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Yaping Joyce Liao, MD

Ophthalmology · Stanford

NPI 1497711832

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
13
2 carriers
Offices
2

Offices

2 locations · 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

13 plans · 2 carriers

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

13 of 13 plans

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

California Medical Board record

Licence A69593 · Current

Licensed to practise in California · since 1999 · expires 2027-04-30 · University of California San Francisco 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

$46,421

Medicare paid this office $46,421 for 324 people.

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

Largest Original Medicare bills
Return visit (30+ min)191$18,064$82
New patient visit (45+ min)83$8,607$104
Imaging of optic nerve286$6,044$19
Long return visit (40+ min)25$3,606$124
Exam of visual field with extended testing138$3,491$23
See all 8 services
Every Original Medicare service billed
Return visit (30+ min)191$18,064$82
New patient visit (45+ min)83$8,607$104
Imaging of optic nerve286$6,044$19
Long return visit (40+ min)25$3,606$124
Exam of visual field with extended testing138$3,491$23
New patient visit (60+ min)12$1,755$146
Short return visit (20+ min)13$820$63
Imaging of retina12$255$20

Who their Medicare patients are

324 Original Medicare patients in 2024. Average age 72 · Under 65 13% · 85 and older 9% · Women 60% · Also on Medicaid 18% · Health risk score 1.33. Above the middle of the specialty; the typical ophthalmology clinician is at 1.16.

Conditions among them: High blood pressure 62% · Diabetes 24% · Depression 23% · Coronary heart disease 20% · Chronic kidney disease 17% · Stroke 17% · Atrial fibrillation 14% · Cancer 13% · Heart failure 12% · COPD 10% · Dementia 9%.

The office billed $165,480, Medicare allowed $64,590 and paid $46,421; for 892 services of 17 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
2024324892721.33$165,480$46,421
2023340979721.28$160,198$56,424
2022314856721.30$127,475$48,710
2021341956711.23$149,007$58,664
2020262692711.36$112,443$39,657
2019252639711.45$93,249$33,803
2018293702701.50$106,167$40,140
2017288736701.41$165,904$41,644
2016327819701.50$199,884$47,665
2015308830681.46$190,929$45,946
2014320871701.28$188,174$45,724
2013256798691.39$170,836$40,985

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

Original Medicare services billed in 2023
Return visit (30+ min)194$20,517$87
New patient visit (45+ min)107$12,156$114
Imaging of optic nerve250$5,728$20
Long return visit (40+ min)29$4,907$133
Exam of visual field with extended testing137$3,883$24
New patient visit (60+ min)22$3,496$159
Imaging of retina70$1,775$23
Short return visit (20+ min)11$618$56

2022: 7 services

Original Medicare services billed in 2022
Return visit (30+ min)175$18,149$82
New patient visit (45+ min)97$10,758$111
Imaging of optic nerve244$5,303$19
Long return visit (40+ min)30$4,199$120
Exam of visual field with extended testing128$3,452$24
New patient visit (60+ min)14$2,359$168
Imaging of retina22$481$21

2021: 7 services

Original Medicare services billed in 2021
New patient visit (45+ min)125$15,238$122
Return visit (30+ min)140$14,834$84
Long return visit (40+ min)69$9,149$116
Imaging of optic nerve249$5,353$19
Exam of visual field with extended testing148$4,044$24
New patient visit (60+ min)26$3,996$154
Imaging of retina49$1,253$25

2020: 8 services

Original Medicare services billed in 2020
Long return visit (40+ min)97$11,836$100
Return visit (30+ min)96$6,905$63
New patient visit (45+ min)52$5,539$107
Imaging of optic nerve178$3,620$18
New patient visit (60+ min)24$3,531$147
Exam of visual field with extended testing91$2,493$24
Telephone medical discussion with physician, 21-30 minutes12$1,140$76
Imaging of retina14$324$23

2019: 6 services

Original Medicare services billed in 2019
Return visit (30+ min)119$9,925$65
Long return visit (40+ min)76$7,405$93
New patient visit (45+ min)58$5,866$101
Imaging of optic nerve161$3,146$17
Exam of visual field with extended testing99$2,573$23
Imaging of retina16$319$20

