Insights

Specialized Tax Expertise EllisPenn & O'Connor's reputation as the nation’s top IRS and state tax specialist positions them uniquely for collaborations with accounting firms, financial advisory services, and corporations seeking premium tax resolution support.

Niche Market Focus With a strong focus on tax resolution and government relations, the company offers targeted services ideal for businesses and organizations facing complex tax issues, creating opportunities for tailored software solutions and consulting services.

Technology Integration Use of common web and communication tools like WordPress, PHP, and Google Workspace suggests openness to technology upgrades, supporting up-sell opportunities for cybersecurity, workflow automation, or advanced client management solutions.

Growth Potential Revenue between 10 to 25 million with a small team indicates significant operational efficiency and growth potential, making them receptive to scalable solutions such as legal tech platforms or process optimization tools.

Industry Collaborations Memberships in professional associations like NATP, NAEA, and the Pennsylvania Bar highlight strategic partnerships and possibly influential industry networks, which can facilitate referral programs or joint service offerings.

Similar companies to Ellis Penn & O'Connor

Ellis Penn & O'Connor Tech Stack

Ellis Penn & O'Connor uses 8 technology products and services including WordPress, Open Graph, Google Workspace, and more. Explore Ellis Penn & O'Connor's tech stack below.

  • WordPress
    Content Management System
  • Open Graph
    Content Management System
  • Google Workspace
    Email
  • Clipboard.js
    Javascript Libraries
  • PHP
    Programming Languages
  • Creativ.eMail
    Web Platform Extensions
  • Apache
    Web Servers
  • Apache HTTP Server
    Web Servers

Media & News

Ellis Penn & O'Connor's Email Address Formats

Ellis Penn & O'Connor uses at least 1 format(s):
Ellis Penn & O'Connor Email FormatsExamplePercentage
First@ellispenn.comJohn@ellispenn.com
82%
Last@ellispenn.comDoe@ellispenn.com
18%

Frequently Asked Questions

Where is Ellis Penn & O'Connor's headquarters located?

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Ellis Penn & O'Connor's main headquarters is located at 1518 Walnut Street Philadelphia, Pennsylvania 19104 United States. The company has employees across 1 continents, including North America.

What is Ellis Penn & O'Connor's official website and social media links?

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Ellis Penn & O'Connor's official website is ellispenn.com and has social profiles on LinkedIn.

What is Ellis Penn & O'Connor's NAICS code?

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Ellis Penn & O'Connor's NAICS code is 5411 - Legal Services.

How many employees does Ellis Penn & O'Connor have currently?

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As of December 2025, Ellis Penn & O'Connor has approximately 11 employees across 1 continents, including North America. Key team members include Managing Partner: D. M.Associate: D. T.: E. P.. Explore Ellis Penn & O'Connor's employee directory with LeadIQ.

What industry does Ellis Penn & O'Connor belong to?

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Ellis Penn & O'Connor operates in the Legal Services industry.

What technology does Ellis Penn & O'Connor use?

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Ellis Penn & O'Connor's tech stack includes WordPressOpen GraphGoogle WorkspaceClipboard.jsPHPCreativ.eMailApacheApache HTTP Server.

What is Ellis Penn & O'Connor's email format?

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Ellis Penn & O'Connor's email format typically follows the pattern of First@ellispenn.com. Find more Ellis Penn & O'Connor email formats with LeadIQ.

Ellis Penn & O'Connor

Legal ServicesPennsylvania, United States11-50 Employees

EllisPenn & O'Connor, Inc. The Nation’s Top IRS and State Tax Specialist. We are Members of the National Association of Tax Professionals (NATP), Pennsylvania Bar Association, and the National Association of Enrolled Agents (NAEA). We are the only National Tax Resolution Firm with a State Tax Department with highly trained professionals!

Section iconCompany Overview

Headquarters
1518 Walnut Street Philadelphia, Pennsylvania 19104 United States
NAICS Code
5411 - Legal Services
Employees
11-50

Section iconMedia & News

Section iconFunding & Financials

  • $10M$25M

    Ellis Penn & O'Connor's revenue is estimated to be in the range of $10M$25M

Section iconFunding & Financials

  • $10M$25M

    Ellis Penn & O'Connor's revenue is estimated to be in the range of $10M$25M

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