GBB - Key Persons


Christopher Macchiaroli

Job Titles:
  • Partner at Silverman Thomspon

Daniel Guttman

Job Titles:
  • of Counsel
  • Counsel to the Firm 's Washington
Daniel Guttman serves as Of Counsel to the Firm's Washington, DC. Office. He has focused his law practice on energy, environment, antitrust, whistleblower cases brought under the Federal False Claims act and employment law. He previously served as a partner at Spiegel McDiarmid where he represented cities and states throughout America. He pioneered litigation that led to the application of anti-monopoly law to electric companies and subsequent negotiation of power supply, transmission and coordination arrangements among publicly owned and investor owned utilities. Mr. Guttman represented nuclear weapons workers in litigation relating to the cleanup of the US nuclear weapons complex that led to the 2000 enactment by Congress of the Nuclear Workers Compensation law. This work also led to the Department of Energy moratorium on the recycling of radioactive waste for commercial use, school workers in litigation that led to 1986 enactment of the "Asbestos in Schools" law, whistleblowers in litigation that led to hundreds of millions of dollars of recovery by the US government from oil companies and military contractors, janitors in litigation finding Washington DC real estate companies in violation of the District of Columbia Human Rights law, and nuclear workers in litigation that led to a U.S. court finding that the privatization of the U.S. Enrichment Corporation was a model of how not to privatize. He has been pro bono counsel to NGOs engaged in gender equity in international development funding and economic development in the Horn of Africa, and was recipient of a Marshall Fund grant to advise on energy efficiency in the Czech Republic. Mr. Guttman served in the Administration of President Clinton as Executive Director of President Clinton's Advisory Committee on Human Radiation Experiments (directing a staff of about 60 in investigation of Cold War era government sponsored human experiments and contemporary human subject research). He was appointed by President Clinton to serve as a Commissioner of the U.S. Occupational Safety and Health Review Commission. He was special counsel to Senator David Pryor in investigations of the use of contractors to do the basic work of government. In China he has been UNDP advisor to the All China Environment Federation. Mr. Guttman is also a distinguished scholar and professor, focusing on energy/environment, worker health and safety and public management issues. Following two years as Fulbright scholar in China, his work has focused on the development of cooperative and comparative governance, law and environment educational programs involving US and China institutions. In the U.S., he is a Lecturer at the Whiting School of Engineering/Department of Geography and Environment and Fellow at the Center for Advanced Government Study as well as a Distinguished Visiting Scholar at the Emory University Halle Institute. In China he is visiting Professor at the Peking University School of Law public law clinic interest program, where he is co-author of the textbook (实践中的公益法 (Public Interest Law in Practice);. visiting Senior Fellow at the Tsinghua University US/China Center, and Research Professor at the Nanjing University School of Environment. He teaches at the New York University Shanghai campus, Shanghai Jiao Tong University and coordinates China Programs for the University of California Santa Barbara Bren School of Environmental Science and Management. Dan Guttman moderated University of Pennsylvania Wharton China Center/Fudan University Institute for Global Public Policy webinar on China/US comparative challenges of ageing population. The webinar is part of a Penn/Fudan series on comparative China/US governance which Dan is helping to organize. Practice Areas Energy and Environment/Environmental Public Health

David B Burritt

Job Titles:
  • US Steel 's President and Chief Executive Officer

Dr. Lisa Wollman

Job Titles:
  • Science and Medical Advisor
Lisa Wollman, MD is a graduate of The University of Pennsylvania and The Albert Einstein College of Medicine. She completed a residency in Anesthesia as well as two fellowships in Cardiac Anesthesia and Intensive Care Medicine at Massachusetts General Hospital. She went on to become an attending anesthesiologist at MGH and an Assistant Professor at Harvard Medical School for 22 years during which time she received multiple teaching awards as well as several Partners in Excellence Awards. In 2015 Dr. Wollman left MGH to serve as a staff anesthesiologist at New England Baptist Hospital, employed by Beth Israel Lahey Health Center, where she practices today. Dr. Wollman filed a False Claims Act case against MGH and Partners, now known as MassGeneralBrigham, pertaining to false claims submitted to the government for over a thousand overlapping surgeries conducted by physicians in the Orthopedic Department, which was settled in 2022 for $14.6M dollars. The case, U.S. ex rel. Wollman v. MGH et al., Civil Action No., 15-11890-ADB, was filed in federal Court in Boston in 2015. Dr. Wollman continues her clinical practice in anesthesia and serves as an expert witness in current litigation.

Duane Holloway

Job Titles:
  • Senior Vice President, General Counsel, and Chief Ethics and Compliance Officer at US Steel

Hon. John M. Walker

Job Titles:
  • Law Clerk

Hon. Suzanne B. Conlon

Job Titles:
  • Law Clerk

Judge Nancy Gertner

Job Titles:
  • Judge Nancy Gertner ( Ret. )

Law Flash

Job Titles:
  • Head

Teresa Gerton - President

Job Titles:
  • President
Dan Guttman was interviewed by US National Academy of Public Administration (NAPA) President Teresa Gerton, on "Working with China and Other Global Partners." Dan, a NAPA Fellow, is co-organizer of an Australia/China/US comparative climate adaptation research project co-sponsored by NAPA and the Fudan University Institute for Global Public Policy. https://napawash.org/podcasts/working-with-china-and-other-global-partners-with-dan-guttman