Diane E. Ambler

Michelle L. Butler provides counsel on government pricing, health care, and FDA law in the area of prescription drugs and biologics. Across these practice areas, she specializes in the interpretation of complex regulations. Ms. Butler advises clients on changes in health care law and how these changes affect calculation and reporting across government pricing programs, specifically the Medicaid Drug Rebate Program, the 340B Program, the Medicare Part B Average Sales Price calculation, and the...

Matt Wetzel is a top attorney recognized by Best Lawyers in the practice area(s) of Health Care Law. Matt, who practices law in Washington, District of Columbia, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matt is held by other top lawyers in the same geographic and legal practice area.

Ricardo Carvajal works with manufacturers and marketers of food and dietary supplements, OTC drugs, and cosmetics on a range of FDA, USDA, and FTC regulatory issues. Mr. Carvajal advises clients ranging from start-ups to multinational companies at all points in the supply chain, including bulk ingredient manufacturers, distributors of packaged goods, and retailers. He counsels clients on the regulatory status of ingredients and finished products, and provides advice on compliance with labelin...

Chair of Stein Sperling’s nationally regarded tax law group, David De Jong is a recognized and highly sought industry authority with more than 40 years of experience. Raised in Montgomery County, David always intended to practice law in his “home town”. He has been instrumental in maintaining Stein Sperling’s collegial, small-firm feel while helping its tax department grow into a regional powerhouse. David has a gift for putting himself in his clients’ shoes to g...

Todd Metz focuses his practice on disputes, with experience in arbitration proceedings as well as litigation relating to major domestic and international construction projects. His practice also focuses on the consultation, preparation and dispute resolution of claims arising out of domestic and international construction projects. His experience includes representation of contractors, owners, and design professionals before domestic and international arbitration tribunals, dispute adjudicati...

Jonathan G. Hardin is a top attorney recognized by Best Lawyers in the practice area(s) of Litigation - Insurance. Jonathan G., who practices law in Washington, District of Columbia, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jonathan G. is held by other top lawyers in the same geographic and legal practice area.

Michael D. Hausfeld is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law and Litigation - Antitrust. Michael D., who practices law in Washington, District of Columbia, has been recognized since 2006. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Michael D. is held by other top lawyers in the same geographic and legal practice area.

Carolé C. Krogmann is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law and Family Law Mediation. Carolé C., who practices law in McLean, Virginia, has been recognized since 2019. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Carolé C. is held by other top lawyers in the same geographic and legal practice area.

Jennifer S. Joffe is a top attorney recognized by Best Lawyers in the practice area(s) of Family Law. Jennifer S., who practices law in Fairfax, Virginia, has been recognized since 2018. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jennifer S. is held by other top lawyers in the same geographic and legal practice area.

For more information, please visit www.gibsondunn.com/lawyer/scalia-eugene/ .