Sandra Huizar-Herrera, NP

Offices

1 location · University Healthcare Alliance · 334 clinicians in this group

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 Sandra Huizar-Herrera’s office at (408) 984-7226 to ask if they take your plan before you enroll.

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.

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Every scored measure at Stanford Health Care

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)

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Patient survey stars by topic at Stanford Health Care

Cleanliness	4
Nurse communication	4
Doctor communication	4
Communication about medicines	3
Discharge information	4
Overall hospital rating	4
Quietness	2
Recommend hospital	5

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Share of patients giving the best answer at Stanford Health Care

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

$25,205

Medicare paid this office $25,205 for 456 people.

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

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Largest Original Medicare bills

Short return visit	352	$15,274	$41
Short return visit (20+ min)	63	$3,553	$55
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza	30	$2,066	$69
Return visit (30+ min)	16	$1,577	$99
Telephone medical discussion with physician, 5-10 minutes	24	$849	$35

See all 8 services

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Every Original Medicare service billed

Short return visit	352	$15,274	$41
Short return visit (20+ min)	63	$3,553	$55
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza	30	$2,066	$69
Return visit (30+ min)	16	$1,577	$99
Telephone medical discussion with physician, 5-10 minutes	24	$849	$35
Telephone medical discussion with physician, 11-20 minutes	13	$783	$60
Detection test by immunoassay with direct visual observation for streptococcus, group a (strep)	13	$211	$16
Automated urinalysis test	48	$117	$2

Who their Medicare patients are

456 Original Medicare patients in 2024. Average age 75 · Under 65 6% · 85 and older 13% · Women 64% · Also on Medicaid 13% · Health risk score 1.11. At or below the middle of the specialty; the typical nurse practitioner clinician is at 1.42.

Conditions among them: High blood pressure 64% · Coronary heart disease 26% · Diabetes 22% · Chronic kidney disease 17% · Atrial fibrillation 17% · Depression 16% · Cancer 13% · Heart failure 11% · COPD 10% · Stroke 8% · Dementia 6%.

The office billed $129,192, Medicare allowed $36,691 and paid $25,205; for 626 services of 21 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

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Original Medicare by year

2024	456	626	75	1.11	$129,192	$25,205
2023	415	616	74	0.98	$141,609	$28,717
2022	180	216	75	1.09	$55,243	$13,288

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: 8 services

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Original Medicare services billed in 2023

Short return visit (20+ min)	174	$10,869	$59
Short return visit	208	$9,164	$41
Return visit (30+ min)	38	$3,807	$95
Detection test by immunoassay technique for severe acute respiratory syndrome coronavirus and influenza	25	$1,270	$51
Influenza vaccine split virus, preservative free	12	$863	$72
Administration of influenza virus vaccine	15	$471	$31
Removal of impacted ear wax by washing	15	$260	$17
Automated urinalysis test	23	$53	$2

2022: 3 services

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Original Medicare services billed in 2022

Short return visit (20+ min)	91	$6,981	$76
Short return visit	43	$2,035	$47
Adm sarscv2 bvl 30mcg/.3ml a	24	$1,008	$42

Medicaid work

$125,370 in 2022

Medicaid paid $125,370 for 2,675 billed services this clinician did in 2022, up to 202 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.

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Largest Medicaid services in 2022

Clinic visit/encounter, all-inclusive	728	$121,570
Short return visit (20+ min)	397	$3,197
Short return visit	244	$556
URINE PREGNANCY TEST	80	$45
Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; non-automated, without microscopy	86	$2
Most recent systolic blood pressure less than 130 mm Hg (DM) (HTN, CKD, CAD)	391	$0
Most recent diastolic blood pressure less than 80 mm Hg (HTN, CKD, CAD) (DM)	371	$0
Most recent diastolic blood pressure 80-89 mm Hg (HTN, CKD, CAD) (DM)	53	$0
Hemoglobin; by copper sulfate method, non-automated	68	$0
Blood count; spun microhematocrit	34	$0
Influenza virus vaccine, quadrivalent (IIV4), split virus, preservative free, 0.5 mL dosage, for intramuscular use	17	$0
Screening test, pure tone, air only	15	$0

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Medicaid work by year

2022	2,675	15	202	$125,370
2021	9,856	27	236	$406,357
2020	4,563	18	221	$298,273
2019	3,857	14	224	$400,340
2018	4,304	1	208	$648,737

See the largest Medicaid services in earlier years

2021

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Largest Medicaid services in 2021

