What is O'Brien Hatfield, PA's NAICS code?

O'Brien Hatfield, PA's NAICS code is 54111 (Offices of Lawyers).

O'Brien Hatfield, PA Tech Stack

O'Brien Hatfield, PA uses 8 technology products and services including ClickCease, Facebook Pixel, Cloudflare Web Optimizations, and more. Explore O'Brien Hatfield, PA's tech stack below.

ClickCease

Ad Verification And Optimization

Facebook Pixel

Analytics

Cloudflare Web Optimizations

Analytics

iCIMS

Applicant Tracking Systems

Drupal Multisite

Web Hosting

WordPress Multisite

Web Hosting

Ninja Forms

Web Platform Extensions

Facebook

Widgets

O'Brien Hatfield, PA Email Formats	Example	Percentage
First.Last@markjobrien.com	John.Doe@markjobrien.com	67%
FirstLast@markjobrien.com	JohnDoe@markjobrien.com	33%

O'Brien Hatfield, PA Email Formats

Example

Percentage

First.Last@markjobrien.com

John.Doe@markjobrien.com

67%

FirstLast@markjobrien.com

JohnDoe@markjobrien.com

33%

Frequently Asked Questions

Where is O'Brien Hatfield, PA's headquarters located?

O'Brien Hatfield, PA's main headquarters is located at 511 West Bay Street Suite 330 Tampa, Florida 33606 United States. The company has employees across 1 continents, including North America.

What is O'Brien Hatfield, PA's phone number?

You can contact O'Brien Hatfield, PA's main corporate office by phone at

+1-813-390-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is O'Brien Hatfield, PA's official website and social media links?

O'Brien Hatfield, PA's official website is markjobrien.com and has social profiles on LinkedIn.

What is O'Brien Hatfield, PA's SIC code NAICS code?

O'Brien Hatfield, PA's SIC code is 8111 - Legal Services NAICS code is 54111 - Offices of Lawyers.

How many employees does O'Brien Hatfield, PA have currently?

As of June 2026, O'Brien Hatfield, PA has approximately 7 employees across 1 continents, including North America. Key team members include Partner: M. K.Vice President: J. H.Certified Paralegal: K. R.. Explore O'Brien Hatfield, PA's employee directory with LeadIQ.

What industry does O'Brien Hatfield, PA belong to?

O'Brien Hatfield, PA operates in the Law Practice industry.

What technology does O'Brien Hatfield, PA use?

O'Brien Hatfield, PA's tech stack includes ClickCeaseFacebook PixelCloudflare Web OptimizationsiCIMSDrupal MultisiteWordPress MultisiteNinja FormsFacebook.

What is O'Brien Hatfield, PA's email format?

O'Brien Hatfield, PA's email format typically follows the pattern of First.Last@markjobrien.com. Find more O'Brien Hatfield, PA email formats with LeadIQ.

When was O'Brien Hatfield, PA founded?

O'Brien Hatfield, PA was founded in 2002.

O'Brien Hatfield, PA

Q: What is O'Brien Hatfield, PA's official website and social media links?

O'Brien Hatfield, PA's official website is markjobrien.com. O'Brien Hatfield, PA has social profiles on LinkedIn.

Q: How many employees does O'Brien Hatfield, PA have currently?

O'Brien Hatfield, PA has approximately 7 employees.

Q: What technology does O'Brien Hatfield, PA use?

O'Brien Hatfield, PA's tech stack includes Datadog, Priority Hints, Google Analytics, SiteCatalyst, OptiMonk.

Law PracticeFlorida, United States2-10 Employees

O'Brien Hatfield, P.A. is a small Tampa-based criminal defense law firm that represents individuals and businesses facing federal and select state charges across Florida and beyond. The firm concentrates on complex matters, including federal and state white-collar crimes, drug trafficking, and fraud, handling both trial and post-conviction proceedings. It is led by Mark J. O'Brien, Esq., a former prosecutor in Miami, whose experience informs its approach to defense. Clients are drawn from across Florida and nationally who require aggressive, skilled defense against serious charges. The practice emphasizes both trial work and appellate and post-conviction motions to pursue comprehensive defense strategies.

Insights

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