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Kate F. Stewart


[email protected]



Kate’s practice involves a variety of regulatory and transactional matters for healthcare providers, including hospitals, physician groups, clinical laboratories, retail health clinics, and pharmacies.

Kate counsels health care clients on HIPAA compliance, telemedicine practice, licensure and scope of practice issues, clinical trial compliance, physician contracting and the federal Physician Payments Sunshine Act.

For both Covered Entities and Business Associates, she has advised on initial implementation and updates to HIPAA-mandated policies and procedures, contracting matters, and analysis of and response to potential breaches under HIPAA and state data breach rules. She provided in-house HIPAA guidance to a third-party administrator during a secondment from the firm.

In her transactional practice, Kate advises providers, payers, and investors in mergers and acquisition and joint ventures.

Kate also counsels a variety of nonprofit organizations on entity formation, governance, tax-exemption issues, and mergers and acquisitions.

Prior to joining Mintz, Kate served as a law fellow at the O’Neill Institute for National and Global Health Law at Georgetown University. Her work there focused on international health governance, pre-exposure prophylaxis for HIV/AIDS, and food and drug safety issues.

Kate was a summer associate with the firm in 2009.


  • Georgetown University (JD)
  • Johns Hopkins Bloomberg School of Public Health (MPH)
  • Tufts University (BA)


  • Provided state and federal health care regulatory advice to American Well, a pioneer in telehealth technology.


  • Member, Health Care Financial Managers Association
  • Advisor Co-Editor, HFMA
  • Member, American Health Lawyer Associate
  • Member, American Bar Association

Recent Insights

News & Press


Viewpoint General

HIPAA and Health Care Data Privacy - 2018 Year-in-Review

January 4, 2019 | Blog | By Sarah Beth Kuyers, Kristen Marotta, Kate Stewart

Today, we’re looking back at HIPAA and other privacy and security developments in 2018.  This past year saw continued HIPAA enforcement (including the largest ever fine for a HIPAA breach), reminders from the OCR on best practices for HIPAA compliance, and updates to state and international privacy and security laws.  We’ll also look ahead to 2019, which could bring several significant changes to HIPAA, such as reducing the burdens for sharing patient information in order to promote care coordination and better patient outcomes.
Viewpoint General
Drug and device manufacturers will need to update their reporting systems and provide new training to their sales staff in the coming years based on changes to the Physician Payment Sunshine Act included in the final opioid package passed last week. Beginning with data reported in 2022, the Sunshine Act will cover payments made to advanced practice nurses and physician assistants. The change will also impact state laws requiring the reporting of payments made to these provider types, which will be preempted by federal law.
Employers with workers in Massachusetts will have a lot to do between now and October 1, 2018, when reforms to Massachusetts non-compete laws go into effect.

Potential Changes to PAMA Reporting in Medicare Physician Fee Schedule Rule

July 30, 2018 | Blog | By Karen Lovitch, Kate Stewart

Clinical laboratories and hospitals should note the potential changes to the Protecting Access to Medicare Act of 2014 (“PAMA”) reporting requirements tucked into the 1,400 page Physician Fee Schedule Proposed Rule (the “Proposed Rule”) released by CMS earlier this month.

Privacy and Security Round-up – Colorado Data Breach Law, Guidance from OCR

June 20, 2018 | Blog | By Kate Stewart, Sarah Beth Kuyers

Privacy and security compliance obligations for health care companies remain hot topics this spring. Health care companies must now contend with data breach laws in all 50 states as well as keeping on top of federal HIPAA developments.
Late last month, Senators Grassley (R-IA), Brown (D-OH), and Blumenthal (D-CT) introduced the Fighting the Opioid Epidemic with Sunshine Act, a bill that would expand Physician Payment Sunshine Act reporting requirements to cover payments and other transfers of value made to advance practice nurses and physician assistants.
Earlier this week, our colleague Don Davis addressed the increasing amount of disability discrimination litigation against health care entities on the Employment Matters Blog.

Antitrust Alert: Blue Cross Blue Shield Antitrust Litigation

April 16, 2018 | Blog | By Kate Stewart

In a recent Antitrust Alert, our colleagues Dionne Lomax, Bruce Sokler, Robert Kidwell, and Shawn Skolky discuss the allegations in the consolidated class actions, In re Blue Cross Blue Shield Antitrust Litig., the court’s analysis, and its market implications.
Mintz and ML Strategies will host the 3rd Annual Pharmacy & Pharmaceutical Industry Summit on May 8, 2018! This year's summit will take place in Boston and we are thrilled to announce that Massachusetts Governor Charlie Baker will be the keynote speaker. 
Our colleagues at ML Strategies have provided their Health Care Weekly Preview for the week of July 24, 2017. This week's preview focuses on the Better Care Reconciliation Act and Senate parliamentary rules. 

News & Press

Mintz is advising a consortium of investors led by TPG Capital and Welsh, Carson, Anderson & Stowe in their acquisition of Curo Health Services, one of the nation’s leading hospice providers. The definitive agreement was announced on April 23, 2018. The deal is valued at approximately $1.4 billion.
Kate Stewart, an Associate in the Mintz Health Law practice, is quoted in this Medical Economics article on business associate agreements, noting that “the policies and implementation practices surrounding BAAs” are areas that may require further review.
Karen Lovitch, the leader of Mintz’s Health Law practice, and Kate Stewart, Mintz Health Law Associate, authored this Bloomberg Medicare Report article on the Centers for Medicare & Medicaid Services’ issuing of the Final Rule.