Diane Ung

Partner

Diane Ung is a partner and health care lawyer with Foley & Lardner LLP in the Los Angeles office. Diane focuses her practice on federal and state health care legislation and payment issues arising under government programs such as Medicare and Medicaid. Her practice includes regulatory, legislative, health care, and business matters for public agency clients and non-profit hospitals and clinics. Diane has specific experience in structuring Medicaid financing for safety net providers in the context of disproportionate share hospital payment programs, federal Medicaid demonstrations authorized under Section 1115 of the Social Security Act, and Medicaid managed care. Diane is a senior member of the firm’s Health Care Practice Group.

Diane represents county health and behavioral health departments, county, and local public agency managed care organizations, public hospitals and health care systems, and various large publicly operated teaching hospitals. She has helped clients evaluate and develop Medicaid demonstration and waiver projects that implement innovative programs for Medicaid beneficiaries. Diane has drafted Medicaid legislation, including statutes involving disproportionate share hospital (DSH) payment adjustment systems, and has advised clients on regulatory compliance, including Medicaid program audits of supplemental payments conducted by the DHHS Office of the Inspector General (OIG). She has counseled clients in connection with strategic alliances, and the restructuring of public health agencies and the evaluation of public/private partnerships, including the transfer of a public hospital to a nonprofit entity. Diane also has advised public and not-for-profit clients on matters involving federally qualified health centers (FQHC), the 340B drug pricing program, and on behavioral health integration.

Prior to beginning her legal career, Diane was a facility health planner and health services researcher for a major health maintenance organization.

Awards and Recognition

  • Chambers USA: America’s Leading Lawyers for Business, Healthcare (2021-2023)
  • Southern California Super Lawyers® since 2014
  • The Best Lawyers in America® since 2013, Health Care Law

Affiliations

  • Member, American Health Lawyers Association
  • Member, California Society for Healthcare Attorneys
  • Member, Los Angeles County Bar Association
    • Previously served as chair of the Healthcare Law Section
  • Previously served on the board of directors of the Women in Health Administration of Southern California, serving as its president in 2007 and 2008

Presentations and Publications

  •  White Paper: Voluntary Behavioral Health Integration in Medi-Cal (co-authored with Anil Shankar), for California Health Care Foundation, October 2019
24 April 2024 Honors and Awards

Kimberly Klinsport and Diane Ung Honored Among Top 100 Lawyers in Los Angeles

Foley & Lardner LLP partners Kimberly Klinsport and Diane Ung are named among the Top 100 Lawyers in Los Angeles by the Los Angeles Business Journal.
17 August 2023 Honors and Awards

Foley Attorneys Recognized in 2024 Best Lawyers in America

Foley & Lardner LLP proudly announced today that 236 of the firm’s attorneys across 20 U.S. offices have received recognition in the 2024 edition of The Best Lawyers in America©.
01 June 2023 Press Releases

Foley Earns Top Rankings in Chambers USA 2023

Foley & Lardner LLP is pleased to announce that it has again been recognized by Chambers & Partners as one of the top law firms in the country in the 2023 edition of Chambers USA, America’s Leading Lawyers for Business.
10 January 2023 Honors and Awards

Foley Attorneys Named to 2023 Southern California Super Lawyers List

Foley & Lardner LLP is pleased to announce that four of its Los Angeles attorneys have been named to the 2023 Southern California Super Lawyers list.
18 August 2022 Press Releases

Foley Attorneys Recognized in 2023 Best Lawyers in America

Foley & Lardner LLP proudly announced that 250 of our attorneys across 20 offices have received recognition in the 2023 edition of The Best Lawyers in America.
01 June 2022 Press Releases

Foley Ranks Among Nation’s Top Law Firms in Chambers USA 2022

Foley has again been recognized by Chambers & Partners as one of the top law firms in the 2022 edition of Chambers USA, America’s Leading Lawyers for Business.