Healthcare Insights

Top 20 physician groups using Epic Systems EHR

Similar to hospitals and other healthcare facilities, physician groups use electronic health records (EHRs) to track a patient through their care journey. However, most physician groups primarily use ambulatory EHRs, which are specifically designed to meet the needs of small physician practices and outpatient centers.

Many physician groups use Epic Systems Corporation, which is one of the largest EHR vendors in the country. Epic has the highest percentage of market share amongst its competitors, at about 37%.

Below, we used the Definitive Healthcare PhysicianGroupView product to rank the largest physician groups in the country that use Epic as their EHR provider.

Largest physician groups that use Epic Systems EHR

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Rank	Physician group name	City	State	Number of physicians	Explore dataset
1	Southern California Permanente Medical Group	Downey	CA	12,022	Explore
2	The Permanente Medical Group	Davis	CA	10,712	Explore
3	Select Physical Therapy	King Of Prussia	PA	8,630	Explore
4	Mayo Clinic Physicians	Rochester	MN	5,342	Explore
5	HealthCare Partners IPA	Garden City	NY	5,042	Explore
6	Geisinger Health Physicians	Danville	PA	3,621	Explore
7	Hill Physicians Medical Group	Walnut Creek	CA	3,585	Explore
8	NYU Langone Health Physicians	Staten Island	NY	3,535	Explore
9	Cleveland Clinic	Cleveland	OH	3,515	Explore
10	Mount Sinai Doctors	New York	NY	3,367	Explore
11	Beaumont Health Physicians	Westland	MI	3,067	Explore
12	University of Pittsburgh Physicians	Lititz	PA	3,052	Explore
13	Massachusetts General Hospital Physicians	Boston	MA	3,007	Explore
14	Penn Medicine Physicians	Philadelphia	PA	2,837	Explore
15	University of Michigan Health	Ann Arbor	MI	2,788	Explore
16	Ochsner Health Physicians	New Orleans	LA	2,684	Explore
17	Yale New Haven Health Physicians	New Haven	CT	2,625	Explore
18	Johns Hopkins Physicians	Baltimore	MD	2,589	Explore
19	Emory Healthcare Physicians	Johns Creek	GA	2,559	Explore
20	University of Colorado Medicine Physicians	Aurora	CO	2,516	Explore

Fig. 1 Data is from Definitive Healthcare’s PhysicianGroupView database. Data is accurate as of September 2022.

What is the largest physician group that uses Epic ambulatory EHR?

Southern County Permanente Medical Group is the largest physician group we track that uses Epic’s EHR system. Located in Downey, California, the group has more than 12,000 physicians in the group. In second place is The Permanente Medical Group based out of Davis, California with just over 10,000 physicians.

Both Southern California Permanente Medical Group and The Permanente Medical Group are part of the same integrated delivery network (IDN), Kaiser Permanente, one of the largest IDNs in the country. Many physician groups are associated with IDNs, because that association gives them access to more resources while IDNs can expand their services to serve patients in various communities. In addition, many IDNs select ambulatory EHR that they require all affiliated physician groups to use.

Rounding out the top three is Select Physical Therapy in King of Prussia, Pennsylvania. Select Physical Therapy is one of the largest physical therapy networks in the U.S. with over 8,000 physicians across a wide range of specialties.

What is the difference between inpatient and ambulatory EHR?

While inpatient and ambulatory EHRs may seem similar at first glance, they are actually designed for different purposes in a patient’s healthcare journey. In most cases, ambulatory EHRs tend to be simpler than their inpatient counterparts. Ambulatory EHRs manage a single practice and its patients, rather than a complex web of hospital departments serving thousands of patients.

Inpatient EHRs are designed for patients that need to stay overnight for their care and have needs across multiple departments for their care. Because of these requirements, inpatient EHRs are often used more by hospitals and other long-term care facilities.

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