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Maria Norma Villalon Landeros, MD

Family Practice · Stanford

NPI 1477081966

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
19
3 carriers
Offices
2

Offices

2 locations · Stanford Health Care · Roots Community Health Center

Looking this up.

Hospitals listed: Stanford Health Care. That is not proof they admit you there this week.

Plans that list them

19 plans · 3 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Landeros’s office to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

19 of 19 plans

Plans whose provider directory lists this clinician
Advantage Care (HMO)Align Senior CareListedOct 1, 2026
Premier Care (HMO I-SNP)Align Senior CareListedOct 1, 2026
Senior Care (HMO I-SNP)Align Senior CareListedOct 1, 2026
Alignment Health BreathEasy (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Clarity (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Harmony (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes CalPlus (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health Heart & Diabetes Care (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Heart & Diabetes Choice (HMO C-SNP)Alignment Health PlanListedSep 28, 2026
Alignment Health Honor+ Plan (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health My Choice CalCare (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health Silicon (HMO C-SNP)Alignment Health PlanListedOct 3, 2026
Alignment Health smartHMO (HMO)Alignment Health PlanListedOct 3, 2026
Alignment Health the ONE (HMO)Alignment Health PlanListedOct 3, 2026
Central Health Classic Care Plan III (HMO)Central Health Medicare PlanListedAug 15, 2026
Central Health Dual Access Plan (HMO D-SNP)Central Health Medicare PlanListedAug 15, 2026
Central Health Embrace Choice Plan (HMO C-SNP)Central Health Medicare PlanListedAug 15, 2026
Central Health Valor Care Plan (HMO)Central Health Medicare PlanListedAug 15, 2026

California Medical Board record

Licence A157942 · Current

Licensed to practise in California · since 2018 · expires 2028-08-31 · Stanford University School of Medicine.

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

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

$12,606

Medicare paid this office $12,606 for 91 people.

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

Largest Original Medicare bills
Short return visit (20+ min)67$7,366$58
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit33$2,167$66
Return visit (30+ min)16$1,401$61
Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's24$524$15

Procedures Medicare counted

Procedure volume Medicare published
Removal of skin lesions1-10None
Removal or shaving of skin growth1-10None

Who their Medicare patients are

91 Original Medicare patients in 2024. Average age 72 · Women 67% · Also on Medicaid 36% · Health risk score 1.43. Above the middle of the specialty; the typical family practice clinician is at 1.13.

Conditions among them: High blood pressure 58% · Diabetes 45% · Coronary heart disease 24% · Chronic kidney disease 22% · Depression 18% · Cancer 15% · Atrial fibrillation 14% · Heart failure 13%.

The office billed $79,021, Medicare allowed $16,404 and paid $12,606; for 238 services of 11 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
202491238721.43$79,021$12,606
20235498721.45$37,241$5,917
202281133701.45$48,643$8,294
20214390691.70$32,457$5,302
20201924661.93$11,135$1,354

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

Original Medicare services billed in 2023
Short return visit (20+ min)36$3,090$50
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit19$1,565$82

2022: 2 services

Original Medicare services billed in 2022
Short return visit (20+ min)53$3,638$53
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit27$2,285$85

2021: 2 services

Original Medicare services billed in 2021
Short return visit (20+ min)18$2,073$53
Short return visit11$497$38

