6 · 416 casesNoneApr 2023 – Mar 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.869No differentOct 2024 – Sep 2025
MRSA BacteremiaInfections0.857No differentOct 2024 – Sep 2025
SSI - Abdominal HysterectomyInfections0.368No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits16.2 · 247 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits20.5 · 1,021 casesNoneJul 2023 – Jun 2025
Hospital return days for heart attack patientsUnplanned return visits47.8 · 258 casesNoneJul 2022 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits-1.6 · 990 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits20.8 · 976 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits16.5 · 959 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits5.2 (4.4 to 6.2) · 2,191 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits5.1 · 425 casesNoneJul 2023 – Jun 2025
Rate of readmission for CABGUnplanned return visits9.6 · 158 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits19.6 · 183 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits12.7 (10.4 to 15.4) · 4,578 casesNo differentJan 2022 – Dec 2024

What patients said (6,810 patients answered, 25% of those asked)

Patient survey stars by topic at Stanford Health Care
Cleanliness4
Nurse communication4
Doctor communication4
Communication about medicines3
Discharge information4
Overall hospital rating4
Quietness2
Recommend hospital5
Share of patients giving the best answer at Stanford Health Care
Room was "always" clean75%
Nurses "always" communicated well82%
Doctors "always" communicated well81%
Staff "always" explained63%
Yes, staff "did" give patients this information89%
Yes, staff "did" give patients information about help after discharge89%
Doctors "always" explained things so they could understand76%
Doctors "always" listened carefully80%
Doctors "always" treated them with courtesy and respect87%
Patients who gave a rating of "9" or "10" (high)79%
Staff "always" explained new medications76%
Nurses "always" explained things so they could understand77%
Nurses "always" listened carefully79%
Nurses "always" treated them with courtesy and respect88%
"Always" quiet at night53%
"YES", patients would definitely recommend the hospital83%
Staff "always" explained possible side effects50%
Yes, staff "did" give patients information about possible symptoms90%

Original Medicare doctor bills

$20,413

Medicare paid this office $20,413 for 140 people.

This is what Medicare paid the clinician — not Medicare Advantage, and not the pharmacy.

Largest Original Medicare bills
Emergency department visit with high level of medical decision making90$13,055$145
Critical care, first 30-74 minutes18$3,354$186
Emergency department visit with moderate level of medical decision making24$2,431$97

Who their Medicare patients are

140 Original Medicare patients in 2024. Average age 74 · Under 65 12% · 85 and older 17% · Women 51% · Also on Medicaid 37% · Health risk score 2.14. Above the middle of the specialty; the typical emergency medicine clinician is at 2.01.

Conditions among them: High blood pressure 75% · Coronary heart disease 45% · Diabetes 36% · Heart failure 36% · Chronic kidney disease 36% · Atrial fibrillation 35% · Depression 27% · COPD 20% · Cancer 19% · Stroke 17% · Dementia 14%.

The office billed $130,083, Medicare allowed $26,235 and paid $20,413; for 156 services of 12 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

Original Medicare by year
2024140156742.14$130,083$20,413
2023141167762.20$127,238$20,794
2022133150742.01$85,263$17,855
2021143156742.22$89,113$18,216
2020138170752.16$99,203$18,288
2019126144762.21$96,746$18,661
2018229249713.36$137,377$27,501
2017265286702.83$163,267$35,011
2016277298713.42$155,925$32,924
2015246280653.04$118,073$28,436
2014231310582.35$79,493$24,237
2013285389572.85$107,972$31,842

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

Original Medicare services billed in 2023
Emergency department visit with high level of medical decision making75$11,470$153
Emergency department visit with moderate level of medical decision making37$4,051$107
Critical care, first 30-74 minutes13$2,501$192
Emergency department visit with low level of medical decision making13$759$58

2022: 3 services

Original Medicare services billed in 2022
Emergency department visit with moderate level of medical decision making73$8,681$119
Emergency department visit with high level of medical decision making43$7,106$165
Emergency department visit with straightforward medical decision making12$503$42

2021: 3 services

Original Medicare services billed in 2021
Emergency department visit with moderate level of medical decision making58$6,833$118
Emergency department visit with high level of medical decision making39$6,625$170
Hospital observation care on day of discharge19$1,546$81

2020: 4 services

Original Medicare services billed in 2020
Emergency department visit with high level of medical decision making73$11,439$155
Hospital observation care on day of discharge21$1,353$64
Emergency department visit with moderate level of medical decision making14$1,277$91
Emergency department visit with low level of medical decision making11$479$44

2019: 3 services

Original Medicare services billed in 2019
Emergency department visit with high level of medical decision making73$10,349$142
Critical care, first 30-74 minutes17$3,513$195
Emergency department visit with moderate level of medical decision making27$2,623$97

2018: 4 services

Original Medicare services billed in 2018
Emergency department visit with high level of medical decision making121$16,068$132
Emergency department visit with moderate level of medical decision making69$6,011$86
Critical care, first 30-74 minutes17$3,009$177
Emergency department visit with low level of medical decision making18$648$36

