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Blake Snyder, MD

Ophthalmology · Stanford

NPI 1699302927

Medicare standing
Clear
Enrolled, allowed to bill and order, not excluded
Plans that list them
15
2 carriers
Office
1

Offices

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

Looking this up.

Hospitals listed: Stanford Health Care · Zuckerberg San Francisco General Hosp & Trauma Ctr. That is not proof they admit you there this week.

Plans that list them

15 plans · 2 carriers

A missing listing does not mean out of network. Directories change, and a listing does not cover every office. Call Dr. Snyder’s office at (650) 723-4000 to confirm they take your plan. Ask about the office you use, its medical group, referrals and appointments.

15 of 15 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
Imperial Courage Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Dynamic Plan (HMO)Imperial Health Plan of California, Inc.ListedSep 1, 2026
Imperial Senior Value (HMO C-SNP)Imperial Health Plan of California, Inc.ListedSep 1, 2026

Hospitals they work in

2 hospitals

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
  • Zuckerberg San Francisco General Hosp & Trauma CtrSan Francisco, CAAcute Care Hospital · Government - Local · Has an emergency department · Birthing-friendlyPart of San Francisco Health Network, which runs 2 hospitalsPatients rate it 3 of 5 · 72% would definitely recommend it
    Overall rating: 2 of 5 starsBetter than the national rate — Catheter Associated Urinary Tract Infections (ICU + select Wards): 0.449, Oct 2024 – Sep 2025Better than the national rate — Central Line Associated Bloodstream Infection (ICU + select Wards): 0.37, Oct 2024 – Sep 2025Better than the national rate — Clostridium Difficile (C.Diff): 0.538, Oct 2024 – Sep 2025
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%
See every measure and the patient survey for Zuckerberg San Francisco General Hosp & Trauma Ctr

Behind the star rating — Deaths: 1 better, 6 the same, 0 worse of 7 measures. Safety: 1 better, 5 the same, 1 worse of 7 measures. Readmissions: 0 better, 7 the same, 2 worse of 9 measures. The star rating is worked out from an earlier period than the measures below, so the two can disagree.

