Contact Us

The Interdisciplinary Council on Development & Learning

Corporate Mailing Address

4938 Hampden Lane, Suite 800

Bethesda, MD 20814

Corporate Office

6701 Democracy Blvd, Suite 300

Bethesda, Maryland 20817

(Please do not send mail to this address.)

ICDL Main Phone Number


For more information about ICDL please contact us:

ICDL Therapy & Training Center

ICDL's Flagship International DIR Floortime Therapy Center

5 Regent Street, Suite 508

Livingston, NJ 07039 USA

Therapy Center Phone: 973-797-9680

For any media or public relations communications, please contact our Public Relations office at

Suggestions, Compliments, and/or Complaints

We welcome your suggestions and want to try to resolve any complaints you might have. We invite to discuss your suggestion or complaint with any available member of the ICDL faculty or staff. You can also always contact ICDL’s CEO, Jeff Guenzel at

Sample Invoice Template to Submit to ICDL

IRS Blank W-9 Form

Federal Tax ID No. 52-1724162