- Editorial Board, Springer Monographs in Mathematics, 1995-present

- Committee on Haimo Awards, Mathematical Association of America, 2015-2019

- Associate Editor,
*Complex Analysis and its Synergies*, 2014-present

- Council on Prizes and Awards, Mathematical Association of America, 2009-2015

- Chair, Committee on Professional Ethics, American Mathematical Society, 2009-2010

- Committee on Professional Ethics, American Mathematical Society, 2007-2010

- Program Committee, Mathematical Association of America MathFest, 2007

- Electorate Nominating Committee, American Association for the Advancement of Science, Mathematics Section, 2006-2009

- Chair, Committee on Lester Ford Awards, Mathematical Association of America, 2008

- Committee on Lester Ford Awards, Mathematical Association of America, 2006-2008

- Steering Committee, Board of Trustees, Mathematical Sciences Research Institute (Berkeley), 2005-2008

- Chair, Committee of Academic Sponsors, Mathematical Sciences Research Institute (Berkeley), 2005-2008

- Advisory Board, EMANI (Electronic Mathematical Archiving Network Initiative), 2004-2007

- Editorial Board, Graduate Texts in Mathematics (Springer), 1995-present

- Editorial Board, Undergraduate Texts in Mathematics (Springer), 1995-present

- Editorial Board, Universitext (Springer), 1995-present

- Correspondent,
*Mathematical Intelligencer*, 1992-present

- Nominating Committee, American Mathematical Society, 2002-2005

- Organizer, Conference on Operators and Function Theory (UC Berkeley), 2003

- Organizer, Special Session on Holomorphic Spaces, American Mathematical Society meeting, 2000

- Chair, Committee on Lester Ford Awards, Mathematical Association of America, 1999

- Committee on Lester Ford Awards, Mathematical Association of America, 1997-1999

- Committee on Academic Freedom, Tenure, and Employment Security, American Mathematical Society, 1995-1998

- Newsletter Editorial Committee, Mathematical Association of America, 1994-1997

- Mathematics Advisory Board, Wolfram Research, 1994-1996

- Co-chair, semester on Holomorphic Spaces, Mathematical Sciences Research Institute (Berkeley), 1995

- Co-chair, Summer Research Conference on Bergman Spaces, American Mathematical Society, 1994

- Chair, Chauvenet Prize Committee, Mathematical Association of America, 1994

- Program Committee, Mathematical Association of America, Michigan Section , 1991, 1994-1995

- Program Committee, annual meeting of the Mathematical Association of America, 1994

- Publications Committee, American Mathematical Society, 1993-1995

- Editorial Committee,
*Notices of the American Mathematical Society*, 1993-1994

- Committee on Copyright Policy, American Mathematical Society, 1992-1993

- Committee to Review Member Publications, American Mathematical Society, 1992-1993

- Chauvenet Prize Committee, Mathematical Association of America, 1992-1993

- Council of the American Mathematical Society, 1990-1993

- Organizing Committee, Functional Analysis Conference (University of Michigan), 1989

- Chair, Joint Program Committee, summer meeting, American Mathematical Society and the Mathematical Association of America, 1989

- Joint Program Committee, winter meeting, American Mathematical Society and the Mathematical Association of America, 1989

- Editor-in-Chief,
*Mathematical Intelligencer*, 1987-1991

- Committee to Monitor Problems in Communication, American Mathematical Society, 1987-1990

- Associate Editor,
*American Mathematical Monthly*, 1982-1986

- Organizer, Special Session on Banach Spaces of Analytic Functions, American Mathematical Society meeting, 1982