Every scored measure at Zuckerberg San Francisco General Hosp & Trauma Ctr
Catheter Associated Urinary Tract Infections (ICU + select Wards)Infections0.449BetterOct 2024 – Sep 2025
Central Line Associated Bloodstream Infection (ICU + select Wards)Infections0.37BetterOct 2024 – Sep 2025
Clostridium Difficile (C.Diff)Infections0.538BetterOct 2024 – Sep 2025
Abdominopelvic accidental puncture or laceration rateComplications and deaths0.9 (0 to 1.91) · 667 casesNo differentJul 2022 – Jun 2024
CMS Medicare PSI 90: Patient safety and adverse events compositeComplications and deaths1.12 (0.76 to 1.49)No differentJul 2022 – Jun 2024
Death rate among surgical inpatients with serious treatable complicationsComplications and deaths195.34 (147.34 to 243.34) · 76 casesNo differentJul 2022 – Jun 2024
Death rate for COPD patientsComplications and deaths7.2 · 114 casesNoneJul 2022 – Jun 2025
Death rate for heart attack patientsComplications and deaths12.2 · 48 casesNoneJul 2022 – Jun 2025
Death rate for heart failure patientsComplications and deaths7.5 · 201 casesNoneJul 2022 – Jun 2025
Death rate for pneumonia patientsComplications and deaths14.5 · 214 casesNoneJul 2022 – Jun 2025
Death rate for stroke patientsComplications and deaths10.3 · 261 casesNoneJul 2023 – Jun 2025
Hybrid Hospital-Wide All-Cause Risk Standardized Mortality RateComplications and deaths3.5 · 1,351 casesNoneJul 2024 – Jun 2025
Iatrogenic pneumothorax rateComplications and deaths0.29 (0.07 to 0.5) · 4,709 casesNo differentJul 2022 – Jun 2024
In-hospital fall-associated fracture rateComplications and deaths0.39 (0.19 to 0.59) · 4,644 casesNo differentJul 2022 – Jun 2024
Perioperative pulmonary embolism or deep vein thrombosis rateComplications and deaths4.34 (2.11 to 6.56) · 795 casesNo differentJul 2022 – Jun 2024
Postoperative acute kidney injury requiring dialysis rateComplications and deaths1.59 (0 to 3.28) · 234 casesNo differentJul 2022 – Jun 2024
Postoperative hemorrhage or hematoma rateComplications and deaths2.85 (1.33 to 4.38) · 861 casesNo differentJul 2022 – Jun 2024
Postoperative respiratory failure rateComplications and deaths8.95 (0.25 to 17.64) · 261 casesNo differentJul 2022 – Jun 2024
Postoperative sepsis rateComplications and deaths6 (2.01 to 9.98) · 242 casesNo differentJul 2022 – Jun 2024
Postoperative wound dehiscence rateComplications and deaths1.66 (0.17 to 3.14) · 167 casesNo differentJul 2022 – Jun 2024
Pressure ulcer rateComplications and deaths0.79 (0.08 to 1.49) · 4,129 casesNo differentJul 2022 – Jun 2024
Rate of complications for hip/knee replacement patientsComplications and deaths4.4 · 35 casesNoneApr 2023 – Mar 2025
MRSA BacteremiaInfections0.709No differentOct 2024 – Sep 2025
SSI - Colon SurgeryInfections1.769No differentOct 2024 – Sep 2025
Acute Myocardial Infarction (AMI) 30-Day Readmission RateUnplanned return visits14.7 · 41 casesNoneJul 2023 – Jun 2025
Heart failure (HF) 30-Day Readmission RateUnplanned return visits22.1 · 227 casesNoneJul 2023 – Jun 2025
Hospital return days for heart failure patientsUnplanned return visits28.6 · 257 casesNoneJul 2022 – Jun 2025
Hospital return days for pneumonia patientsUnplanned return visits75.1 · 239 casesNoneJul 2022 – Jun 2025
Pneumonia (PN) 30-Day Readmission RateUnplanned return visits18.2 · 232 casesNoneJul 2023 – Jun 2025
Rate of emergency department (ED) visits for patients receiving outpatient chemotherapyUnplanned return visits6.8 (4.7 to 9.6) · 175 casesNo differentJan 2024 – Dec 2024
Rate of inpatient admissions for patients receiving outpatient chemotherapyUnplanned return visits11.3 (8.3 to 15.1) · 175 casesNo differentJan 2024 – Dec 2024
Rate of readmission after hip/knee replacementUnplanned return visits6.1 · 37 casesNoneJul 2023 – Jun 2025
Rate of readmission for chronic obstructive pulmonary disease (COPD) patientsUnplanned return visits20.2 · 132 casesNoneJul 2023 – Jun 2025
Rate of unplanned hospital visits after colonoscopy (per 1,000 colonoscopies)Unplanned return visits13.6 (10.4 to 17.9) · 966 casesNo differentJan 2022 – Dec 2024
Ratio of unplanned hospital visits after hospital outpatient surgeryUnplanned return visits1.2 (0.8 to 1.7) · 88 casesNo differentJan 2024 – Dec 2024

What patients said (1,644 patients answered, 16% of those asked)

Patient survey stars by topic at Zuckerberg San Francisco General Hosp & Trauma Ctr
Cleanliness4
Nurse communication2
Doctor communication3
Communication about medicines2
Discharge information3
Overall hospital rating4
Quietness3
Recommend hospital4
Share of patients giving the best answer at Zuckerberg San Francisco General Hosp & Trauma Ctr
Room was "always" clean69%
Nurses "always" communicated well73%
Doctors "always" communicated well75%
Staff "always" explained56%
Yes, staff "did" give patients this information84%
Yes, staff "did" give patients information about help after discharge83%
Doctors "always" explained things so they could understand68%
Doctors "always" listened carefully75%
Doctors "always" treated them with courtesy and respect82%
Patients who gave a rating of "9" or "10" (high)72%
Staff "always" explained new medications67%
Nurses "always" explained things so they could understand68%
Nurses "always" listened carefully70%
Nurses "always" treated them with courtesy and respect80%
"Always" quiet at night55%
"YES", patients would definitely recommend the hospital72%
Staff "always" explained possible side effects44%
Yes, staff "did" give patients information about possible symptoms84%

Original Medicare doctor bills

$10,644

Medicare paid this office $10,644 for 69 people.

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

Largest Original Medicare bills
Return visit (30+ min)37$5,020$122
Imaging of retina26$1,158$40
Imaging of retina14$458$22

Procedures Medicare counted

Procedure volume Medicare published
Cataract surgery1-10None

Who their Medicare patients are

69 Original Medicare patients in 2024. Average age 71 · Women 70% · Also on Medicaid 42% · Health risk score 1.05. At or below the middle of the specialty; the typical ophthalmology clinician is at 1.16.

Conditions among them: High blood pressure 58% · Diabetes 19%.

The office billed $53,185, Medicare allowed $13,407 and paid $10,644; for 123 services of 16 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.

