Callahan John is a Lawyers and Attorneys business in Washington, DC.
Callahan John is a company that has been operational since 0, offering products or services in the industry of Lawyers and Attorneys. For additional details of the nature of this business, it is registered under with the SIC code 8111 and under the NAICS code 5411100 ().
Callahan John now supports a growing employee population of 1 to 4 and the business makes an estimated annual revenue of $100.000 to $499.999. The company can be reached for inquiries about BOTH market variables and other concerns by contacting John Callahan by phone (202) 663-7387.
For added convenience and more information, Callahan John also has a website at , and can be accessed and followed through the social media outlets Twitter and Facebook . Visit Callahan John’s physical single location at 2100 Pennsylvania Avenue Nw, District of Columbia, District of Columbia or locate it via the coordinates 38.901295,-77.046745.