Healthcare Insights

Top 20 largest California health systems by number of beds  

California is the largest state in the U.S by population. Its 40 million residents rely on thousands of health centers across the state for their medical needs. Many of these healthcare facilities are part of broader integrated delivery networks (IDNs) so that patients’ needs can be properly addressed across a wide range of specialties.

Using Definitive Healthcare’s HospitalView product, we created a list of the 20 IDNs with the most beds in California. The number of staffed beds within a facility or IDN provides a useful metric to measure its patient capacity.

IDNs with the most staffed beds in California

Explore dataset

Rank	IDN	Definitive ID	# of hospital beds in CA	Explore dataset
1	Kaiser Permanente	4713	8808	Explore
2	CommonSpirit Health	981465	5847	Explore
3	University of California Health	560423	4716	Explore
4	Providence St Joseph Health	4716	4010	Explore
5	Sutter Health	4717	3911	Explore
6	Prime Healthcare Services	542003	2675	Explore
7	Adventist Health	4694	2427	Explore
8	Tenet Healthcare	4685	2341	Explore
9	HCA Healthcare	4710	1596	Explore
10	Universal Health Services	7055	1571	Explore
11	Department of Veterans Affairs	7265	1534	Explore
12	County of Santa Clara Health System	992313	1223	Explore
13	MemorialCare Health System	4875	1196	Explore
14	Stanford Medicine	938977	1153	Explore
15	KPC Group	778798	1139	Explore
16	ScionHealth	1043246	1082	Explore
17	Prospect Medical Holdings	575843	1027	Explore
18	US Department of Defense Military Health System	551508	658	Explore
19	Signature Healthcare Services	7056	625	Explore
20	Vibra Healthcare	542027	496	Explore

Fig. 1. Data is from Definitive Healthcare’s HospitalView product. Data is accurate as of November 2022.

Which health systems have the most staffed beds in California?

Kaiser Permanente has the most staffed beds in California with 8,808. Its network is comprised of 36 hospitals across the state, putting it at the top of our list. This Oakland-based health system also has facilities in Hawaii, Washington, Oregon, Colorado, Maryland, Virginia, and Georgia and runs the largest managed care organization in the United States.

In second place is CommonSpirit Health with 5,847 staffed beds in California. This health system is based in Chicago, but currently operates 32 hospitals in the state of California. CommonSpirit was formed in 2019 through the combination of Catholic Health Initiatives and Dignity Health, thus creating one of the largest healthcare systems in the country. All of its healthcare facilities in California are operated through Dignity Health, which has numerous locations across the western United States.

In third place is University of California Health, headquartered in Oakland. This health system has 4,716 staffed beds across the state. It’s the only health system on the list that operates exclusively in California, with 22 hospitals in the state. Its hospitals and academic health centers are currently ranked among the best in California and the nation.

Why are IDNs important to healthcare?

Integrated delivery networks are similar to accountable care organizations (ACOs) in that they use large networks of healthcare providers across multiple specialties to provide the highest quality of care possible. While ACOs can span multiple networks, an IDN’s structure enables patients to receive all the care that they need within one network. Keeping patients in-network improves collaboration and communication throughout their treatment and also prevents revenue loss from network leakage.

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