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National Security Law Firm

4.9

About this business

Our attorneys specialize in security clearance appeals. They have dedicated their careers to learning the entire security clearance process from start to finish. They started by working for the federal government before entering private practice. 

Location details

1250 Connecticut Ave NW Suite 700, Washington, DC, 20036, United States

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WeekdayScheduleStatus
Mon8:00 a.m. to 5:00 p.m.
Tue8:00 a.m. to 5:00 p.m.
Wed8:00 a.m. to 5:00 p.m.
Thu8:00 a.m. to 5:00 p.m.
Fri8:00 a.m. to 5:00 p.m.
SatClosed
SunClosed
4.9244 reviews
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Wally Miranda's profile image
Wally Miranda 
on Google
5 days ago

I had an outstanding experience with National Security Law Firm (formerly Katherine O’Brien Law). They managed my legal matter with the utmost professionalism and care. From initial consultation to resolution, their thorough approach and clear communication kept me fully informed and significantly reduced the stress I was facing. What truly distinguished their service was their remarkable attention to detail. Every document, timeline, and step was handled meticulously, which gave me complete confidence in their process. It’... read more

E B's profile image
E B 
on Google
6 days ago

Excellent, prompt, and professional service. It’s a pleasure doing business with this law firm. I worked with Sabrin Najjar, who resolved my issues promptly. I would definitely recommend them to anyone. 

jamal gary's profile image
jamal gary 
on Google
a week ago

I would like to say thank you to the entire Katherine O’brian law firm for Expunging my record under the “Clean slate Act” Everyone was very professional and attentive to work that needed to be done. However, a very special Thank you goes to “ Sabrin Najjar” for going above and beyond for me. 

Charles Mccray's profile image
Charles Mccray 
on Google
a week ago

Carl and Cara are the most amazing team I've ever worked with. They are caring towards their clients, and tough where it matters most, with everyone else. They made me feel valued and didn't treat me like a client. They treated me like family. If needed, I will work with them again in a heartbeat. You will not be disappointed with the services you received and the results of their efforts. Carl and Cara will fight "tooth and nail" for you, all while maintaining a high moral standards and an unmatched work ethic. No matter th... read more

Ricardo Lopez's profile image
Ricardo Lopez 
on Google
2 weeks ago

Best decision I have ever made. Entire process to get my hazmat back was about 8 months from start to finish. National Security Law Firm did their part and with in the deadlines provided by them and the rest was on TSA taking a while. As a customer I would recommend you staying on top of your deadlines and submit what you are asked for on time. Thanks to everyone who helped me!!! 

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Frequently asked questions about National Security Law Firm

How is National Security Law Firm rated?

National Security Law Firm has a 4.9 star rating with 244 reviews. 

When is National Security Law Firm open?

National Security Law Firm is closed now. It will open on Monday at 8:00 a.m. 

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