Largest emergency and hospital medicine groups in the US
- Groups
- 2,612
- Emergency Medicine groups
- 2,359
- Hospitalist groups
- 253
- Emergency physicians
- 43,677
- Hospitalist specialists
- 629
There are 2,612 emergency and hospital medicine groups in the US with a Medicare PAC ID: 2,359 emergency medicine and 253 hospitalist. Vituity is the largest emergency medicine group, with 2,258 emergency physicians, and Pacific Hospitalist Associates the largest hospitalist group, with 77 hospitalist specialists.
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Vituity is the largest emergency medicine group in the US, with 2,258 emergency physicians
Ranked by emergency physicians linked to each group whose main sub-specialty is emergency medicine. Vituity is second with 1,913, and TeamHealth (Emergency Coverage Corporation of TeamHealth) third with 1,322.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
Pacific Hospitalist Associates is the largest hospitalist group in the US, with 77 hospitalist specialists
Ranked by hospitalist specialists linked to each group whose main sub-specialty is hospitalist. Advanced Pediatrics & Family Care, Whiteville is second with 55, and Vituity third with 53.
Sources: Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Affiliation Data
California has the most emergency and hospital medicine groups, with 339
Texas is second with 242 and Louisiana third with 203. Every state with 5 or more groups has its own list.
- California339
- Texas242
- Louisiana203
- Florida164
- Georgia126
- Ohio122
- New York109
- Illinois86
- Michigan83
- New Jersey83
- Tennessee66
- Pennsylvania65
- Alabama58
- North Carolina56
- Missouri55
- Arizona54
- Massachusetts49
- Oklahoma48
- Colorado45
- Mississippi42
- Virginia38
- Maryland37
- Indiana35
- Wisconsin33
- Washington32
- Kentucky31
- Nevada28
- South Carolina27
- Oregon23
- Kansas22
- West Virginia20
- Connecticut19
- Iowa17
- Minnesota17
- Arkansas13
- Hawaii13
- Nebraska11
- New Hampshire11
- Delaware10
- New Mexico10
- Utah9
- Wyoming9
- Alaska8
- Idaho6
- Maine6
- Montana6
- North Dakota4
- Puerto Rico4
- Rhode Island4
- Vermont4
- South Dakota2
- U.S. Virgin Islands2
- Washington, DC1
Source: Doctors and Clinicians National Downloadable File (CMS)
SCP Health has the most physicians in US emergency and hospital medicine groups, with 5,559 across 141 groups
231 parent organizations have two or more US emergency and hospital medicine groups. Among health systems, West Virginia University Health System has the most groups, 14. Each clinician counts once per parent organization.
See every medical group, site and clinician under SCP Health
Org Hierarchy Explorer maps every group, site of care and clinician under the parent, with the leaders at each group.
Source: Dmand AI Org Hierarchy Data
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Dmand AI maps the owners, administrators and physician leaders at each of the 2,612 US emergency and hospital medicine groups, with the parent organization above each one, and finds validated work emails and mobile numbers.
30% of US emergency and hospital medicine groups are independent, with no larger parent organization
A group counts as independent when no health system, platform or other organization sits above it in the org hierarchy. Every other group belongs to a larger organization.
US emergency and hospital medicine groups by ownership
- Independent796
- Health system or hospital597
- Platform or corporate owner762
- Community or government65
- Other organization392
Sites of care beyond their own offices
See the parent organization above every US group
Dmand AI maps each group to the health system, physician platform or management company above it, so you can sell to the owner, not one site.
Source: Dmand AI Org Hierarchy Data
Each US emergency and hospital medicine group profile shows the parent, sites, clinicians and identifiers
- Clinicians and specialtiesA count by specialty and a sample of the group's cliniciansOn every profile
- Practice locationsMain site and a sample of practice locations, with a count of the restOn every profile
- Medicare Part B paymentsMedicare payments to the group, from CMSOn every profile
- Group NPI and Medicare PAC IDIdentifiers for matching records across sourcesOn every profile
- Parent organizationThe health system, platform or owner above the groupOn every profile
- Every clinician and siteThe full roster and every practice locationWith a free account
- Leader and clinician contactsWork emails and mobile numbers, found on request and then validatedWith a free account
- EHR used by the group's cliniciansThe EHR in use at the group's sitesWith a free account
Free account: 30 days free, self-serve, no credit card.
Sources: Doctors and Clinicians National Downloadable File (CMS), Medicare Physician & Other Practitioners (CMS) and Dmand AI Org Hierarchy Data
Sources for the US emergency and hospital medicine group list
| Data on this page | Source |
|---|---|
| Medical groups, specialties and sites | Doctors and Clinicians National Downloadable File (CMS) and Dmand AI Professional Profile Data |
| Parent organizations and independence | Dmand AI Org Hierarchy Data |
| Physicians and HCPs | Dmand AI Affiliation Data |
| Group NPI and PAC ID | NPPES NPI Registry (CMS) and Doctors and Clinicians National Downloadable File (CMS) |
Data last refreshed October 2026Report an inaccuracyRemove my information
Groups whose main specialty is emergency and hospital medicine and that have a Medicare PAC ID.
FAQ
Frequently asked questions about US emergency and hospital medicine groups
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is the largest emergency medicine group in the US?
Vituity, based in Modesto, California, with 2,258 emergency physicians and 4,475 HCPs. Vituity is second with 1,913.
What is the largest hospitalist group in the US?
Pacific Hospitalist Associates, based in Newport Beach, California, with 77 hospitalist specialists and 101 HCPs. Advanced Pediatrics & Family Care, Whiteville is second with 55.
How many emergency and hospital medicine groups are in the US?
There are 2,612 emergency and hospital medicine groups in the US with a Medicare PAC ID: 2,359 emergency medicine and 253 hospitalist. Between them they have 43,677 emergency physicians and 629 hospitalist specialists.
Which state has the most emergency and hospital medicine groups?
California, with 339, followed by Texas with 242 and Louisiana with 203.
Which companies own the most emergency and hospital medicine groups?
By physicians, SCP Health, with 5,559 across 141 groups, followed by US Acute Care Solutions with 5,779 and Apollomd with 1,377.
How many emergency and hospital medicine groups are independent?
796, or 30%, have no larger parent organization in the Dmand AI org hierarchy. 597 belong to a health system or hospital and 762 to a physician platform or corporate owner.
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