Clinic visit/encounter, all-inclusive	2,418	$400,638
Short return visit (20+ min)	819	$3,578
Short return visit	1,135	$2,074
URINE PREGNANCY TEST	158	$64
Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; non-automated, without microscopy	220	$2
Most recent systolic blood pressure less than 130 mm Hg (DM) (HTN, CKD, CAD)	1,283	$0
Most recent systolic blood pressure 130-139 mm Hg (DM) (HTN, CKD, CAD)	26	$0
Most recent diastolic blood pressure less than 80 mm Hg (HTN, CKD, CAD) (DM)	1,104	$0
Most recent diastolic blood pressure 80-89 mm Hg (HTN, CKD, CAD) (DM)	275	$0
Glucose, blood by glucose monitoring device(s) cleared by the FDA specifically for home use	12	$0
Hemoglobin; by copper sulfate method, non-automated	122	$0
Blood count; spun microhematocrit	175	$0

2020

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Largest Medicaid services in 2020

Clinic visit/encounter, all-inclusive	1,839	$297,688
Short return visit	1,011	$432
Short return visit (20+ min)	442	$142
URINE PREGNANCY TEST	54	$11
Most recent systolic blood pressure less than 130 mm Hg (DM) (HTN, CKD, CAD)	291	$0
Most recent diastolic blood pressure less than 80 mm Hg (HTN, CKD, CAD) (DM)	246	$0
Most recent diastolic blood pressure 80-89 mm Hg (HTN, CKD, CAD) (DM)	53	$0
Hemoglobin; by copper sulfate method, non-automated	13	$0
Blood count; spun microhematocrit	54	$0
HEMOGLOBIN	63	$0
Influenza virus vaccine, quadrivalent (IIV4), split virus, preservative free, 0.5 mL dosage, for intramuscular use	154	$0
Screening test, pure tone, air only	85	$0

2019

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Largest Medicaid services in 2019

Clinic visit/encounter, all-inclusive	2,509	$400,047
Short return visit	265	$214
URINE PREGNANCY TEST	54	$78
Most recent systolic blood pressure less than 130 mm Hg (DM) (HTN, CKD, CAD)	13	$0
Most recent diastolic blood pressure less than 80 mm Hg (HTN, CKD, CAD) (DM)	12	$0
Urinalysis, by dip stick or tablet reagent for bilirubin, glucose, hemoglobin, ketones, leukocytes, nitrite, pH, protein, specific gravity, urobilinogen, any number of these constituents; non-automated, without microscopy	64	$0
HEMOGLOBIN	109	$0
Meningococcal recombinant protein and outer membrane vesicle vaccine, serogroup B (MenB-4C), 2 dose schedule, for intramuscular use	19	$0
Human Papillomavirus vaccine, types 6, 11, 16, 18, quadrivalent (4vHPV), 3 dose schedule, for intramuscular use	12	$0
Influenza virus vaccine, quadrivalent (IIV4), split virus, preservative free, 0.5 mL dosage, for intramuscular use	189	$0
Screening test, pure tone, air only	84	$0
Bilateral quantitative screening test of visual acuity	104	$0

2018

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Largest Medicaid services in 2018

Clinic visit/encounter, all-inclusive	4,304	$648,737

Drugs they prescribed that Part D paid

$14,325

Pharmacies billed $14,325 in 2024.

This is pharmacy cost, not the office bill, and not what patients paid.

306 generic and fewer than 11 brand-name prescriptions · $14,325 in drug cost · 132 antibiotic prescriptions to 120 people.

Part D prescriptions only. The opioid rate is opioid prescriptions as a share of all this clinician's Part D prescriptions; surgeons and pain specialists run higher than others, so it is shown against the same specialty.

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Largest Part D drug costs

Paxlovid	27	$2,858	$106
Albuterol Sulfate Hfa	21	$652	$27
Fluticasone Propionate	36	$315	$9
Nitrofurantoin Mono-Macro	25	$275	$11
Azithromycin	38	$162	$4

See all 8 drugs

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Every Part D drug this clinician prescribed

Paxlovid	27	$2,858	$106
Albuterol Sulfate Hfa	21	$652	$27
Fluticasone Propionate	36	$315	$9
Nitrofurantoin Mono-Macro	25	$275	$11
Azithromycin	38	$162	$4
Amoxicillin-Clavulanate Potass	22	$134	$6
Cephalexin	11	$113	$9
Ciprofloxacin	11	$48	$4

Year by year

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Part D prescribing by year

2024	379	257	None	None	$14,325
2023	351	257	None	11%	$12,732
2022	375	135	None	None	$17,454
2021	361	48	None	None	$14,592
2020	341	67	None	None	$21,067
2019	159	26	None	None	$9,082
2018	338	65	None	None	$26,847
2017	877	110	2% (14)	25%	$74,069
2016	143	45	None	None	$9,980

Part D prescriptions only. A drug prescribed to fewer than 11 people in a year is hidden.