Medicaid work

$109,828 in 2024

Medicaid paid $109,828 for 2,135 billed services this clinician did in 2024, up to 69 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
Clinic visit/encounter, all-inclusive268$103,752
Short return visit (20+ min)605$5,687
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); 1 vaccine (single or combination vaccine/toxoid)143$257
Screening for depression is documented as negative, a follow-up plan is not required67$123
Handling and/or conveyance of specimen for transfer from physician office to laboratory96$8
BODY MASS INDEX DOCD334$0
Most recent systolic blood pressure less than 130 mm Hg (DM) (HTN, CKD, CAD)306$0
Most recent diastolic blood pressure less than 80 mm Hg (HTN, CKD, CAD) (DM)316$0
Medicaid work by year
20242,135869$109,828
20236,83721187$392,369
20229,70121280$601,987
20214,73918214$374,846
202032117$11,699
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
Clinic visit/encounter, all-inclusive1,065$389,470
Short return visit (20+ min)1,499$795
Zoster (shingles) vaccine (HZV), recombinant, subunit, adjuvanted, for intramuscular use19$528
Hepatitis B vaccine (HepB), adult dosage, 3 dose schedule, for intramuscular use38$508
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); each additional vaccine (single or combination vaccine/toxoid) (List separately in addition to code for primary procedure)78$387
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); 1 vaccine (single or combination vaccine/toxoid)476$366
New patient visit (30+ min)59$114
Alcohol and/or drug screening246$60
Screening for depression is documented as negative, a follow-up plan is not required459$60
Tetanus, diphtheria toxoids and acellular pertussis vaccine (Tdap), when administered to individuals 7 years or older, for intramuscular use16$41
Screening test, pure tone, air only41$20
Handling and/or conveyance of specimen for transfer from physician office to laboratory523$12

2022

Largest Medicaid services in 2022
Clinic visit/encounter, all-inclusive1,659$599,518
Short return visit (20+ min)2,165$1,067
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); 1 vaccine (single or combination vaccine/toxoid)638$341
Hepatitis B vaccine (HepB), adult dosage, 3 dose schedule, for intramuscular use21$299
Screening for depression is documented as negative, a follow-up plan is not required718$265
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); each additional vaccine (single or combination vaccine/toxoid) (List separately in addition to code for primary procedure)79$170
Zoster (shingles) vaccine (HZV), recombinant, subunit, adjuvanted, for intramuscular use20$166
Alcohol and/or drug screening460$96
Influenza virus vaccine, quadrivalent (ccIIV4), derived from cell cultures, subunit, antibiotic free, 0.5 mL dosage, for intramuscular use23$33
Influenza virus vaccine, quadrivalent (IIV4), split virus, preservative free, 0.5 mL dosage, for intramuscular use178$27
Handling and/or conveyance of specimen for transfer from physician office to laboratory475$4
BODY MASS INDEX DOCD950$0

2021

Largest Medicaid services in 2021
Clinic visit/encounter, all-inclusive1,046$372,968
Short return visit (20+ min)1,187$1,490
Periodic comprehensive preventive medicine reevaluation and management of an individual including an age and gender appropriate history, examination, counseling/anticipatory guidance/risk factor reduction interventions, and the ordering of laboratory/diagnostic procedures, established patient; adolescent (age 12 through 17 years)21$161
Alcohol and/or drug screening183$96
Screening for depression is documented as negative, a follow-up plan is not required202$59
Screening test, pure tone, air only58$33
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); 1 vaccine (single or combination vaccine/toxoid)235$18
Immunization administration (includes percutaneous, intradermal, subcutaneous, or intramuscular injections); each additional vaccine (single or combination vaccine/toxoid) (List separately in addition to code for primary procedure)47$13
Handling and/or conveyance of specimen for transfer from physician office to laboratory208$9
BODY MASS INDEX DOCD602$0
Most recent systolic blood pressure less than 130 mm Hg (DM) (HTN, CKD, CAD)313$0
Most recent systolic blood pressure 130-139 mm Hg (DM) (HTN, CKD, CAD)20$0

2020

Largest Medicaid services in 2020
Clinic visit/encounter, all-inclusive32$11,699

Drugs they prescribed that Part D paid

$129,764

Pharmacies billed $129,764 in 2024.

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

Opioids were 1% of their Part D prescriptions (13 of 929) in 2024. At or below the middle of the specialty; the typical family practice clinician is at 2%.

776 generic and fewer than 11 brand-name prescriptions · $129,764 in drug cost · 15 antibiotic prescriptions to 12 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.