2018: 7 services

Original Medicare services billed in 2018
Long return visit (40+ min)105$11,994$96
Return visit (30+ min)118$8,577$61
New patient visit (45+ min)53$5,755$109
New patient visit (60+ min)31$4,666$151
Exam of visual field with extended testing140$3,496$23
Imaging of optic nerve155$3,146$19
Imaging of retina14$319$21

2017: 8 services

Original Medicare services billed in 2017
Return visit (30+ min)131$10,760$65
Long return visit (40+ min)90$10,107$92
New patient visit (60+ min)41$5,689$139
New patient visit (45+ min)49$5,313$108
Exam of visual field with extended testing124$3,630$24
Imaging of optic nerve137$3,075$19
Imaging of retina20$483$23
Photography of the retina12$203$16

2016: 7 services

Original Medicare services billed in 2016
Long return visit (40+ min)133$14,543$93
Return visit (30+ min)138$10,678$66
New patient visit (45+ min)47$5,247$112
Imaging of optic nerve178$4,850$25
New patient visit (60+ min)36$4,718$131
Exam of visual field with extended testing142$4,040$24
Imaging of retina12$321$27

2015: 7 services

Original Medicare services billed in 2015
Return visit (30+ min)174$15,424$66
Long return visit (40+ min)75$8,507$93
Imaging of optic nerve196$5,653$25
New patient visit (45+ min)45$4,602$102
New patient visit (60+ min)31$4,506$145
Exam of visual field with extended testing126$3,526$25
Exam of visual field with extended testing12$312$26

2014: 7 services

Original Medicare services billed in 2014
Return visit (30+ min)193$16,736$66
New patient visit (45+ min)70$7,589$108
Long return visit (40+ min)66$7,069$93
Imaging of optic nerve190$5,615$26
Exam of visual field with extended testing157$4,807$25
New patient visit (60+ min)13$1,829$141
Imaging of retina11$300$27

2013: 7 services

Original Medicare services billed in 2013
Return visit (30+ min)166$15,444$64
New patient visit (45+ min)62$6,748$109
Imaging of optic nerve156$5,223$25
Exam of visual field with extended testing135$4,709$25
Long return visit (40+ min)37$4,339$94
New patient visit (60+ min)18$2,617$145
Imaging of retina12$317$26

Medicaid work

$1,418 in 2024

Medicaid paid $1,418 for 57 billed services this clinician did in 2024, up to 18 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
Computerized ophthalmic diagnostic imaging (eg, optical coherence tomography [OCT]), posterior segment, with interpretation and report, unilateral or bilateral; optic nerve44$791
Return visit (30+ min)13$627
Medicaid work by year
202457218$1,418
2023111215$2,068
202296320$2,334
202144216$737
See the largest Medicaid services in earlier years

2023

Largest Medicaid services in 2023
Computerized ophthalmic diagnostic imaging (eg, optical coherence tomography [OCT]), posterior segment, with interpretation and report, unilateral or bilateral; optic nerve70$1,152
Return visit (30+ min)41$917

2022

Largest Medicaid services in 2022
Return visit (30+ min)26$1,030
Computerized ophthalmic diagnostic imaging (eg, optical coherence tomography [OCT]), posterior segment, with interpretation and report, unilateral or bilateral; optic nerve57$996
Visual field examination, unilateral or bilateral, with interpretation and report; extended examination (eg, Goldmann visual fields with at least 3 isopters plotted and static determination within the central 30°, or quantitative, automated threshold perimetry, Octopus program G-1, 32 or 42, Humphrey visual field analyzer full threshold programs 30-2, 24-2, or 30/60-2)13$308

2021

Largest Medicaid services in 2021
Computerized ophthalmic diagnostic imaging (eg, optical coherence tomography [OCT]), posterior segment, with interpretation and report, unilateral or bilateral; optic nerve28$433
Visual field examination, unilateral or bilateral, with interpretation and report; extended examination (eg, Goldmann visual fields with at least 3 isopters plotted and static determination within the central 30°, or quantitative, automated threshold perimetry, Octopus program G-1, 32 or 42, Humphrey visual field analyzer full threshold programs 30-2, 24-2, or 30/60-2)16$303

Drugs they prescribed that Part D paid

$4,505

Pharmacies billed $4,505 in 2024.

