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9th Lobby

Ninth District Headquarters Office - Hawthorne, NY


2022 Ninth District President

Dr. Stephen Ossen

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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

Web & In-Person – “Cardio-Pulmonary Resuscitation with Defibrillator”

  • Mon, May 23, 2022 | 6:00 PM - Mon, May 23, 2022 | 7:22 PM
  • Location: Online & In-Person at 9th District Headquarters
  • Address: 364 Elwood Ave, Hawthorne, NY
  • Contact: Diane Darby
  • Email:
  • How to find us: On-Line Module must be complete prior to in-person session at HQ
  • Website:
  • Phone: 914-747-1199

 “Cardio-Pulmonary Resuscitation with Defibrillator”

American Heart Association


Beginning with the Thursday, March 10, 2022, CPR Course, all CPR Courses will remain both online and in-person, however, the in-person portion will be held at The Blythedale Children’s Hospital at 95 Bradhurst Avenue, Valhalla, NY  10595 – the Main Phone Number is:  914-592-7555.

When registering for a CPR course, you will register for the day of the in-person, skills assessment portion of the course at Blythedale.  Approximately one week prior, you will receive an email from the AHA consisting of the online portion of the program.  You MUST complete the online module, print out the certificate of completion at the end, and BRING that with you to the in-person session.  You will be assigned a specific ½ hour timeframe to arrive for the hands-on session.  Upon successful completion of the skills assessment, you will be provided access to your 2-year certification card (they’re now e-cards that you will download with the access provided).

  • There is free parking right outside the building.
  • Once you walk into the hospital lobby you will be screened by medical screeners (basically asked a few questions related to travel or symptoms and then have a temperature check by a temporal thermometer).
  • You will then go to security and let them know you are here for CPR.You will be directed into the board room, which is right off the lobby, behind the security desk.
  • A class size of 4 students will be a 30 min skills session, a class size of 6 students would be 45 mins. Social distancing will be maintained.
  • Everyone must wear a mask throughout the entire class.
  • Please note, although you are entering the hospital you will not be going past the lobby so there is no concern of patient exposure on the units or within the hospital.

Synopsis: BLS for healthcare providers.  Adult, child and infant CPR.  Conscious and unconscious choking.  Use of Automated External Defibrillator machine (AED). Use of breathing barrier devices.  New York State requires all dentists to maintain CPR certification.  This is a two-year certification.  This course meets this requirement.