Insights

Niche Focus Target white collar and federal/state criminal defense opportunities for organizations, individuals, and executives facing complex charges, highlighting the firm’s specialized capabilities in high-stakes cases across Florida and nationwide.

Expansion Readiness Leverage the firm’s stated geographic reach and federal/state appellate services to explore partnerships with related services (forensic accounting, private investigations, international correspondents) and referrals for cross-border or multi-jurisdictional defenses.

Digital Presence Capitalize on a modern tech stack and online visibility to engage prospects with targeted content, case result testimonials, and authority signals in white collar and drug trafficking defense via digital channels.

Growth Potential Benefit from a small but billing-rich firm profile to scale through strategic alliances, co-counsel arrangements, and client intake enhancements that convert high-value inquiries into matter openings.

Competitive Positioning Differentiate from larger firms by emphasizing prosecutor-background leadership, personalized defense, and rapid response for federal and state charges, appealing to clients seeking agile, experienced defense counsel.

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O'Brien Hatfield, PA Tech Stack

O'Brien Hatfield, PA uses 8 technology products and services including Microsoft Advertising, iCIMS, WordPress, and more. Explore O'Brien Hatfield, PA's tech stack below.

O'Brien Hatfield, PA's Email Address Formats

O'Brien Hatfield, PA uses at least 2 email formats:
O'Brien Hatfield, PA Email FormatsExamplePercentage
First.Last@markjobrien.comJohn.Doe@markjobrien.com
67%
FirstLast@markjobrien.comJohnDoe@markjobrien.com
33%

Frequently Asked Questions

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

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

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

How much revenue does O'Brien Hatfield, PA generate?

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As of September 2026, O'Brien Hatfield, PA's annual revenue is estimated to be $1M - $10M.

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

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

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

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As of September 2026, O'Brien Hatfield, PA has approximately 9 employees across 1 continents, including North America. Key team members include Vice President: J. H., Certified Paralegal: K. R. and Criminal Defense Attorney: O. G. Explore O'Brien Hatfield, PA's employee directory with LeadIQ.

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

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

What technology does O'Brien Hatfield, PA use?

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O'Brien Hatfield, PA's tech stack includes Microsoft Advertising, iCIMS, WordPress, Microsoft 365, WP Engine, Datadog, Piwik PRO Core and Drupal Multisite.

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

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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?

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O'Brien Hatfield, PA was founded in 2002.
O'Brien Hatfield, PA logo

O'Brien Hatfield, PA

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.

Section iconCompany Overview

Phone number
SIC Code
8111 - Legal Services
NAICS Code
54111 - Offices of Lawyers
Founded
2002
Employees
2-10

Section iconFunding & Financials

  • $1M - $10M

    O'Brien Hatfield, PA's revenue is estimated to be in the range of $1M - $10M

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