Our Commitment to You
Championing open access to healthcare data for improved patient outcomes.
At CareSet, we believe that open and accessible healthcare data is essential for improving patient outcomes and driving progress in the industry. That’s why we are committed to making this information available to all who need it and why we will continue to advocate for its accessibility in the years to come. CareSet exists to make healthcare data transparent.
Pioneer
100%
Parts A, B, and D
10+
200+
HOW IT STARTED
Where Open Medicare Data Began
We believe that open and accessible healthcare data is essential for improving patient outcomes and driving progress in the healthcare industry. That belief led to CareSet’s founding in 2012, when co-founder Fred Trotter filed a FOIA request with CMS to understand how physicians refer patients. When the data arrived, we released it publicly. That commitment to transparency enabled others to build analysis on the same information, creating momentum around the importance of open healthcare data.
2012 to 2013
The FOIA breakthrough
A family member’s life-changing diagnosis sparked the questions that led to a FOIA request. The answer became public data
- DocGraph dataset released to the public
- Scale-free network research consortium launched
The FOIA breakthrough
A family member's life-changing diagnosis sparked the questions that led to a FOIA request. The answer became public data.
- DocGraph dataset released to the public
- Scale-free network research consortium launched
From open data to usable insight
CareSet turned raw claims into tools providers and payers could act on, and secured the deepest tier of CMS access.
- Built ACOs reducing referral leakage and fraud
- First US entity granted 100% CMS A and B FFS plus Part D access
National recognition
The DocGraph Hop Teaming Dataset, the first open map of how Medicare providers collaborate, drew ProPublica, The Wall Street Journal, and the White House.
- DocGraph Healthcare Data Liberator Award, 2015
- White House Open Data Innovation Summit and Biden Cancer Moonshot Summit
Real-time public health
CareSet partnered with the White House, CMS, and HHS to apply Medicare claims data to the COVID-19 response in real time.
- White House COVID data initiatives
- CMS upgrades: monthly data access with a two-week lag
Depth and stewardship
CareSet deepened its scientific bench and continues to open data alongside CMS.
- Senior RWE architects and a Medical Advisory Board
- Full data pipelines: HCP, HCO, Pharmacy, and Networks
- Leading the National Provider Directory initiative with HHS
2013 to 2015
From open data to usable insight
CareSet turned raw claims into tools providers and payers could act on, and secured the deepest tier of CMS access.
- Built ACOs reducing referral leakage and fraud
- First US entity granted 100% CMS A and B FFS plus Part D access
2015 to 2020
National recognition
The DocGraph Hop Teaming Dataset, the first open map of how Medicare providers collaborate, drew ProPublica, The Wall Street Journal, and the White House.
- DocGraph Healthcare Data Liberator Award, 2015
- White House Open Data Innovation Summit and Biden Cancer Moonshot Summit
2020 to 2021
Real-time public health
CareSet partnered with the White House, CMS, and HHS to apply Medicare claims data to the COVID-19 response in real time.
- White House COVID data initiatives
- CMS upgrades: monthly data access with a two-week lag
The FOIA
Breakthrough
A family member’s life-changing diagnosis sparked the questions that led to a FOIA request. The answer became public data.
From Open Data to Usable Insight
CareSet turned raw claims into tools providers and payers could act on, and secured the deepest tier of CMS access.
National Recognition
The DocGraph Hop Teaming Dataset, the first open map of how Medicare providers collaborate, drew ProPublica, The Wall Street Journal, and the White House.
Real-Time Public Health
CareSet partnered with the White House, CMS, and HHS to apply Medicare claims data to the COVID-19 response in real time.
Depth and Stewardship
CareSet deepened its scientific bench and continues to open data alongside CMS.
RECOGNITION & IMPACT
balancing public interest and commercial innovation
CareSet’s work has been recognized by federal agencies, national press, and the analytics community, and it shows up where it matters most: in the decisions pharmaceutical teams make and the patients they reach.
DocGraph Healthcare Data Liberator Award
Awarded by AcademyHealth at Health Datapalooza for extraordinary contributions to the liberation of health data. The DocGraph Hop Teaming Dataset was the most comprehensive open map of the U.S. healthcare system.
First to earn CMS VRDC Innovator access
In 2015, we were the first company to receive a CMS Data Use Agreement with VRDC access. Later in 2020, we earned VRDC Innovator access giving us MONTHLY claims data and the most up-to-date and complete picture of Original Medicare, Parts A, B and D.
COVID-19 response with federal partners
Partnered directly with the White House, CMS, and HHS to apply Medicare claims expertise to pandemic decision-making, a direct extension of the DocGraph data liberation work.
Building the National Provider Directory
A driving force behind the National Provider Directory with HHS, and a partner to the Digital Medicine Society, building open infrastructure that serves researchers, industry, and the public alike.
OPEN DATA SINCE 2012
OPEN DATA SINCE 2012
CareSet has released a new DocGraph dataset to the public every year since 2012, beginning with the first open map of how Medicare providers refer and collaborate. That commitment to open data continues today.
DocGraph is available for both commercial and non-commercial use, so researchers, journalists, and industry teams can start from the same foundation we built.
DocGraph Hop Teaming, the referral and collaboration network of U.S. providers.
Check out our Data StoreLed by a team that knows Medicare data at its source
Leadership
Backgrounds in data science, healthcare analytics, pharmaceutical commercial strategy, and federal data infrastructure.
Ashish Patel
CEO & CO-FOUNDER
Works at the intersection of data infrastructure, network science, and healthcare policy, with deep expertise in Medicare claims and healthcare data. He has partnered with federal agencies, health data initiatives, and academic institutions.
John Beriont
CHIEF COMMERCIAL OFFICER
Began at Johnson & Johnson and Bristol-Myers Squibb, then held senior executive roles at Quintiles Transnational, HealthSTAR Communications, PDI, Inc., and M3 USA, and founded two companies. Across more than 35 years he has worked both the manufacturer and services sides of the pharmaceutical industry.
Michael Antonoff
CHIEF OPERATING OFFICER
Spent two decades making healthcare data useful, as Executive Director of Enterprise Business and Data Services at MD Anderson, Director of Data Science at Well Health, and founder of Tinova Advisors. He teaches Advanced Analytics in Healthcare at Rice University and oversees operations, data delivery, and compliance.
Sepideh Naseri
CHIEF DATA & ANALYTICS OFFICER
Joined CareSet in 2025 overseeing data science, engineering, and analytics, with more than two decades building AI platforms and analytics infrastructure in healthcare and financial services. She holds a master’s in AI and Robotics from Tehran University and completed executive education at UVA’s Darden School of Business.
A Note on Fred Trotter
Fred Trotter is CareSet’s founding CTO. In May 2025, he joined the Digital Service at CMS to work directly on the National Provider Directory. CareSet participates in the NPD ecosystem as a formal contributor. Fred’s CMS role is independent from CareSet’s commercial operations.