Last updated on March 30th, 2026

Hospitalist physician groups play a pivotal role in the US healthcare system, specializing in the comprehensive care of hospitalized patients. These groups have grown significantly, both in size and influence, often reflected in their substantial Physician Counts. Below is a detailed overview of the 20 largest hospitalist physician groups in the United States, ranked by their total Physician Counts.

Top 20 Hospitalist Physician Groups by Physician Counts

RankPhysician Group NameLocation (City, State)Physician CountsData
1Mayo Clinic ArizonaScottsdale, AZ2012Explore Data
2Wake Forest University Health SciencesClemmons, NC1112Explore Data
3Colorado Permanente Medical Group, P.C.Denver, CO1109Explore Data
4The University of Chicago Medical CenterChicago, IL1113Explore Data
5University Physicians IncorporatedAurora, CO,1656Explore Data
6Montefiore Medical CenterBronx, NY795Explore Data
7Osu Internal Medicine, LlcColumbus, OH246Explore Data
8Lahey Clinic IncBurlington, MA384Explore Data
9New York UniversityNew York983Explore Data
10Carolinas Medical CenterCharlotte, NC513Explore Data
11Summit Medical Group PaBerkeley Heights, NJ195Explore Data
12Unm Medical Group IncAlbuquerque, NM569Explore Data
13NovaCare RehabilitationCook County123Explore Data
14Permanente Medical Group IncSan Leandro, CA138Explore Data
15Southern California Permanente Medical GroupSan Diego, CA383Explore Data
16University of Vermont Medical Center IncBurlington, VT228Explore Data
17University Medical Service Association IncTampa, FL360Explore Data
18Umass Memorial Medical Group IncWorcester, MA928Explore Data
19Dartmouth-Hitchcock ClinicLebanon, NH291Explore Data
20The Duluth Clinic LtdDuluth, MN245Explore Data

Table 1: Real time data from Ampliz healthcare Intelligence. Data Accessed on January 2026.

Understanding the Rankings

The rankings above are based on total Physician Counts, which serve as a proxy for the volume and complexity of services provided by these physician groups. It’s important to note that while some groups, such as Texas Oncology and Florida Cancer Specialists, are primarily focused on oncology, they often employ hospitalists to manage inpatient care for their patients. Similarly, organizations like US Anesthesia Partners, though centered on anesthesia services, may have hospitalist divisions contributing to their Physician Counts.

Accessing Hospitalist Physician Group Contacts

For professionals and organizations aiming to connect with these leading hospitalist physician groups, having access to accurate and comprehensive contact information is crucial. Ampliz, a renowned healthcare database provider, offers an extensive repository of healthcare contacts. Their database includes over 4.6 million physician contacts and more than 8,200 hospital contacts, ensuring that users can efficiently reach key decision-makers within these organizations.

About Ampliz Healthcare Database

Ampliz stands out as a leading provider of healthcare data intelligence, offering tailored solutions to meet diverse business needs. Key features of Ampliz’s healthcare database include:

  • Comprehensive Coverage: Access to millions of healthcare professionals, including physicians, nurses, and executives.
  • Customization: Ability to filter contacts based on specific criteria such as specialty, location, and practice type.
  • Data Accuracy: Regular updates and verification processes ensure high data accuracy and reliability.
  • Multi-Channel Marketing Support: Facilitates outreach through various channels, including email, direct mail, and telemarketing.

By leveraging Ampliz’s healthcare database, businesses can enhance their marketing strategies, streamline recruitment processes, and foster meaningful collaborations within the healthcare sector.

Conclusion

The landscape of hospitalist physician groups in the U.S. is both vast and dynamic, with numerous organizations playing critical roles in patient care. Understanding the scale and reach of these groups, as evidenced by their Physician Counts, provides valuable insights into their operations and influence. For those looking to engage with these top-tier physician groups, utilizing resources like Ampliz’s healthcare database can be instrumental in establishing effective and impactful connections.

Subbu

V. Subramanyam
Head of Product at Ampliz | Growth-focused B2B Leader

V. Subramanyam is a Head of Product at Ampliz with a strong focus on driving growth and innovation. As the Head of Product at Ampliz, I leads the development and strategic direction of cutting-edge solutions that empower businesses to leverage high-quality healthcare data for better decision-making. With years of experience in product management and leadership, I have deep industry knowledge with a customer-centric approach to deliver value-driven products that accelerate business success. And I am passionate about using data intelligence to transform businesses and create impactful outcomes.