Jonathan Oates

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...

Neil Eggleston is a litigation partner in the Washington, D.C., office of Kirkland & Ellis LLP. Neil has a distinguished record of public service, and has held a number of senior government roles. He was White House Counsel to President Obama from 2014 to 2017, and advised the president on all legal and constitutional issues across a broad spectrum of domestic and foreign policy matters. Neil’s practice focuses on enforcement defense including at the U.S. Department of Justice (DOJ)...

Mr. Fox is the managing partner of Ivins, Phillips & Barker. He was named in 2012 by the Washingtonian Magazine for the fourth straight year as one of the outstanding tax lawyers in Washington, D.C., in the Washington Post Magazine's list of Super Lawyers for the third straight year, and has been named in Best Lawyers in America in each of the last ten consecutive years. Although, during his 47 years with the firm, Mr. Fox devoted a substantial portion of his activities to international a...

Ama Adams is a top attorney recognized by Best Lawyers in the practice area(s) of International Trade and Finance Law. Ama, 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 Ama is held by other top lawyers in the same geographic and legal practice area.

Jeffrey A. D. Cohen is a top attorney recognized by Best Lawyers in the practice area(s) of Corporate Law. Jeffrey A. D., who practices law in McLean, Virginia, has been recognized since 2015. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Jeffrey A. D. is held by other top lawyers in the same geographic and legal practice area.

Mr. Colten was born in New York City and has been a long-time resident of Virginia. After serving as Assistant Commonwealth's Attorney in Fairfax County for two years, Mr. Colten entered private practice in Northern Virginia. He was a founding member and principal of Surovell, Jackson, Colten & Dugan, P.C. and its predecessor and successor firms, prior to forming Colten | Watson | Vincent Law Group P.C. In 1965, Mr. Colten received his B.S. with a major in sociology from American Universi...

David J. Ross is a top attorney recognized by Best Lawyers in the practice area(s) of Government Relations Practice and International Trade and Finance Law. David J., who practices law in Washington, District of Columbia, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which David J. is held by other top lawyers in the same geographic and legal practice area.

David M. McCullough is a top attorney recognized by Best Lawyers in the practice area(s) of Energy Law. David M., 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 David M. is held by other top lawyers in the same geographic and legal practice area.

Ms. Knapp is a partner at Shounbach having joined the firm in 2013. Her legal career has been dedicated entirely to the practice of family law since completing a two year judicial clerkship with the Honorable William D. Hamblen (Ret.) in Prince William County Circuit Court. Ms. Knapp graduated from George Mason University School of Law 2011, however, law is a second career for Ms. Knapp. Prior to law school, she worked in public and media relations for six years, gaining oral and written advo...

Azim Chowdhury advises domestic and international corporations on regulatory compliance with the U.S. Food and Drug Administration (FDA) and its global counterparts, particularly focusing on vapor, nicotine, tobacco product and cannabis/cannabidiol (CBD) regulation, as well as food contact materials. He counsels tobacco, e-cigarette, e-liquid and CBD manufacturers, distributors, retailers, suppliers, and trade associations on matters relating to regulatory compliance, as well as public policy...