Healthcare Insights
Largest radiology physician group practices
When you’re selling a healthcare product, software, or service, physician groups can be appealing targets. These multi-practice providers tend to centralize their purchasing decisions, enabling bulk sales and long-term partnerships.
To maximize the impact of your marketing to physician group practices, you should use market intelligence to identify the most valuable targets. Physician group size and specialty are two useful metrics for narrowing your target list. How many radiology physician group practices are there in the U.S.?
Our database has data on 1,748 active radiology physician group practices in the U.S. However, physician groups usually operate several different locations to maximize patient access. Because of this, the number of physician group practices does not reflect the number of radiology practices in the United States.
Why target radiology physician groups?
Targeting a private practice doctor instead of a hospital or health system can make it easier to connect with executives and decision-makers. Since many private practice doctors are part of a physician group, they should be a key target for your marketing efforts.
The doctors at radiology physician groups are specialists in diagnosing and treating injuries and diseases using medical imaging procedures, such as magnetic resonance imaging (MRI), computed tomography (CT), X-rays, and ultrasound. Radiologists require proper technology, equipment, and staff training—typically acquired from organizations like yours—to improve their patients’ health outcomes and quality of life.
| Rank | Radiology physician group name | State | Definitive ID | Number of physicians | Explore dataset |
|---|---|---|---|---|---|
| 1 | Mayo Clinic Physicians | MN | 550420 | 5,620 | Explore |
| 2 | Ballad Health Physicians | TN | 1023540 | 4,432 | Explore |
| 3 | Novant Health UVA Health System Physicians | VA | 1027748 | 2,333 | Explore |
| 4 | University of Virginia Health System Physicians (FKA University of Virginia Physician Group) | VA | 671888 | 2,328 | Explore |
| 5 | Tower Health Physicians (FKA Tower Health Medical Group) | PA | 981417 | 2,175 | Explore |
| 6 | Newton-Wellesley Hospital Physicians | MA | 1039901 | 1,999 | Explore |
| 7 | Saint Lukes Health System Physicians | MO | 1034935 | 1,669 | Explore |
| 8 | MD Anderson Cancer Center Physicians (FKA MD Anderson Physicians Network) | TX | 977597 | 1,241 | Explore |
| 9 | Answer Health (FKA Physicians Organization of West Michigan) | MI | 585475 | 1,179 | Explore |
| 10 | Commonwealth Health Physicians | PA | 1001568 | 998 | Explore |
| 11 | UTMB Health Physicians (FKA UTMB Faculty Group Practice) | TX | 645282 | 917 | Explore |
| 12 | Saint Marys Health Network Physicians (FKA Saint Marys Medical Group) | NV | 552890 | 787 | Explore |
| 13 | Kaweah Delta Health System Physicians | CA | 994453 | 766 | Explore |
| 14 | The Orthopedic Hospital Physicians | IN | 1057129 | 676 | Explore |
| 15 | Rayus Radiology (FKA Center for Diagnostic Imaging) | MN | 589006 | 645 | Explore |
| 16 | SMH Physicians Network | LA | 662283 | 642 | Explore |
| 17 | All Childrens Specialty Physicians | FL | 553276 | 618 | Explore |
| 18 | Meritus Health Physicians (FKA Meritus Medical Group) | MD | 713916 | 610 | Explore |
| 19 | Moffitt Cancer Center Physicians | FL | 1032606 | 585 | Explore |
| 20 | BronxCare Health System Physicians (FKA BronxCare Network) | NY | 654017 | 561 | Explore |
Fig. 1 Analysis of data from the Definitive Healthcare PhysicianGroupView product. The number of practices represents those listed as “active” in our database as of October 2025.
What is the largest radiology physician group in the U.S.?
Mayo Clinic Physicians is the largest radiology physician group in the country based on number of physicians, with 5,620 physicians. This physician group also makes the list of physician groups with the highest Medicare payments.
Ballad Health Physicians has the second-largest number of physicians, with 4,432 physicians.
Finally, Novant Health UVA Health System Physicians has the third largest number of physicians, with 2,333 physicians.
Looking for more insights on radiology? Check out our analysis of the top radiology CPT codes, or our list of the largest urology physician groups.
Trends in radiology
AI
Radiology is rapidly evolving, with AI now core to daily workflows. AI is now embedded in clinical workflows, helping detect abnormalities, flag urgent findings, and draft preliminary reports. Tools powered by natural language processing and computer vision are improving speed and accuracy, though they also raise issues around liability, oversight, and integration.
New technologies & a focus on sustainability
Alongside AI, imaging hardware is evolving fast. Technologies like photon-counting CT (PCCT) offer higher resolution with lower radiation, and whole-body MRI is gaining popularity in preventive health. New imaging systems coming to the market are also smaller, greener, and more efficient, helping imaging centers reduce their energy costs while increasing the life cycle of their technologies.
Shifts in care
Imaging is moving beyond the hospital. Outpatient centers, mobile units, and remote reading hubs are expanding access and reducing costs. But this decentralization brings infrastructure challenges, including secure data systems, multi-state licensing, and uneven reimbursement. Still, the shift aligns with what patients want: speed, convenience, and broader availability.
Burnout
Radiologists and technologists alike are demanding more flexible work models, yet operational demands continue to grow. To stay competitive, organizations must invest in workflow automation, hiring pipelines, and burnout prevention. However, burnout is rising due to high volume, complex cases, and staffing shortages.
Tips for targeting radiology physician groups
The challenges and priorities of each physician group are unique, so your marketing approach should be unique for each group. Leverage information like tech install data, procedure and claims data, and Medicare charges to personalize your outreach for maximum efficiency.
Focus on how your product, technology, or service can improve patient outcomes, enhance diagnostic capabilities, or optimize operations—whichever challenges are most pressing for the physician group.
Showing real-world applications of your solution and the benefits it provides can help the physician group see how your product, software, or technology can help their specific scenario.
Learn more
We create our Healthcare Insights using intelligence from the Definitive Healthcare platform. To explore additional data points and power a more intelligent sales strategy by creating tailored messaging for key decision-makers, start a free trial now and get access to the latest procedure data, Medicare charges, and claims and affiliation insights for physicians, physician groups, and various healthcare facilities.
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