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

71 generic and 19 brand-name prescriptions · $4,505 in drug cost.

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
Pyridostigmine13$772$59
Gabapentin17$208$12

Year by year

Part D prescribing by year
20249025None21%$4,505
2023110310% (0)31%$9,478
202299270% (0)31%$11,375
2021132350% (0)20%$18,802
2020101250% (0)None$20,395
201996240% (0)None$17,741
2018119210% (0)None$14,711
2017115250% (0)None$10,941
2016105250% (0)None$10,124
2015111260% (0)13%$14,302
2014102160% (0)41%$25,505
201377130% (0)36%$12,735

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

See the drugs prescribed each year

2023: 3 drugs

Part D drugs prescribed in 2023
Pyridostigmine17$1,467$86
Gabapentin19$744$39
Prednisone14$463$33

2022: 3 drugs

Part D drugs prescribed in 2022
Rhopressa22$6,813$310
Pyridostigmine27$2,379$88
Prednisone14$317$23

2021: 5 drugs

Part D drugs prescribed in 2021
Rhopressa25$7,440$298
Pyridostigmine36$2,715$75
Mycophenolate Mofetil15$1,162$77
Gabapentin14$358$26
Prednisone19$298$16

2020: 3 drugs

Part D drugs prescribed in 2020
Pyridostigmine23$1,482$64
Mycophenolate Mofetil12$1,070$89
Prednisone27$491$18

2019: 3 drugs

Part D drugs prescribed in 2019
Pyridostigmine25$2,680$107
Prednisone28$611$22
Gabapentin11$261$24

2018: 2 drugs

Part D drugs prescribed in 2018
Pyridostigmine46$3,342$73
Prednisone43$837$19

2017: 4 drugs

Part D drugs prescribed in 2017
Pyridostigmine40$2,974$74
Mycophenolate Mofetil14$873$62
Prednisone26$486$19
Gabapentin11$84$8

2016: 3 drugs

Part D drugs prescribed in 2016
Pyridostigmine34$2,107$62
Mycophenolate Mofetil22$1,030$47
Prednisone19$219$12

2015: 3 drugs

Part D drugs prescribed in 2015
Pyridostigmine33$1,989$60
Mycophenolate Mofetil21$814$39
Prednisone22$244$11

2014: 3 drugs

Part D drugs prescribed in 2014
Mestinon30$19,278$643
Mycophenolate Mofetil24$1,712$71
Prednisone23$378$16

2013: 3 drugs

Part D drugs prescribed in 2013
Mestinon25$7,408$296
Mycophenolate Mofetil12$1,792$149
Prednisone19$160$8

Money from drug and device companies

$45 in 2024

Industry payments by year
202411None$45
202311None$65
202222None$94
202011$1,000$1,000

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
AbbvieNone$45
1 payment
  • Meals · 2024-02-26 · $45
See the published payment
Every published payment
AbbvieMeals · 2024-02-26None$45
See earlier years (2023, 2022, 2020)

2023: $65

Payments by company in 2023
Horizon Therapeutics plcTepezza$65
1 payment
  • Meals for Tepezza · 2023-03-13 · $65

2022: $94

Payments by company in 2022
BiogenNone$72
1 payment
  • Meals · 2022-06-28 · $72
Bausch & Lomb AmericasProlensa$23
1 payment
  • Meals for Prolensa · 2022-06-22 · $23

2020: $1,000

Payments by company in 2020
BiogenNone$1,000
1 payment
  • Consulting · 2020-10-28 · $1,000

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
1497711832
Licence
CA A69593California A69593: Current · expires 2027-04-30
Trained
University of California, San Francisco School of Medicine, 1998
Video visits
Lists video visits
Gender
Female
More record details
Sole proprietor
No
Taxonomy
Federal specialty code 207WX0109X (207WX0109X); Federal specialty code 207W00000X (207W00000X); Neurology (2084N0400X)
Mailing address
1804 Embarcadero Rd, Ste 100, Palo Alto, CA, 94303
NPI first listed
2006-04-25
NPI last updated
2024-04-04
NPI record certified
2024-04-04

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