Tenenbaum Law Group PLLC > Washington DC, United States > Firm Profile

Tenenbaum Law Group PLLC
1101 K Street, NW SUITE 700
United States

Tax > Not-for-profit (nonprofit and tax exempt organizations) Tier 3

Experienced managing partner and co-founder Jeffrey Tenenbaum is the ‘highly skillful, caring, and practical’ practice head leading the group at Tenenbaum Law Group PLLC in Washington DC. Tenenbaum, who is active in the nonprofit bar, is emblematic of the group’s ‘rich and deep understanding of the nonprofit and trade association ecosystem’, leveraged to act as outside general counsel for different types of clients such as charities, trade and professional associations, international NGOs, conservation groups, and educational and health care institutions, with Nisha Thakker, who co-founded the group, a key name for healthcare work.

Practice head(s):

Jeffrey Tenenbaum

Other key lawyers:

Nisha Thakker; Julie Kulovits


‘Jeffrey has years of experience in the non-profit space. Since starting his own practice, we have found him to be extremely responsive, as well as realistic.’

‘The group has a rich and deep understanding of the non-profit and trade association ecosystem and therefore has experience and understanding of any situation and issue that may arise for any particular organization. They are very responsive, respectful, genuine in their desire to do good for their clients. They have also responded very well to adapting to the changing office environments resulting from the pandemic.’

‘Jeffrey Tenenbaum is very knowledgeable, fastidious, and personable. He is able to drill down to the very heart of the issue and articulate it so that my board and other stakeholders understand any issue from all angles and the options before us. He has been a great resource for a number of items, whether it’s launching a new foundation, templates for bylaws, employment contracts, or affiliate partnerships, Jeff is a great resource to go to.’

‘Jeffrey Tenenbaum is exceptional. Highly skillful, caring, and practical.’

Key clients

AABC Commissioning Group

AACE international

Academy of Management



ACF Animal Rescue, USA

ADED: The Association for Driver Rehabilitation Specialists

Advanced Security Training Institute

Advanced Textiles Association

Afghan Peace Watch


AHRA: The Association for Medical Imaging Management

Air Conditioning Contractors of America

Air Force Association

Airport Consultants Council

Alliance for Automotive Innovation

Alliance for Regenerative Medicine

America’s Blood Centers

America’s Public Television Stations

American Academy of Anaesthesiologists Assistants

Work highlights

  • Assisted a large international NGO with strategic and compliance efforts related to its international governance.
  • Assisted America’s Public Television Stations (APTS) with drafting comprehensive lobbying and political campaign intervention guidance.

Tenenbaum Law Group PLLC is a nationally recognized, five-attorney boutique Washington, DC-based law firm specializing in the representation of nonprofit organizations and related entities across the United States. Serving primarily as outside general counsel, the firm advises charities, trade and professional associations, international NGOs, conservation groups, arts and cultural institutions, foundations, and other nonprofits – as well as companies and executives that work with or provide services to nonprofits – on the broad array of legal issues and challenges they face. The firm brings decades of Big Law experience to bear with small firm cost-efficiency, responsiveness, and turnaround time. With a focus on workable, impactful solutions, spirited defense and advocacy, a practical understanding of the broader nonprofit context, and attorneys who take their work – but not themselves – very seriously, TLG prides itself on partnering with its clients in a strategic manner to help ensure maximum effectiveness and results.

Managing Partner Jeff Tenenbaum is widely recognized as one of the nation’s most accomplished nonprofit legal practitioners, a top leader in the nonprofit bar, an accomplished author, lecturer, commentator, and expert witness on nonprofit legal matters, and a distinguished thought leader and active participant in the nonprofit legal community. Partner Nisha Thakker has spent most of her 16-year legal career in-house in the nonprofit legal world, bringing a unique, invaluable perspective to the practice. Counsel Susan Hamsher spent the majority of her 14-year legal career as an in-house attorney at The Nature Conservancy – one of the world’s largest charities – and most recently was a senior associate at a boutique Washington, DC law firm focused exclusively on the representation of nonprofit organizations. Counsel Holly Peterson served in-house at the National Association of College and University Attorneys for eight years before joining TLG and, prior to that, served for four years as a litigator in the Maryland Attorney General’s Office in its Educational Affairs Division. Jeff, Nisha, Susan, and Holly are all very active in the nonprofit legal community.

