Hotel and Travel Information


ACOS has negotiated discounted room rates for 2017 Annual Clinical Assembly (ACA) delegates at our host hotel the Gaylord National Resort and Convention Center in National Harbor, Maryland. Reservations are available on a strictly first come, first served basis. We encourage all participants to reserve their hotel room now as space is limited and the hotel is sure to fill up quickly!

Gaylord National Resort and Convention Center

201 Waterfront Street, National Harbor, MD 20745
301-965-4000 | Website

Room Rate

Single/Double Occupancy $269/night + tax and daily resort fee.


Online Reservations: Please click on the link provided below or cut and paste this address into your web browser. This dedicated website is already pre-loaded with our group rates

Reservation Link:

Reservations by Phone: ACA registrants may contact the Marriott reservations line to book rooms. To ensure you are receiving the negotiated group rates, you must reference our full conference name.

Marriott Reservations:    877-491-0468
Please reference:          2017 Annual Clinical Assembly of Osteopathic Surgeons

Warning: The reservation methods listed on or communicated directly by the ACOS are the officially authorized methods of booking your room at the host hotel for the 2017 Annual Clinical Assembly of Osteopathic Surgeons. Please beware of fraudulent organizations offering rooms at a significant discount.  Attendees may be lured by highly attractive rates but could fall prey to imposters causing a loss of deposits, be charged hidden fees, or bait and switched to hotel rooms they never booked. Do not give them your credit card information. These companies are in no way affiliated with the Annual Clinical Assembly of Osteopathic Surgeons, the ACOS, the AOCPr or the Gaylord National Hotel and Convention Center in National Harbor, MD.


Registrants of the 2017 Annual Clinical Assembly are eligible for multiple travel discounts. We encourage all attendees to take advantage of these special deals provided exclusively for ACA registrants. 

United Airlines

Save up to 10% on your flights to/from Washington, DC, area airports for the 2017 ACA on United Airlines. To book your flights:

  • Visit or call 800-426-1122
  • Provide the following codes when booking:
          - Z Code: ZYY3
          - Agreement Code: 563728
Delta Airlines

Save up to 10% on your flights to/from Washington, D.C. area airports for the 2017 ACA by booking with Delta Airlines.

  • Meeting Group Code: NMQPD
  • Book online at Select “Book Your Flight” then enter your itinerary and the meeting code in the box provided and click “Find Flights” to see your discounted fares. Make reservations by phone by the Delta Meeting reservations at 800-328-1111 Mon-Fri 7am-7pm CDT. Please provide the Reservations Agent with the meeting group code.
2017 ACA attendees are eligible to receive special conference rates. Click here for more information about how to take advantage of this opportunity. 

Discounted car rental rates are available through Avis Rent a Car for attendees of the 2017 ACA. Avis Worldwide Discount code (AWD number): D594051. The AWD will be effective from seven days prior to the event until seven days after the event.
  • Online reservations at discounted rates can be made by booking online here. When this link is used, your AWD number will automatically be placed in the reservation detail.
  • For phone reservations at the best available rate, please call Avis at 800-331-1600 and provide the reservations agent with the official 2017 ACA Worldwide Discount code (AWD number): D594051.
Special Amtrak fares are available for 2017 ACA attendees. Amtrak offers a 10% discount off the best available rail fare to Washington, DC, October 08, 2017 – October 18, 2017).  To book your reservation call Amtrak at 1 (800) 872-7245 or contact your local travel agent.

Conventions cannot be booked via Internet.  Please be sure to refer to Convention Fare Code X39F-973 when making your reservation.  

This offer is not valid on the Auto Train and Acela Service.  Fare is valid on Amtrak Regional for all departures seven days a week, except for holiday blackouts.  Offer valid with Sleepers, Business Class or First-Class seats with payment of the full applicable accommodation charges.

Attendees intending on utilizing this discount should download the 2017 ACA Amtrak Convention Fare Discount Voucher by clicking here.

Super Shuttle
2017 ACA attendees will receive 10% off their reservation (exclusions apply). Please click here for full details on the available Super Shuttle discounted services.