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9th Lobby

Ninth District Headquarters Office - Hawthorne, NY


2022 Ninth District President

Dr. Stephen Ossen

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Office Safety Marketing Toolkit

A members-only, customizable marketing toolkit complete with videos, graphics and accompanying captions for use across social & more!

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ADA Encourages Vaccine


ADA strongly encourages COVID-19 vaccination among dental professionals

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Welcome to the Ninth District Dental Association

The Ninth District Dental Society was formed in 1909 and renamed to the Ninth District Dental Association in 2002. We have a membership of over 1500 dentists in 5 counties: Westchester, Rockland, Dutchess, Orange and Putnam.

In its quest to serve both the public and the profession, the Ninth District embodies the highest ideals.

The mission of the 9th District Dental Association is to serve and support its members and the public by improving the oral health of our community through Advocacy, Continuing Education and Camaraderie.

Latest News Around the Tripartite

Around the Ninth District

Southern Westchester Dental Forum

  • Tue, Feb 08, 2022 | 7:00 PM - Tue, Feb 08, 2022 | 10:00 PM
  • Location: ZOOM Teleconference
  • Contact: Dr. Matthew Paonessa
  • Email:
  • Phone: 914-873-0045

"A Review of Laws Applicable to Dental-Practice-Qualified Retirement Plans - Strategies for Avoiding Possible Discrimination"
Andrew E. Roth, Esq.
Partner - Danziger & Markhoff, LLP

The coronavirus pandemic is presenting new and unique challengers that many of us have never faced.  Qualified retirement plans are no exception.  This presentation showcases the ways dental practice owners can ameliorate the challenges presented by the current environment.

Specifically, topics covered will include:
     Types of qualified retirement plans
     CARES Act, SECURE Act and regulatory updates
     2022 Contribution limits:
          What is the maximum amount that can be contributed on an owner's behalf?
     Limiting staff costs:
          Coordinating 401(k) plans and profit-sharing plans as a strategy to reduce staff                costs
     Timing for 401(k) contribution deposits
     Average Deferral Percentage Test
     Pros and cons of Roth 401(k)s
     Cash balance plans

          State-of-the-art defined benefit plans which will enable owners to substantially                increase their contributions.
     Traditional defined benefit plans
          Prior service design
          Accumulation design
     Coordinating plan design with the Section 199A QBI deduction