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Hospitals in California with the best net Medicare quality adjustments

271 California hospitals ranked by net Medicare quality adjustment in the 2026 Medicare (CMS) data. Leading: Kaiser Foundation Hospital - South San Francisco, L A Downtown Medical Center, Kaiser Foundation Hospital - Fremont. Filter by type, ownership and size, choose the measures you care about, and sort by any column.

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271 hospitals ranked in California by net medicare quality adjustment; 106 more match but have no reported value.

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#HospitalNet Medicare quality adjustmenthigher is betterOverall star ratinghigher is betterPatient survey star ratinghigher is betterHeart attack death ratelower is betterHeart failure death ratelower is betterHospital-wide readmission ratelower is better · 2025 dataSerious complicationslower is betterTime in emergency departmentlower is betterMedicare spending per patientlower is betterTotal beds
National average−0.48%3.311.9%11.1%15.0%1.00162 min1.00
1Kaiser Foundation Hospital - South San FranciscoSouth San Francisco, CA · Acute care+2.72%44——14.9%0.97—0.85120Compare
2L A Downtown Medical CenterLos Angeles, CA · Acute care+2.10%3———19.1%0.84—1.29187Compare
3Kaiser Foundation Hospital - FremontFremont, CA · Acute care+2.02%43——14.4%0.97—0.86193Compare
4Kaiser Foundation Hospital - Orange County - AnaheimAnaheim, CA · Acute care+1.91%44——15.2%0.88—0.84262Compare
5Kaiser Foundation Hospital - Redwood CityRedwood City, CA · Acute care+1.73%44——14.8%0.91—0.91153Compare
6St Elizabeth Community HospitalRed Bluff, CA · Acute care+1.72%44—13.3%15.1%0.90133 min0.9576Compare
7Kaiser Foundation Hospital - RosevilleRoseville, CA · Acute care+1.63%43——14.7%1.10—0.84340Compare
8Kaiser Foundation Hospital - San DiegoSan Diego, CA · Acute care+1.37%44—13.3%13.7%1.01—0.87659Compare
9Sutter Amador HospitalJackson, CA · Acute care+1.34%44—9.6%14.0%1.05136 min0.9652Compare
10Scripps Green HospitalLa Jolla, CA · Acute care+1.32%55—8.8%13.9%0.97—0.92173Compare
11Kaiser Foundation Hospital - VacavilleVacaville, CA · Acute care+1.30%44——15.0%0.92—0.8672Compare
12Sutter Auburn Faith HospitalAuburn, CA · Acute care+1.28%54—12.7%13.3%1.04134 min0.9297Compare
13Sutter Davis HospitalDavis, CA · Acute care+1.21%44—10.6%13.9%0.88144 min0.9057Compare
14Barton Memorial HospitalSouth Lake Tahoe, CA · Acute care+1.20%34—11.7%15.0%0.88132 min0.8764Compare
15Adventist Health DelanoDelano, CA · Acute care+1.20%23—9.8%15.0%1.02150 min0.96156Compare
16Kaiser Foundation Hospital - Los AngelesLos Angeles, CA · Acute care+1.19%53—10.3%15.2%0.98—0.90507Compare
17Martin Luther King, Jr. Community HospitalLos Angeles, CA · Acute care+1.16%43—9.9%14.9%0.92150 min0.95131Compare
18Sutter Roseville Medical CenterRoseville, CA · Acute care+1.12%5410.7%9.4%14.6%0.90226 min0.95328Compare
19Kaiser Foundation Hospital Fontana/OntarioFontana, CA · Acute care+1.06%34——15.5%0.98—0.93438Compare
20Peninsula Medical CenterBurlingame, CA · Acute care+1.02%5410.0%9.0%14.1%0.81176 min0.97301Compare
21Woodland Memorial HospitalWoodland, CA · Acute care+0.98%54—14.0%14.8%1.03110 min0.89122Compare
22Sequoia HospitalRedwood City, CA · Acute care+0.94%5412.5%9.1%14.7%0.91132 min0.94208Compare
23Goleta Valley Cottage HospitalSanta Barbara, CA · Acute care+0.91%54—10.4%14.4%1.08149 min1.01122Compare
24Scripps Memorial Hospital - EncinitasEncinitas, CA · Acute care+0.89%4410.5%7.6%14.5%0.98200 min0.94158Compare
25Kaiser Foundation Hospital - DowneyDowney, CA · Acute care+0.89%43——15.2%1.00—0.88352Compare
26Providence Little Co Of Mary Medical Center San PedroSan Pedro, CA · Acute care+0.88%43—9.2%15.3%0.89169 min0.98387Compare
27Scripps Memorial Hospital La JollaLa Jolla, CA · Acute care+0.88%548.9%7.7%13.8%1.38186 min0.97332Compare
28Kaiser Foundation HospitalSan Rafael, CA · Acute care+0.87%43——14.6%0.96—0.90120Compare
29UCSan Diego Health Hillcrest - Hillcrest Medical CenterSan Diego, CA · Acute care+0.84%539.1%7.8%14.3%1.02259 min0.99600Compare
30Chino Valley Medical CenterChino, CA · Acute care+0.84%42—9.1%16.1%0.88174 min1.03112Compare
31Sutter Santa Rosa Regional HospitalSanta Rosa, CA · Acute care+0.83%5311.8%10.5%14.4%1.03212 min0.96170Compare
32Southern California Hospital At HollywoodHollywood, CA · Acute care+0.81%319.2%7.9%14.5%0.86237 min1.35579Compare
33Marshall Medical CenterPlacerville, CA · Acute care+0.79%4311.7%11.3%13.7%0.86176 min0.95111Compare
34Keck Hospital Of USCLos Angeles, CA · Acute care+0.78%54—7.7%15.8%0.79—0.97285Compare
35Sharp Coronado Hospital And Healthcare CenterCoronado, CA · Acute care+0.78%44—13.6%14.2%1.22126 min0.85204Compare
36Kaiser Foundation Hospital-Santa RosaSanta Rosa, CA · Acute care+0.77%33——15.1%0.95—0.88173Compare
37California Pacific Medical Center - Mission BernalSan Francisco, CA · Acute care+0.76%43—9.6%15.7%0.87204 min0.93120Compare
38College Medical CenterLong Beach, CA · Acute care+0.73%3———15.2%0.92322 min1.36157Compare
39Kaiser Foundation Hospital - San MarcosSan Marcos, CA · Acute care+0.71%44——15.2%0.99—0.89168Compare
40Kaiser Foundation Hospital - FresnoFresno, CA · Acute care+0.68%43——14.6%0.93—0.84169Compare
41Adventist Health Ukiah ValleyUkiah, CA · Acute care+0.66%43—9.9%14.4%0.92148 min0.95127Compare
42UCSF Medical CenterSan Francisco, CA · Acute care+0.65%4410.1%6.6%14.0%1.05276 min0.961,019Compare
43Hi-Desert Medical CenterJoshua Tree, CA · Acute care+0.65%22—11.1%15.2%0.97154 min0.9259Compare
44Novato Community HospitalNovato, CA · Acute care+0.60%54—10.0%14.4%0.85156 min0.9375Compare
45French Hospital Medical CenterSan Luis Obispo, CA · Acute care+0.59%5311.3%13.7%13.3%0.71164 min0.93135Compare
46Cedars-Sinai Medical CenterLos Angeles, CA · Acute care+0.58%538.3%5.5%14.3%1.06355 min1.04877Compare
47Kaiser Foundation Hospital - Walnut CreekWalnut Creek, CA · Acute care+0.56%33——15.2%1.14—0.88362Compare
48Encino Hospital Medical CenterEncino, CA · Acute care+0.54%31—10.8%15.6%0.94134 min1.26150Compare
49Alta Bates Summit Medical CenterOakland, CA · Acute care+0.53%539.8%8.9%13.4%0.88235 min1.01569Compare
50Kaiser Foundation Hospital And Rehab CenterVallejo, CA · Acute care+0.52%2412.6%—14.6%0.97—0.87475Compare

