California stands as one of the largest healthcare markets in the United States, with a robust network of physician groups serving millions of patients across the state. According to Ampliz Healthcare Data Intelligence, there are 11,772 largest physician groups in California, ranging from large multi-specialty networks to small independent practices.
These groups play a crucial role in patient care coordination, clinical research, and healthcare delivery efficiency. Whether you’re a healthcare marketer, medical supplier, or pharma representative, identifying the right physician groups is essential for precision targeting and high-ROI outreach.
That’s where Ampliz Healthcare Intelligence comes in, providing powerful solutions to accelerate your expansion.
Capitalizing on Largest Medical Groups in California for Healthcare Outreach
The top medical groups in California play a pivotal role in shaping the healthcare landscape. As primary providers of care, they are frequently the initial touchpoint for individuals in need of medical services. Healthcare marketers can strategically leverage partnerships with these organizations to successfully advocate for products, services, and health-related campaigns.
Top 22 List of Physician Groups in California
California’s healthcare landscape includes some of the most well-recognized physician networks. Here are examples of leading physician groups known for patient volume, care quality, and market reach:
| Rank | CA Physician Group Name | Physician Counts | Medicare Charges | Access Data |
| 1 | Momentum for Mental Health | 590 | $2,304,060,883 | Signup Now |
| 2 | Southern California Permanente Medical Group | 386 | $2,272,084,292 | Signup Now |
| 3 | Sansum Clinic | 106 | $2,251,402,378 | Signup Now |
| 4 | Providence Speech and Hearing Center | 80 | $2,171,554,059 | Signup Now |
| 5 | Orthopaedic Specialty Institute Medical Group of Orange County | 59 | $2,103,550,888 | Signup Now |
| 6 | Union of Pan Asian Communities | 54 | $1,490,043,646 | Signup Now |
| 7 | Maxum Physical Therapy Inc | 54 | $1,405,553,391 | Signup Now |
| 8 | Alcott Center for Mental Health Services | 46 | $1,376,195,768 | Signup Now |
| 9 | West Coast Spine Restoration Center | 38 | $1,021,419,465 | Signup Now |
| 10 | Alpine Orthopaedic Medical Group Inc | 30 | $965,366,784 | Signup Now |
| 11 | Associated Therapists Inc | 29 | $921,114,097 | Signup Now |
| 12 | Pacific Clinics | 28 | $903,543,228 | Signup Now |
| 13 | Shanti Orange County | 27 | $886,541,618 | Signup Now |
| 14 | Sports and Orthopedic Leaders Inc | 24 | $848,236,626 | Signup Now |
| 15 | Hearing and Speech Center of Northern California | 22 | $782,767,994 | Signup Now |
| 16 | Arthritis Medical Clinic | 20 | $772,629,763 | Signup Now |
| 17 | Family HealthCare Network | 19 | $732,967,037 | Signup Now |
| 18 | Berkeley Therapy Institute | 18 | $673,434,519 | Signup Now |
| 19 | Valley Community Healthcare | 17 | $645,542,990 | Signup Now |
| 20 | Alliance Medical Center | 17 | $619,695,400 | Signup Now |
| 21 | Berkeley Cardiovascular Medical Group | 17 | $388,510,000 | Signup Now |
| 22 | Rocklin Physical Therapy Inc | 16 | $384,440,000 | Signup Now |
Data is from the Ampliz Healthcare Data Intelligence product. The number of Physicians represents only those listed as “active” in our database as of October 2025. Data accessed October 2025.
Key Features of Ampliz Healthcare Intelligence
Extensive Database: Ampliz features a broad database of medical groups in California, covering a wide range of specialties and locations. This comprehensive database ensures that you can effectively connect with the right audience.
Reliable and Current Information: Ampliz prioritizes accuracy and up-to-date data, providing trustworthy contact details, including email addresses and phone numbers.
Powerful Search Filters: Ampliz includes a set of advanced search filters that allow you to refine your search by criteria like specialty, location, practice size, and more, ensuring your outreach is focused and efficient.
Enhanced Data Insights: Beyond basic contact details, Ampliz offers valuable data such as practice affiliations, hospital connections, and professional ties. This enriched information helps you tailor your marketing efforts and foster stronger relationships with medical groups.
Seamless Data Export and Integration: Ampliz enables easy export of data in various formats, allowing for smooth integration with your CRM or marketing automation tools. This feature streamlines your processes and boosts your efficiency.
How Ampliz Healthcare Intelligence Assists in Finding Contact Information
To effectively use Ampliz Healthcare Intelligence for locating medical groups in California, follow these steps:
Sign Up for Access: Create an Ampliz account to unlock the platform’s full capabilities.
Use the Search Filters: Take advantage of advanced search filters to define your ideal audience, specifying criteria like specialty, location, practice size, and other relevant factors.
Refine Your Search: The user-friendly interface of Ampliz allows you to further narrow your search results, helping you connect with the most relevant medical groups in California.
Obtain Contact Details: After identifying your target audience, Ampliz provides essential contact information, including email addresses and phone numbers.
Export and Integrate: Export the data in your preferred format and seamlessly incorporate it into your existing marketing tools.
Further Strategies for Maximizing Effectiveness
Utilize Data Enrichment: Expand beyond basic contact details by tapping into additional data offered by Ampliz, including practice and hospital affiliations. This extra information can be key to personalizing your outreach and making it more impactful.
Keep Your Data Updated: Ampliz regularly refreshes its database to maintain accuracy. Ensure your contact information stays current by updating your data on a regular basis.
Follow Legal Guidelines: Always comply with relevant laws, such as CAN-SPAM, when reaching out to medical groups in California. Be mindful of their time and preferences, and make sure your communications are both relevant and valuable.
Conclusion
California’s 11,772 physician groups represent vast opportunities for healthcare marketers and industry professionals. With Ampliz, you can connect with the right physician networks to grow your business, strengthen outreach, and improve engagement outcomes across the state.
Ampliz Healthcare Intelligence stands out as a vital resource for healthcare marketing professionals aiming to engage with the largest medical groups in California. Offering access to a detailed and reliable database, advanced search options, and valuable data enhancement features, Ampliz simplifies the process of obtaining contact details. By leveraging this platform, you can improve your outreach, strengthen connections with physician groups in California, and successfully reach your marketing goals.
FAQ: Physician Groups in California
1. How many physician groups are there in California?
According to Ampliz Healthcare Data, there are 11,772 physician groups in California, including both large multi-specialty organizations and smaller independent practices.
2. What are the largest physician groups in California?
Some of the largest physician groups include Kaiser Permanente Medical Group, Sutter Health Medical Group, and Cedars-Sinai Medical Group.
3. How can I access verified physician group data in California?
You can access verified and updated contact details of 11,772 California physician groups using Ampliz Healthcare Data Intelligence Platform.
4. Why should marketers target physician groups in California?
California offers one of the biggest markets for healthcare services, and targeting physician groups enables efficient sales outreach, better ROI, and stronger provider relationships.
5. Does Ampliz provide physician group contacts by specialty or location?
Yes. Ampliz allows users to filter physician groups by specialty, city, state, or hospital affiliation to refine outreach and improve conversion rates.