Largest Part D drug costs
Ozempic23$28,627$1,245
Jardiance14$23,034$1,645
Mounjaro12$13,951$1,163
Atorvastatin71$559$8
Gabapentin24$498$21
See all 24 drugs
Every Part D drug this clinician prescribed
Ozempic23$28,627$1,245
Jardiance14$23,034$1,645
Mounjaro12$13,951$1,163
Atorvastatin71$559$8
Gabapentin24$498$21
Albuterol Sulfate Hfa12$396$33
Amlodipine Besylate68$379$6
Metformin51$341$7
Losartan55$296$5
Metoprolol24$263$11
Lisinopril28$253$9
Escitalopram16$238$15
Alendronate13$233$18
Omeprazole18$231$13
Fluticasone Propionate17$225$13
Pantoprazole20$217$11
Famotidine14$204$15
Atenolol20$167$8
Levothyroxine16$142$9
Clopidogrel12$118$10
Sertraline16$72$4
Simvastatin11$66$6
Triamcinolone Acetonide11$43$4
Hydrochlorothiazide20$28$1

Year by year

Part D prescribing by year
20249291261% (13)None$129,764
20231,005115NoneNone$132,042
2022882137NoneNone$107,708
2021481833% (12)None$46,782
2020348530% (0)None$24,746
2019273410% (0)None$18,714

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

See the drugs prescribed each year

2023: 23 drugs

Part D drugs prescribed in 2023
Jardiance15$25,394$1,693
Ozempic22$22,082$1,004
Eliquis11$7,728$703
Atorvastatin75$1,678$22
Amlodipine Besylate80$1,376$17
Tamsulosin20$928$46
Metoprolol27$918$34
Levothyroxine49$813$17
Metformin63$740$12
Losartan51$722$14
Rosuvastatin13$664$51
Gabapentin25$644$26
Lisinopril34$396$12
Pantoprazole16$367$23
Atenolol25$360$14
Alendronate14$339$24
Fluticasone Propionate22$319$15
Famotidine16$271$17
Oxybutynin Chloride14$253$18
Omeprazole11$218$20
Simvastatin15$159$11
Sertraline12$113$9
Hydrochlorothiazide23$101$4

2022: 20 drugs

Part D drugs prescribed in 2022
Ozempic14$13,096$935
Atorvastatin68$1,313$19
Albuterol Sulfate Hfa16$699$44
Losartan41$654$16
Metformin55$653$12
Metoprolol21$651$31
Gabapentin21$651$31
Levothyroxine29$578$20
Amlodipine Besylate51$576$11
Tamsulosin20$515$26
Lisinopril33$476$14
Famotidine16$256$16
Pantoprazole11$243$22
Hydrochlorothiazide28$215$8
Atenolol20$159$8
Simvastatin13$137$11
Fluticasone Propionate13$121$9
Triamcinolone Acetonide11$106$10
Alendronate11$104$9
Metoprolol12$76$6

2021: 11 drugs

Part D drugs prescribed in 2021
Atorvastatin33$623$19
Gabapentin19$591$31
Amlodipine Besylate37$546$15
Losartan25$511$20
Tamsulosin11$290$26
Hydrocodone-Acetaminophen11$251$23
Metformin23$248$11
Lisinopril16$209$13
Glipizide12$135$11
Atenolol11$108$10
Hydrochlorothiazide17$75$4

2020: 7 drugs

Part D drugs prescribed in 2020
Eliquis12$5,492$458
Atorvastatin19$196$10
Fluticasone Propionate15$131$9
Losartan13$128$10
Atenolol15$110$7
Tamsulosin14$102$7
Metformin13$95$7

2019: 5 drugs

Part D drugs prescribed in 2019
Tamsulosin15$123$8
Fluticasone Propionate12$114$10
Atorvastatin16$103$6
Atenolol12$87$7
Ranitidine14$58$4

Money from drug and device companies

$20 in 2025

Industry payments by year
202511None$20
202411None$122

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

A payment is not proof that care is biased.

Payments by company
DexcomDexcom G6 Transmitter$20
1 payment
  • Meals for Dexcom G6 Transmitter · 2025-10-08 · $20
See the published payment
Every published payment
DexcomMeals · 2025-10-08Dexcom G6 Transmitter$20
See earlier years (2024)

2024: $122

Payments by company in 2024
Regeneron Healthcare SolutionsDupixent$122
1 payment
  • Meals for Dupixent · 2024-10-17 · $122

Professional record

NPI
1477081966
Licence
CA A157942California A157942: Current · expires 2028-08-31
Trained
Stanford University School of Medicine, 2017
Group
Stanford Health Care · Roots Community Health Center
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Family medicine (207Q00000X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2017-05-26
NPI last updated
2024-04-17
NPI record certified
2024-04-17

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