We provide the key to unlock the worth of your business.  
  Certified Fraud Examiners on staff.  
  Discover whether you have proper safeguards in place.  
 
Our members specialize in those services which you need to successfully run your business and accumulate and manage personal wealth.

Firm Members:

Roseanne Andersen
Sherwin A. Brook
Gordon M. Johnson
Howard Leon
Charles J. Natarelli
David Weinberg
Sheldon Weiner
 
Elwood Kreger
Donald E. Rattner
Allen D. Sered
 

Rosanne Andersen, CPA
Member of the Firm
randersen@brookweiner.com
312-205-3246
Responsibilities
Rosanne provides professional services in accounting, related tax services, tax planning, retirement plans, and trusts for clients. She works with both individuals and closely held businesses.
Experience
Rosanne is originally from Singapore and came to this country at the age of 23. After obtaining her degree, she began her career with BrookWeiner, starting as a junior accountant. She became a Member of the Firm in 2004.
Education and Professional Activities
  • Member of the American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Member of the Chicago Estate Planning Council
  • Bachelor of Business Administration, University of Iowa
  • Business Round Table and Financial Wellness Committees, Women's Initiative of Itasca Bank and Trust
  • Treasurer (1998-2005), Family in Faith Lutheran Church, Glendale Heights
Sherwin A. Brook, CPA
Member of the Firm
sherwin@brookweiner.com
312-205-3226
Responsibilities
Sherwin provides tax, business consulting, risk assessment and legal support services for numerous corporate and individual clients. He represents clients in the financial services, real estate, and professional services industries. Mr. Brook has acted as special advisor to legal counsel on numerous matters.
Experience
Sherwin has over 30 years of experience in public accounting. His career includes five years in the Financial Services Audit Division of Arthur Andersen & Co. and two years with Touche Ross & Co. (now Deloitte Touche). He then partnered with a friend, Sheldon Weiner, and formed the firm of Weiner & Brook, eventually merging it into the firm that is now BrookWeiner. Through the years, Sherwin has successfully handled and resolved accounting issues and provided professional advice for a broad spectrum of clients.
Education and Professional Activities
  • Member of the American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Bachelor of Science, Northern Illinois University
  • Post-graduate studies, Northwestern University
  • Member of the Mid-Size Practice Committee for the Illinois CPA Society
Gordon M. Johnson, CPA
Member of the Firm
gjohnson@brookweiner.com
312-205-3240
Responsibilities
Gordon specializes in tax consulting for closely held businesses and individuals and in estate planning. He also provides counsel regarding taxation of real estate, banking, and financial institutions.
Experience
Gordon has over 20 years of experience in public accounting, always working with clients who need help with tax planning and taxation issues. He was employed by BrookWeiner immediately after college graduation, and became a Member of the Firm in 1996.
Education and Professional Activities
  • Member of the American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Bachelor of Science, DePaul University
  • Master of Science in Tax, DePaul University
Howard Leon, CPA
Member of the Firm
hleon@brookweiner.com
312-205-3234
Responsibilities
Howard provides tax, accounting, and auditing services for a broad cross-section of clients. His client base includes individuals, investment companies, medical practices, trusts, and family offices. His client base is weighted heavily in tax and real estate.
Experience
Howard has over 40 years of experience in public accounting. He has been a Member of the Firm since 1993.
Education and Professional Activities
  • Member of the American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Member of Chicago Estate Planning Council
  • Bachelor of Science and Commerce, DePaul University
  • Director of Education for the Firm
Charles J. Natarelli, CPA
Member of the Firm
cnatarelli@brookweiner.com
312-205-3205
Responsibilities
Charles provides an impressive array of experience in the following areas: audit, review and compilation services, financing assistance, mergers and acquisitions, income tax preparation and consultation, purchase investigations and due diligence services. Charles specializes in estate and gift tax planning, litigation services; particularly fraud investigations, contract disputes, and business valuations.
Experience
Charles has over 35 years experience in the accounting profession, and has recently become part of the BrookWeiner LLC family. Upon graduation from DePaul University he started working for Arthur Andersen & Co. as a staff accountant. A couple of years later he became a manager with two smaller firms in the Chicago area. In 1982, Charles started a very successful private practice firm, Natarelli & Associates. In January 2008, he decided to bring his vast wealth of knowledge and experience as a member of BrookWeiner LLC.