At TLG, we don’t just respond to legal questions, issues and challenges. Our lawyers think strategically with our clients to understand what their underlying goals and concerns are, develop creative solutions and options, talk through the pros and cons of various approaches, and help them make the best decisions for their organizations. Because of our combined decades of nonprofit law practice, we rarely have to reinvent the wheel, which not only provides for much more cost efficiency, but also enables us to take our advice and counsel to the next, deeper level.

We don’t tell our clients, “No, you can’t do that,” because that is almost never the case. With a nuanced understanding of the many complex laws and regulations that govern nonprofit organizations – in wide and diverse areas of law that often overlap and sometimes even work at cross-purposes – we are virtually always able to come up with workable alternatives and structures while helping our clients navigate the potential pitfalls. Our extensive experience in the nonprofit arena also enables us to never give legal advice in a vacuum, but rather to take into account the broader political, financial, business, and governance context, providing more wholistic legal counsel to our clients.

Our lawyers are volunteer leaders in the nonprofit community – with industry groups such as the American Society of Association Executives, American Bar Association, Council of Engineering and Scientific Society Executives, United Philanthropy Forum, FAR (Finance & Administration Roundtable), Greater Washington Society of CPAs, National Association of College and University Attorneys, and numerous state societies of association executives, among others – helping to further our deep connection to and with the sector. We have and continue to chair and serve on key nonprofit legal industry panels, and we are frequent speakers and authors on nonprofit legal topics, delivering over 50 presentations per year and publishing numerous articles per year on new developments and critical issues.

Our attorneys serve as a continual resource to others seeking nonprofit legal expertise – not only our clients, but to members of the print, television, radio, and online media, federal and state charity regulators, industry trade groups, academics, and nonprofit industry professionals in related fields, such as accounting, insurance, and consulting. Jeff Tenenbaum also serves as an expert witness on nonprofit legal matters.

While awards and honors don’t make great lawyers, over 16 years of annual recognition from all of the leading bestowers of such awards and honors is acknowledgment in which our attorneys take humble gratification.

Finally, we take the greatest pride in the long-term relationships we have built with our clients – some over 15-20 years in duration – as well as the continuous stream of referrals we receive from our clients, nonprofit executives, professionals who practice in the sector, and many others. That is the ultimate testament to the work we do.

Department Name Email Telephone
Managing Partner Jeffrey S. Tenenbaum jtenenbaum@TenenbaumLegal.com 202-221-8002
Partner Nisha G. Thakker nthakker@TenenbaumLegal.com 202-221-8004
Counsel Susan C. Hamsher shamsher@TenenbaumLegal.com 202-250-3632
Legal Administrative Assistant Ashley Norton anorton@TenenbaumLegal.com 202-221-8005
Senior Paralegal Courtney C. Tucker ctucker@TenenbaumLegal.com 202-250-3626
Counsel Holly Peterson hpeterson@TenenbaumLegal.com 202-221-8006
Photo Name Position Profile
Susan Hamsher photo Susan Hamsher Counsel
Holly Peterson photo Holly Peterson Counsel
Jeffrey Tenenbaum photo Jeffrey Tenenbaum Managing Partner
Nisha Thakker photo Nisha Thakker Partner
Managing Partner : 1
Partner : 1
Counsel : 2
Legal Administrative Assistant : 1
Paralegal : 1
American Bar Association
American Society of Association Executives
FAR (Formerly Finance & Administration Roundtable)
National Association of College and University Attorneys