Ensure compliance at scale, enabling scalable and repeatable outreach.<\/li>\n<\/ul>\n\n\n\nMarketing to gastroenterology physician groups is critical<\/strong> their centralized buying power, high procedure volume, and networked structures make them ideal for impactful campaigns. But reaching the right people demands precision data and timing. Ampliz healthcare data intelligence<\/strong> gives you that precision\u2014helping you connect with the correct stakeholder at the right time, with the right message.<\/p>\n","protected":false},"excerpt":{"rendered":"Last updated on March 30th, 2026 Introduction Gastroenterology is among the fastest-growing specialties in US healthcare. With over 1,500 active gastroenterology physician group practices operating across the country, these groups are hubs for delivering endoscopy, diagnostic, treatment, and specialist care for GI diseases. Why focus on the largest practices? These groups\u2014such as Texas Digestive Disease Consultants and Gastro Health\u2014operate hundreds of clinicians across multiple states. Targeting such large-scale organizations enables healthcare vendors to secure high-volume contracts, foster strategic partnerships, and streamline sales and marketing efforts into centralized physician networks. In this post, we explore the 10 largest GI group practices by headcount, delve into the main challenges in accessing decision-makers, and discuss how Ampliz healthcare data intelligence can empower effective marketing outreach. Top 10 Largest Gastroenterology Physician Group Practices in the US Rank Group Name Physicians Data Set 1 Comprehensive Breast Care PLLC 779 Access Now 2 Southern California Permanente Medical Group 386 Access Now 3 Pain Control Associates LLC 117 Access Now 4 South Louisiana Medical Associates 75 Access Now 5 Mowery Clinic LLC 42 Access Now 6 Bryn Mawr Medical Specialists Association 38 Access Now 7 White Wilson Medical Center PA 34 Access Now 8 Radiology Associates of Tallahassee PA 31 Access Now 9 Minnesota Gastroenterology (MN) 29 Access Now 10 BSA Amarillo Diagnostic Clinic Inc 27 Access Now How Many Gastroenterology Physician Group Practices Are There? Ampliz Healthcare reports 1,541 active gastroenterology physician group practices in the US. Importantly, this refers to legal entities it doesn\u2019t count every clinic location or hospital-employed GI physician. Many of these groups manage multiple clinics, offering broader patient coverage. Why Focus on the Largest GI Groups? Challenges in Finding Decision-Makers Despite their appeal, large GI groups pose several outreach challenges: Marketing to GI Physician Groups Using Ampliz Ampliz provides curated healthcare data intelligence, enabling focused and compliant outreach to GI group practices. Here\u2019s how: Conclusion & Total US Count Reaching Them for Marketing Your Healthcare Products & Services Using Ampliz\u2019s healthcare database platform, you can: Marketing to gastroenterology physician groups is critical their centralized buying power, high procedure volume, and networked structures make them ideal for impactful campaigns. But reaching the right people demands precision data and timing. Ampliz healthcare data intelligence gives you that precision\u2014helping you connect with the correct stakeholder at the right time, with the right message.<\/p>\n","protected":false},"author":13,"featured_media":3640,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[151,2009],"tags":[2254,2255,2256],"class_list":["post-3639","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-physician-groups-by-speciality","category-us-physician-groups","tag-gastroenterology-physician-groups","tag-gastroenterology-physician-groups-practices","tag-top-gastroenterology-physician-groups-in-us"],"_links":{"self":[{"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/posts\/3639","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/users\/13"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/comments?post=3639"}],"version-history":[{"count":1,"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/posts\/3639\/revisions"}],"predecessor-version":[{"id":4321,"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/posts\/3639\/revisions\/4321"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/media\/3640"}],"wp:attachment":[{"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/media?parent=3639"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/categories?post=3639"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ampliz.com\/resources\/wp-json\/wp\/v2\/tags?post=3639"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}