Harold N. Iselin is the Managing Shareholder of the firm's Albany office and Co-Chairs the firm’s Government Law and Policy Practice. He focuses his practice on governmental affairs, health care, and insurance matters, representing diverse clients before the New York State executive branch and state legislature. Additionally, he has represented numerous clients in managed care and insurance transactions, often involving complex regulatory issues.

According to Chambers USA 2019 Guide, sources describe Harold as "phenomenal, extremely knowledgeable and pragmatic." He was described by sources in the 2018 Guide as “the best healthcare regulatory lawyer going, period,” and being “superbly connected with government agencies.”

Prior to joining the firm, Harold was a trial attorney in the U.S. Department of Justice, following which he became Assistant Counsel to the Governor of New York with responsibility for transportation, education, veteran's affairs and freedom of information matters.