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Ranked listRefreshed monthly

The 10 largest hospitals in California by affiliated HCPs

Stanford Hospital at 300 Pasteur Drive has the most affiliated HCPs of any hospital in California, 5,935, followed by UCSF Helen Diller Medical Center at Parnassus Heights in San Francisco (4,556) and UCI Health - Orange in Orange (3,928).

Updated HCPs with a current affiliation in the Dmand AI databaseHow we ranked

Rank by
Location
California
  1. Stanford Hospital at 300 Pasteur DriveStanford · Stanford University5,935HCPs
  2. UCSF Helen Diller Medical Center at Parnassus HeightsSan Francisco · University of California Health4,556HCPs887beds
  3. UCI Health - OrangeOrange · UC Irvine3,928HCPs
  4. Ronald Reagan UCLA Medical CenterLos Angeles · University of California Health3,611HCPs446beds
  5. Hillcrest Medical CenterSan Diego · University of California Health3,404HCPs
  6. UC Davis Medical CenterSacramento · University of California Health3,229HCPs654beds
  7. Cedars-Sinai Medical CenterLos Angeles · Cedars-Sinai Health System3,136HCPs913beds
  8. Hoag Hospital Newport BeachNewport Beach · Hoag Memorial Hospital Presbyterian2,606HCPs512beds
  9. Sutter Medical Center, SacramentoSacramento · Sutter Health2,423HCPs523beds
  10. UCLA Santa Monica Medical CenterSanta Monica · University of California Health2,286HCPs281beds

The 10 highest of 405 California hospitals that report affiliated HCPs. Ranks compare size, not quality of care.

Every hospital in California

The median California hospital has 307 HCPs

405 California hospitals report affiliated HCPs. The median hospital has 307 HCPs, so Stanford Hospital at 300 Pasteur Drive is about 19 times that size.

the size of the median California hospital, which has 307 HCPs
19×
of the 405 California hospitals that report affiliated HCPs
2.5%

How we ranked the top California hospitals

Measure
HCPs with a current affiliation in the Dmand AI database.
What counts as a hospital
One CMS certification number. A hospital with several campuses under one number counts once.
Field
405 California hospitals in the Dmand AI database report affiliated HCPs.
Ties
Hospitals with the same number share a rank.
What a rank means
Size only. A rank compares affiliated HCPs; it says nothing about quality of care.
Refresh
Monthly. Updated Oct 28, 2026.

FAQ

Questions about the top California hospitals

Answers from the same data, updated monthly.

Which California hospital has the most affiliated HCPs?

Stanford Hospital at 300 Pasteur Drive in Stanford, with 5,935 HCPs. UCSF Helen Diller Medical Center at Parnassus Heights is second with 4,556.

What are the top 10 California hospitals by affiliated HCPs?

Stanford Hospital at 300 Pasteur Drive (5,935), UCSF Helen Diller Medical Center at Parnassus Heights (4,556), UCI Health - Orange (3,928), Ronald Reagan UCLA Medical Center (3,611), Hillcrest Medical Center (3,404), UC Davis Medical Center (3,229), Cedars-Sinai Medical Center (3,136), Hoag Hospital Newport Beach (2,606), Sutter Medical Center, Sacramento (2,423), UCLA Santa Monica Medical Center (2,286).

How many affiliated HCPs does a typical California hospital have?

The median California hospital that reports affiliated HCPs has 307 HCPs, out of 405 that report them.

How often is this list updated?

Every month, when the Dmand AI database refreshes. This version is from Oct 28, 2026.

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