About these rankings

Rankings use the 2026 release of CMS Care Compare data. Hospitals share a rank (“T”) when their values are equal, and only hospitals with a reported value for the sorted measure are ranked. Shading compares each value with every hospital in the country, so it doesn’t change with your filters. Small differences are often not statistically meaningful; use the methodology and glossary for context.

Net Medicare quality adjustment
Approximate combined change to the hospital's Medicare inpatient payments from the three pay-for-performance programs, added together: the readmissions penalty, the value-based purchasing bonus or penalty, and the 1% cut for hospital-acquired conditions. Inpatient prospective payment system hospitals only; Maryland hospitals are exempt..
Overall star rating
CMS overall hospital quality star rating (1-5).
Patient survey star rating
HCAHPS summary star rating (1-5).
Heart attack death rate
30-day death rate for heart attack patients.
Heart failure death rate
30-day death rate for heart failure patients.
Hospital-wide readmission rate
Rate of unplanned readmission within 30 days, all conditions. From 2025 CMS reports the Hybrid Hospital-Wide Readmission measure (claims plus EHR data), which replaced the claims-only measure; values are close but not strictly comparable across the change. CMS suppressed it for 2026.. Latest available: 2025 release.
Serious complications
Patient safety and adverse events composite (PSI 90; 1.0 = national value).
Time in emergency department
Median time patients spent in the emergency department before leaving.
Medicare spending per patient
Medicare spending per beneficiary episode relative to the national median (1.0 = national median).
Total beds
Total beds reported to CMS (Provider of Services file).