2017: 4 services

Original Medicare services billed in 2017
Emergency department visit with high level of medical decision making176$23,714$132
Critical care, first 30-74 minutes27$4,948$177
Emergency department visit with moderate level of medical decision making43$3,865$88
Emergency department visit with low level of medical decision making14$540$39

2016: 3 services

Original Medicare services billed in 2016
Emergency department visit with high level of medical decision making164$22,374$133
Emergency department visit with moderate level of medical decision making77$7,010$89
Emergency department visit with low level of medical decision making24$1,178$49

2015: 5 services

Original Medicare services billed in 2015
Emergency department visit with high level of medical decision making112$15,375$135
Emergency department visit with moderate level of medical decision making91$7,902$87
Critical care, first 30-74 minutes11$1,958$178
Emergency department visit with low level of medical decision making13$558$43
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only17$99$6

2014: 4 services

Original Medicare services billed in 2014
Emergency department visit with high level of medical decision making81$10,877$134
Emergency department visit with moderate level of medical decision making110$9,476$85
Emergency department visit with low level of medical decision making21$958$44
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only65$425$7

2013: 4 services

Original Medicare services billed in 2013
Emergency department visit with high level of medical decision making126$17,282$130
Emergency department visit with moderate level of medical decision making115$9,161$79
Emergency department visit with low level of medical decision making22$971$44
Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only79$518$6

Medicaid work

$10,198 in 2024

Medicaid paid $10,198 for 83 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.

Largest Medicaid services in 2024
EMERGENCY DEPARTMENT VISIT HIGH MDM83$10,198
Medicaid work by year
202483115$10,198
202313113$878
202232116$2,161
202127114$1,884
201813113$830
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
EMERGENCY DEPT VISIT MOD MDM13$878

2022

Largest Medicaid services in 2022
EMERGENCY DEPT VISIT MOD MDM32$2,161

2021

Largest Medicaid services in 2021
EMERGENCY DEPT VISIT MOD MDM27$1,884

2018

Largest Medicaid services in 2018
EMERGENCY DEPT VISIT MOD MDM13$830

Money from drug and device companies

Research money

Money a company paid to run a study. Where it went to their institution, the clinician is named as an investigator and did not receive it; the amount covers the whole study, often across many sites.

Research payments by company and study
Eli Lilly and Company · A Randomized, Double Blind, Placebo Controlled, Phase 2 Study To Evaluate the Efficacy and Safety of Ly3819253 and Ly3832479 in Participants With Mild To Moderate Covid-19 Illness · 2022Their institution$92,616
Eli Lilly and Company · A Randomized, Double Blind, Placebo Controlled, Phase 2 Study To Evaluate the Efficacy and Safety of Ly3819253 and Ly3832479 in Participants With Mild To Moderate Covid-19 Illness · 2020This clinician$71,106
Eli Lilly and Company · A Randomized, Double Blind, Placebo Controlled, Phase 2 Study To Evaluate the Efficacy and Safety of Ly3819253 and Ly3832479 in Participants With Mild To Moderate Covid-19 Illness · 2020Their institution$58,503
Eli Lilly and Company · A Randomized, Double Blind, Placebo Controlled, Phase 2 Study To Evaluate the Efficacy and Safety of Ly3819253 and Ly3832479 in Participants With Mild To Moderate Covid-19 Illness · 2021Their institution$35,917
Eli Lilly and Company · A Randomized, Double-Blind, Placebo-Controlled, Phase 2 Study To Evaluate the Efficacy and Safety of Mono and Combination Therapy With Monoclonal Antibodies in Participants With Mild To Moderate Covid-19 Illness (Blaze-4) · 2022Their institution$34,214
BrainScope Company, Inc. · Follow-Up of Mtbi Patients Discharged From the Ed Using Standard Clinical Triage Including Brainscope One · 2024Their institution$33,971
Eli Lilly and Company · A Randomized, Double-Blind, Placebo-Controlled, Phase 2 Study To Evaluate the Efficacy and Safety of Mono and Combination Therapy With Monoclonal Antibodies in Participants With Mild To Moderate Covid-19 Illness (Blaze-4) · 2020Their institution$1,173
Eli Lilly and Company · A Randomized, Double-Blind, Placebo-Controlled, Phase 2 Study To Evaluate the Efficacy and Safety of Mono and Combination Therapy With Monoclonal Antibodies in Participants With Mild To Moderate Covid-19 Illness (Blaze-4) · 2021Their institution$15

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
1275634529
Licence
CA C156810, OH 35-075336, TX Q4038California C156810: Current · expires 2028-07-31Texas Q4038: Active
Trained
Louisiana State University School of Medicine in Shreveport, 1993
Gender
Female
More record details
Sole proprietor
No
Medicaid ID
OH 2154065
Taxonomy
Federal specialty code 207P00000X (207P00000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2006-09-26
NPI last updated
2024-03-14
NPI record certified
2024-03-14

This is when the NPI record was last certified, not a medical board exam.

Extra NPI addresses: 5323 Harry Hines Boulevard, Dallas, TX, 75390