Medicaid work

$2,140 in 2024

Medicaid paid $2,140 for 45 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
Service29$1,930
Return visit (30+ min)16$210
Medicaid work by year
202445215$2,140

Drugs they prescribed that Part D paid

$110,984

Pharmacies billed $110,984 in 2024.

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

Opioids were 0% of their Part D prescriptions (0 of 577) in 2024. At or below the middle of the specialty; the typical ophthalmology clinician is at 0%.

372 generic and 205 brand-name prescriptions · $110,984 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
Prednisolone Acetate89$4,193$47
Latanoprost106$2,875$27
Brimonidine21$1,344$64
Ketorolac Tromethamine84$1,299$15
Difluprednate18$1,295$72
See all 9 drugs
Every Part D drug this clinician prescribed
Prednisolone Acetate89$4,193$47
Latanoprost106$2,875$27
Brimonidine21$1,344$64
Ketorolac Tromethamine84$1,299$15
Difluprednate18$1,295$72
Dorzolamide-Timolol62$1,044$17
Ofloxacin54$657$12
Dorzolamide22$314$14
Timolol Maleate11$203$18

Year by year

Part D prescribing by year
20245772410% (0)36%$110,984
20239473610% (0)37%$114,537
202218892None45%$16,627
202122130% (0)None$653
202012None0% (0)0%$101

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

See the drugs prescribed each year

2023: 14 drugs

Part D drugs prescribed in 2023
Rhopressa35$19,522$558
Rocklatan24$13,049$544
Lumigan15$11,303$754
Latanoprost310$10,210$33
Dorzolamide-Timolol147$6,240$42
Travoprost28$5,321$190
Prednisolone Acetate52$2,967$57
Dorzolamide54$2,554$47
Brimonidine60$2,085$35
Fluorometholone17$1,131$67
Timolol Maleate40$901$23
Pilocarpine17$836$49
Ketorolac Tromethamine14$544$39
Ofloxacin16$289$18

2022: 7 drugs

Part D drugs prescribed in 2022
Prednisolone Acetate42$2,257$54
Fluorometholone15$1,119$75
Brimonidine12$1,055$88
Moxifloxacin11$451$41
Erythromycin25$293$12
Latanoprost11$250$23
Polymyxin B Sul-Trimethoprim12$96$8

Money from drug and device companies

$67 in 2025

Industry payments by year
202512None$67
202315None$373
202215None$206
202122None$213
202011None$16

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
Alcon VisionUnity$67
2 payments
  • Meals for Unity · 2025-09-26 · $47
  • Meals for Unity · 2025-09-26 · $20
See all 2 published payments
Every published payment
Alcon VisionMeals · 2025-09-26Unity$47
Alcon VisionMeals · 2025-09-26Unity$20
See earlier years (2023, 2022, 2021, 2020)

2023: $373

Payments by company in 2023
Alcon VisionCenturion$373
5 payments
  • Meals for Centurion · 2023-08-17 · $75
  • Meals for Centurion · 2023-08-17 · $84
  • Meals for Argos · 2023-04-20 · $85
  • Meals for Clareon · 2023-03-30 · $121
  • Meals for Clareon · 2023-02-08 · $9

2022: $206

Payments by company in 2022
Alcon VisionHydrus Microstent$206
5 payments
  • Meals for Centurion · 2022-09-10 · $15
  • Meals for Centurion · 2022-09-10 · $15
  • Meals for Centurion · 2022-09-10 · $17
  • Meals for Centurion · 2022-09-10 · $17
  • Meals for Hydrus Microstent · 2022-09-08 · $141

2021: $213

Payments by company in 2021
Alcon VisionAcrysof Iq Panoptix$113
1 payment
  • Meals for Acrysof Iq Panoptix · 2021-09-15 · $113
AllerganNone$100
1 payment
  • Education · 2021-10-13 · $100

2020: $16

Payments by company in 2020
Novo NordiskSaxenda$16
1 payment
  • Meals for Saxenda · 2020-07-02 · $16

Professional record

NPI
1699302927
Gender
Male
More record details
Sole proprietor
Yes
Taxonomy
Federal specialty code 207W00000X (207W00000X); Federal specialty code 207WX0108X (207WX0108X)
Mailing address
300 Pasteur Dr, Stanford, CA, 94305
NPI first listed
2020-03-25
NPI last updated
2025-07-23
NPI record certified
2025-07-23

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

Extra NPI addresses: 10101 Ridgegate Pkwy, Lone Tree, CO, 80124 · 1001 Potrero Avenue Bldg 5 Wd 4m, San Francisco, CA, 94110 · 490 Illinois St Fl 5, San Francisco, CA, 94143