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EHR market share in California: Epic runs 31% of hospital EHRs

Epic is the inpatient EHR at 81 of the 263 California hospitals with an EHR on file in the Dmand AI database, 31%. Oracle Cerner follows with 78 hospitals (30%), then Altera Digital Health with 23 (9%). Counted on October 28, 2026.

Supreet Gupta, Co-founder and Chief Product Officer, Dmand AI

Updated Data: Dmand AI database

Location
California
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California hospitals with an inpatient EHR on file, of 417
263
run Epic, the most common EHR in California
31%
of US hospitals run Epic, for comparison
38%
run one of the four largest EHRs in California
78%

Which EHR do California hospitals use?

California hospitals run 16 different inpatient EHRs. The chart shows the four that run the most of them.

Epic runs more California hospitals than any other EHR

Hospitals by inpatient EHR, 263 hospitals, October 2026
  1. Epic81
  2. Oracle Cerner78
  3. Altera Digital Health23
  4. TruBridge22
  5. 12 other EHRs59

Source: Dmand AI database, October 28, 2026. One EHR per hospital.

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How California compares with US hospitals

California is number 3 of 54 states, DC and territories by hospitals with an inpatient EHR on file. The table puts the share of each of the four largest EHRs in California beside its share of all 5,507 US hospitals with one.

Hospitals with an inpatient EHR on file in California, by EHR, with the US share
EHRHospitalsShare in CaliforniaShare in the US
Epic8131%38%
Oracle Cerner7830%23%
Altera Digital Health239%3%
TruBridge228%7%
12 other EHRs5922%–
Hospitals with an inpatient EHR on file in California, by EHR, with the US shareSource: Dmand AI database, October 28, 2026.

How we counted hospital EHR market share

Universe
California hospitals with a CMS certification number in the Dmand AI database: 417 hospitals.
What counts
The inpatient EHR recorded for each hospital. 263 hospitals have one on file; the other 154 are left out of every share on this page.
One EHR each
Each hospital counts once, under one EHR. Shares are of hospitals, not of beds or revenue.
US shares
The same count for all US hospitals with an inpatient EHR on file, on the same date.
Date
Counted on October 28, 2026. Refreshed monthly; the Updated date changes only when a count changes.
What this page does not show

Counts by EHR and place only. This page never names the EHR at a single hospital; that is in the Dmand AI app, on each hospital's profile. State pages name the four largest EHRs in the state and count the rest together. Ambulatory EHRs at clinics and physician practices are not counted.

Cite this data

Suggested citation

Dmand AI. "EHR market share in California." Dmand AI Insights, updated October 28, 2026. https://dmand.ai/insights/ehr-market-share/california

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Sources

  1. Hospital technology and inpatient EHR recordsDmand AI database
Supreet Gupta

Written by

Supreet Gupta

Co-founder and Chief Product Officer, Dmand AI

Supreet is the co-founder and Chief Product Officer of Dmand AI. He leads the product and the healthcare data behind it, and writes Selling Into Healthcare, a newsletter on how US health systems buy.

FAQ

Hospital EHR questions sales teams ask

Short answers from the same counts.

What is the most used EHR in California hospitals?

Epic. It is the inpatient EHR at 81 of the 263 California hospitals with an EHR on file in the Dmand AI database, 31%, as of October 28, 2026.

Which other EHRs do California hospitals use?

After Epic, the largest are Oracle Cerner with 78 hospitals (30%), Altera Digital Health with 23 (9%) and TruBridge with 22 (8%). In all, 16 EHRs are recorded at California hospitals. The EHR at each hospital is in the Dmand AI app.

How does California compare with the US?

Epic runs 31% of California hospitals with an EHR on file and 38% of all US hospitals with one. California is number 3 of 54 states, DC and territories by hospitals with an EHR on file.

How often is this data updated?

Monthly. The counts come from the Dmand AI database, and the Updated date changes only when a count changes.

Hospital technology data

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