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Leadership

Officers

Simpson H. Gardyn
Managing Officer

Simpson H. Gardyn

Simpson H. Gardyn, CPA, CVA
Irvin Flax
Officer

Irvin Flax

Irvin Flax, CPA
Douglas M. Lederman
Officer

Douglas M. Lederman

Douglas M. Lederman, CPA
Joseph A. Liberman
Officer

Joseph A. Liberman

Joseph A. Liberman, CPA, MS
John K. Lyons
Officer

John K. Lyons

John Lyons, JD, CPA, MBA GSG Tax
Scott D. Rodgville
Officer

Scott D. Rodgville

Scott D. Rodgville, CPA
W. James Schiller
Officer

W. James Schiller

Jim Schiller GSG CPA
Alan Spero
Officer

Alan Spero

Alan Spero GSG CPA
Marc Weill
Officer

Marc Weill

Marc Weill, CPA

Principals, Directors and Managers

Thomas Colegrove
Manager
Tax Services

Thomas Colegrove

Thomas Colegrove GSG CPA
Timothy A. Crockett
Associate Director
Tax Services

Timothy A. Crockett

Timothy A. Crockett GSG CPA
Angela Dmitrieva
Manager
Tax Services

Angela Dmitrieva

Angela Dmitrieva GSG CPA Tax
Jennifer Estrada
Senior Manager
Audit and Accounting Services

Jennifer Estrada

Jennifer Estrada, CPA
Chuck Faunce
Director
Business Valuation & Litigation Support

Chuck Faunce

Chuck Faunce, ASA
Hillel Frankel
Senior Manager
Tax Services

Hillel Frankel

Hillel Frankel GSG CPA Tax
Victoria M. Hitchcock
Manager
Audit and Accounting Services

Victoria M. Hitchcock

Victoria M. Hitchcock, CPA
Adina Hollander
Manager
Tax Services

Adina Hollander

Adina Hollander GSG CPA Tax
Patrick Hom
Principal
Tax Services

Patrick Hom

Patrick Hom, CPA, MST GSG Tax Services
Steven M. Kaplon
Senior Manager
Audit and Accounting Services

Steven M. Kaplon

Steven M. Kaplon, CPA
Matthew Keefer
Principal
Tax Services

Matthew Keefer

Matthew Keefer
Rose Lambert
Principal
Audit and Accounting Services

Rose Lambert

Rose Lambert, CPA
D. John Mahaffey
Principal

D. John Mahaffey

D. John Mahaffey, CPA, CVA, CGMA
Michael Mandish
Principal
Tax Services

Michael Mandish

Michael Mandish GSG CPA
Michael Schuck
Principal

Michael Schuck

Michael Schuck, CPA
Laura C. Shuman
Manager
Small Business

Laura C. Shuman

Laura Shuman GSG CPA
Alan Stein
Principal
Audit and Accounting Services

Alan Stein

Alan Stein GSG CPA
Mark T. Warren
Director
Business Consulting

Mark T. Warren

Mark T. Warren, MS
(410) 356-5900
About GSG
  • Leadership
  • Professional Affiliations
  • History
  • GSG In The News
  • Press Releases
Services
  • Audit & Accounting
  • Tax
  • Consulting
  • Small Business
  • Business Valuation & Litigation Support
Industry Expertise
  • Construction
  • Employee Benefit Plans
  • Food Processing
  • Government Contracting
  • Higher Education
  • Hospitality
  • Labor Organizations
  • Manufacturing
  • Not-for-Profit
  • Real Estate
Resources
  • GSG Blog
  • Tax Resources
  • 2018 Tax Planning Guide
  • Financial Tools and Calculators
  • Events
  • Subscribe
Contact
  • Careers
  • Internships
  • Privacy Policy

10045 Red Run Blvd., Suite 250
Owings Mills, MD 21117
(410) 356-5900 | (800) 333-0272

19833 Leitersburg Pike, Suite 2
Hagerstown, MD 21742
(301) 739-9000

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