See the drugs prescribed each year

2023: 6 drugs

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Part D drugs prescribed in 2023

Albuterol Sulfate Hfa	15	$470	$31
Fluticasone Propionate	35	$422	$12
Nitrofurantoin Mono-Macro	20	$306	$15
Paxlovid (Eua)	18	$189	$10
Lagevrio (Eua)	12	$105	$9
Azithromycin	22	$102	$5

2022: 10 drugs

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Part D drugs prescribed in 2022

Atorvastatin	14	$312	$22
Lisinopril	14	$272	$19
Fluticasone Propionate	24	$242	$10
Tamsulosin	19	$166	$9
Metformin	26	$139	$5
Alendronate	18	$135	$7
Losartan	13	$104	$8
Simvastatin	11	$97	$9
Furosemide	11	$53	$5
Hydrochlorothiazide	11	$24	$2

2021: 10 drugs

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Part D drugs prescribed in 2021

Alendronate	29	$373	$13
Atorvastatin	12	$231	$19
Metoprolol	12	$194	$16
Losartan	13	$145	$11
Lisinopril-Hydrochlorothiazide	14	$142	$10
Simvastatin	19	$137	$7
Metformin	21	$108	$5
Hydrochlorothiazide	15	$87	$6
Escitalopram	14	$68	$5
Metoprolol	11	$26	$2

2020: 7 drugs

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Part D drugs prescribed in 2020

Amitiza	11	$4,292	$390
Albuterol Sulfate Hfa	11	$486	$44
Levothyroxine	11	$349	$32
Atorvastatin	24	$312	$13
Alendronate	16	$229	$14
Metformin	28	$128	$5
Hydrochlorothiazide	19	$61	$3

2019: 3 drugs

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Part D drugs prescribed in 2019

Atorvastatin	33	$440	$13
Alendronate	17	$164	$10
Lisinopril-Hydrochlorothiazide	13	$97	$7

2018: 6 drugs

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Part D drugs prescribed in 2018

Atorvastatin	41	$471	$11
Metformin	40	$268	$7
Losartan	20	$166	$8
Lisinopril-Hydrochlorothiazide	16	$106	$7
Lisinopril	24	$83	$3
Amlodipine Besylate	12	$57	$5

2017: 22 drugs

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Part D drugs prescribed in 2017

Janumet	22	$11,740	$534
Victoza 3-Pak	13	$10,215	$786
Victoza 2-Pak	13	$6,888	$530
Jentadueto	11	$5,800	$527
Lantus Solostar	15	$5,629	$375
Atorvastatin	84	$1,000	$12
Ventolin Hfa	12	$640	$53
Levothyroxine	31	$371	$12
Alendronate	37	$266	$7
Losartan	30	$260	$9
Metformin	49	$249	$5
Pioglitazone	17	$247	$15
Lisinopril	54	$227	$4
Omeprazole	20	$174	$9
Amlodipine Besylate	41	$156	$4
Losartan-Hydrochlorothiazide	19	$98	$5
Nifedipine Er	11	$71	$6
Lisinopril-Hydrochlorothiazide	13	$59	$5
Tramadol	11	$47	$4
Metoprolol	17	$41	$2
Hydrochlorothiazide	11	$30	$3
Atenolol	11	$21	$2

Money from drug and device companies

$18 in 2024

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Industry payments by year

2024	1	1	None	$18
2023	1	6	None	$107
2021	1	1	None	$125

Paid work is consulting, speaking, honoraria and royalties, as opposed to meals and travel.

A payment is not proof that care is biased.

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Payments by company

Abbvie	Creon	$18	1 payment Meals for Creon · 2024-03-05 · $18

See the published payment

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Every published payment

Abbvie	Meals · 2024-03-05	Creon	$18

See earlier years (2023, 2021)

2023: $107

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Payments by company in 2023

Abbvie	Viberzi	$107	6 payments Meals for Creon · 2023-12-19 · $16 Meals for Viberzi · 2023-10-31 · $21 Meals for Viberzi · 2023-09-14 · $14 Meals for Viberzi · 2023-07-17 · $21 Meals for Creon · 2023-03-07 · $17 Meals for Creon · 2023-01-18 · $18

2021: $125

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Payments by company in 2021

Novo Nordisk	Rybelsus	$125	1 payment Meals for Rybelsus · 2021-09-01 · $125

Professional record

NPI: 1801340047
Licence: CA 95004625
Group: University Healthcare Alliance
Video visits: Lists video visits
Gender: Female

More record details

Sole proprietor: No
Taxonomy: Nurse practitioner (363L00000X); Federal specialty code 363LF0000X (363LF0000X)
Mailing address: Po Box 255228, Sacramento, CA, 95865
NPI first listed: 2016-08-04
NPI last updated: 2026-08-19
NPI record certified: 2026-08-19

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

Extra NPI addresses: 344 E 6th St, Madera, CA, 93638 · 705 W Pecan Ave, Madera, CA, 93637