David is Chairman Emeritus of McNees Wallace & Nurick, after serving as Chairman of the Firm for 12 years.  He now serves as Chair of the McNees PAC and Co-Chairs the McNees Strategic Solutions Group.

David is also a member of the Energy & Environmental and Government Relations Practice Groups.  He represents large commercial and industrial consumers of fixed utility services including electricity, natural gas, water/wastewater, and communications, as well as providers of these services.  David led legislative and regulatory initiatives to restructure these industries for customer benefit.  He has appeared before over 15 state public utility commissions, the FERC, and numerous state and federal appellate courts.  David is a registered lobbyist for the Firm and several of the Firm’s Clients.

David resides in Hummelstown with his wife, Joanne, and has two adult children, Bret and Lisa.


The Pennsylvania State University, B.A., 1977, with highest distinction; Phi Beta Kappa

Temple University School of Law, J.D., 1980, cum laude, Temple Law Quarterly, 1978-1980 (Associate Pennsylvania Project Editor, 1979-1980)



American Bar Association

Pennsylvania Bar Foundation

Pennsylvania Bar Association

Jonathan Eshenour Foundation, Board Member

Pa Chamber of Business & Industry, Board Member, Vice Chair 2015-2017

The Pennsylvania State University, Board of Trustees

The Pennsylvania State University, College of Liberal Arts Political Science Department, Board of Visitors, Chair 2013-2015

The Foundation for Enhancing Communities, Past Board Member, Chair 2011-2012

Team Pennsylvania Foundation, Board Member, Vice Chair 2014-2015

The United Way of the Capital Region Board Member, Vice Chair 2015, Campaign Chair 2013


U.S. District Court – Middle District of Pennsylvania

U.S. Supreme Court


Central Penn Business Journal Executive of the Year, 2009

The Best Lawyers in America®, Energy Law, 1991-present

Pennsylvania Super Lawyers®, 2005-2006

Bar Admissions



August 15, 2019 - 33 McNees Attorneys Among 2020 Best Lawyers in America, 7 Named Lawyer of the Year

December 5, 2018 - McNees Chairman Emeritus to Serve as PA Chamber Board Chair

August 15, 2018 - 35 McNees Attorneys Among 2019 Best Lawyers in America

July 17, 2018 - McNees Named in Central Penn Business Journal’s 2018 Reader Rankings

May 25, 2018 - McNees Chairman presented with the 2018 Christianson Award

April 5, 2018 - McNees Wallace & Nurick LLC honored by United Way

November 15, 2017 - McNees Chairman to be honored by New Birth Of Freedom Council, BSA

August 15, 2017 - 38 McNees Attorneys Selected as 2018 Best Lawyers in America

December 5, 2016 - McNees Chairman David M. Kleppinger Elected as First Vice Chair of The Pennsylvania Chamber of Business and Industry’s Board of Directors

November 28, 2016 - McNees Chairman David Kleppinger unanimously confirmed to Penn State Board of Trustees

August 15, 2016 - 37 McNees Attorneys Selected by 2017 Best Lawyers in America

June 6, 2016 - MidPenn Legal Services executive director received United Way’s Grady Award

March 4, 2016 - David M. Kleppinger Elected Chair of The United Way of Capital Region Board

December 4, 2015 - McNees Chairman, David M. Kleppinger, Elected PA Chamber Vice-Chair

August 17, 2015 - 39 McNees Attorneys Selected by 2016 Best Lawyers in America 7 named 2016 “Lawyers of the Year’’

August 10, 2015 - McNees Wins Harrisburg Magazine's "Best Law Firm" Reader's Choice Award

July 13, 2015 - McNees Named Best of Harrisburg's 2015 Best Law Firm

July 9, 2015 - McNees Chairman, David M. Kleppinger, Elected Team PA Vice-Chair

May 26, 2015 - McNees Welcomes Summer Associates