David Rottkamp

David M. Rottkamp, CPA

Partner, Not-for-Profit Practice Leader

  • New York City
  • (212) 223-5046
David M. Rottkamp, CPA, is an Audit Partner, Not-for-Profit Practice Leader, and the Partner-in-Charge of New York City Office at Grassi & Co.  David has 30 years of experience providing audit and advisory services to the not-for-profit and health care industries.  David focuses on organizations serving individuals with special needs, religious organizations, educational institutions, membership associations, social service providers, healthcare providers, foundations, and the arts and culture world. David’s technical knowledge allows him to provide specific services, including OMB A-133/Uniform Guidance compliance audits and retirement plan audits.
Since beginning his career, David has advised some of the area’s most successful not-for-profit and health care organizations in areas such as: financial reporting systems, implementation of the new IRS Form 990 guidelines, internal control reviews, developing financial forecasts, and providing quality board education and governance advice. Through his focus on education and board awareness, he has improved the internal structure for many of his clients, demonstrating his industry leadership.
David is an active member of the New York State Society of CPAs (NYSSCPA), where he is Immediate Past Chair of the Not-for-Profit Committee and several of its subcommittees, including government funding sources and cost reporting updates.  David has also chaired the statewide Not-for-Profit Conference for the NYSSCPA for four years. David is the chair of a NYSSCPA subcommittee, working with the New York State Consolidated Fiscal Reporting Interagency Committee, collaborating with NYS officials on possible revisions to Appendix AA, “Audit Guidelines” of the CFR instructional manual and the instruction manual itself.
An authority in the industry, David has presented on a variety of topics relating to organizations funded by Federal and New York State governments, including government grants and contracts, Medicaid, Medicare and other third party insurance.  Other funding also includes private funding and contributions. David has conducted educational seminars for clients, accounting industry groups, and Not-for-Profit member organizations.  He has presented to the Financial Managers Association (FMA) for over 20 years, Interagency Council of Mental Retardation and Developmental Disabilities Agencies, Inc. (IAC), the New York State Society of CPAs Foundation for Accounting Education (FAE), and the New York Council of Nonprofits (NYCON) at their annual Camp Finance. David is also an adjunct professor at New York University (NYU) in Manhattan.
Within Grassi & Co., David leads internal education sessions, webinars and writes articles in the firm’s external newsletter relating to the not-for-profit and health care industries. David is also a member of the firms’ Accounting and Auditing Committee and the Strategic Partner Retreat committee, which plays a significant role in cultivating the firm’s culture and strategic objectives. 
To give back to the industry in which he serves, David is on the board of the National Multiple Sclerosis Society - Long Island Chapter, as past chairman along with several of its committees, including audit, finance, executive and compensation.  Beyond his local work, David is a member of the National Board of Directors of the National Multiple Sclerosis Society and is chair of National’s audit committee, having a unique and even broader impact on the organization’s well-being.  David is also the Chair of the board of directors of NYCON, a membership organization that services over 3,100 NFP members throughout New York State.  He is also a member of the American Institute of Certified Public Accountants (AICPA).

Grassi & Co. Introduces Grant Compliance Services to the Nonprofit Sector, Led by Elizabeth Gousse Ballotte

Due to a shift in the need for compliance for private foundations and other funders, Grassi & Co. is proud to announce that the Firm has added a Grant Compliance Services team to their NFP Practice.

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Grassi & Co.’s Not-For-Profit Practice Expands in NYC and Westchester County

Leading accounting, tax and advisory firm, Grassi & Co., announced today that the audit nonprofit partners and staff of Lyndhurst, NJ-based Lederer, Levine & Associates have joined the firm, effective January 1, 2019. 

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David M. Rottkamp, CPA, Grassi & Co,. is the Recipient of the 2018 Urbach Community Builders Award

David M. Rottkamp, CPA, Partner, NFP Practice Leader at Grassi & Co., is the 2018 recipient of the 15th annual Michael H. Urbach, CPA Community Builders Award. 

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David M. Rottkamp, Partner of Grassi & Co., Announced as New York Council of Nonprofits Board Chair

The New York Council of Nonprofits (NYCON), a statewide membership organization representing over 3,100 organizations, is pleased to announce the election of David M. Rottkamp, CPA, as incoming Board Chair for 2017.  David is the Audit Partner, Not-for-Profit Practice Leader and the Partner-In-Charge of the New York City Office of Grassi & Co., the 70th largest accounting firm in the U.S. specializing in accounting, auditing, tax, technology, and business consulting services.

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Mergers & Acquisitions for NFPs

The thought behind merging two companies together is to increase the value of each—the idea that two are better than one. Today’s not-for-profit sector is experiencing an unprecedented change which is moving many NFP organizations to consider merger and acquisition activity.

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EAlert: From the Mayor's Office of Contract Services

To strengthen the partnership between New York City and our human service nonprofit sector, we feature updates from The Mayor’s Office of Contract Services (MOCS).  MOCS oversees New York City procurement and works with City agencies, vendors and community-based organizations to ensure that the contracting process is fair, efficient, transparent and cost-effective.

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NYCON Camp Finance 2019 - Building Capacity in a Changing Landscape

Grassi & Co.'s Partner and NFP Practice Leader, David Rottkamp, will be discussing growth strategies and updates vital to your organization's survival.


HR and Financial Best Practices

Paycor, Grassi & Co., and Sentinel Benefits host this complimentary event.


NYNMedia NFP Boardcon

Grassi & Co's Partner and NFP Practice Leader, David M. Rottkamp, will be speaking on "Strengthening Governance Functions While Increasing Organization Effectiveness.




    BBA, Pace University 


    American Institute of Certified Public Accountants (AICPA)

    New York State Society of Certified Public Accountants (NYSSCPA)

    New York Council of Nonprofits, Inc. (NYCON), Board Chair, Board of Directors

    National Multiple Sclerosis Society, Long Island, Board Member

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