Education and Professional Activities
  • Batchelor of Science, DePaul University
  • Member of the American Institute of Certified Public Accountants
  • Member of American Institute of CPA’s Tax Division
  • Member of Institute of Business Appraisers
  • Member of Chicago Estate Planning Council
  • Member of Illinois CPA Society
  • Member of Illinois CPA Foundation – Business
    Valuation CEA Program
  • Certificate of achievement in Valuations and Investigative Accounting
  • Licensed member of National Association of Securities Dealers (NASD)
David Weinberg, CPA
Member of the Firm
dweinb@brookweiner.com
312-205-3237
Responsibilities
Dave specializes in accounting and tax services for individuals and closely held businesses (many in the service industry). He is also our resident expert on employee benefit programs, providing guidance to clients as well as our staff.
Experience
Dave has over 25 years of experience in public accounting at BrookWeiner, and is highly regarded in the area of taxation. He has been a Member of the Firm since 1984.
Education and Professional Activities
  • Member of the American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Bachelor of Arts, Knox College
  • Master of Accounting Science, University of Illinois
  • Instructor, Northwestern University School of Continuing Studies, CFP/Income Tax Planning (Ongoing)
Sheldon Weiner, CPA, CFE, CVA
Member of the Firm
sweiner@brookweiner.com
312-205-3227
Responsibilities
Shelly provides service and advice to a broad cross-section of clients. He specializes in audits, systems analysis, forensic accounting and fraud investigation, matrimonial litigation, and business valuation. Mr. Weiner often testifies as an expert witness for clients on these matters.
Experience
Shelly has over 30 years of experience in public accounting. He started his career with Peat Marwick & Mitchell (now KPMG), and then moved to Touche Ross & Co. (now DeLoitte Touche). He then partnered with a friend and formed the firm of Weiner & Brook, eventually merging it into the firm that is now BrookWeiner. Through the years, Shelly has been instrumental in opening new areas of practice for the firm.
Education and Professional Activities
  • Member of American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Member of the Florida Institute of CPAs
  • Member of the National Association of valuation Analysts
  • Certified Fraud Examiner
  • Certified valuation Analyst
  • Bachelor of Science and Business Administration, Roosevelt University
  • Licensed to practice in Illinois and Florida
Elwood Kreger, CPA
Member of the Firm
ekreger@brookweiner.com
312-205-3229
Responsibilities
Woody provides tax, accounting, and auditing service for closely held businesses, real estate ventures and individuals. He specializes in audits of condominium and townhome associations.
Experience
Woody has over 40 years of experience in public accounting. Upon graduation, Woody joined the firm of Ernst and Ernst (now Ernst & Young) as a junior accountant. He then moved to a smaller accounting firm, and joined BrookWeiner as a Member in 1980.
Education and Professional Activities
  • Member of the American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Bachelor of Science in Business Administration, Northwestern University
  • Director of Finance for the firm
Donald E. Rattner, CPA
Member of the Firm
drattner@brookweiner.com
312-205-3258
Responsibilities
Don provides service and professional advice to a broad cross-section of clients, including but not limited to individuals, non-profit corporations, real estate, investment trusts, and medical/dental practices. He provides auditing, accounting, tax service, and tax planning strategies as needed.
Experience
Don has over 35 years of experience in public accounting. He merged his successful firm of Rattner and Sandlow into BrookWeiner in 1995, and has kept much of his original client base. Don is also a Director and Chairman of the Audit Committee of a publicly-held company.
Education and Professional Activities
  • Member of the American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Bachelor of Science and Commerce, Roosevelt University
  • President, Board of Jewish Education of Metropolitan Chicago
Allen D. Sered, CPA
Member of the Firm
asered@brookweiner.com
312-205-3231
Responsibilities
Al provides service and professional advice to a broad cross-section of clients, including but not limited to individuals, closely held businesses, medical/dental practices, and trusts. He provides auditing, accounting, tax service, litigation support, and personal financial planning as needed.
Experience
Al has over 40 years of experience in public accounting. He was able to form his own small firm several years after graduation, and eventually moved his practice to a larger accounting firm, Pannell Kerr Forster. He joined BrookWeiner as a Member in 1988.
Education and Professional Activities
  • Member of the American Institute of Certified Public Accountants
  • Member of the Illinois CPA Society
  • Bachelor of Science, University of Illinois
 
 
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