Insights

Longstanding Trust A well-established mid-sized accounting firm serving a diverse client base since the 1940s in Massachusetts and New England. This longevity suggests stability and potential openness to strategic advisory services beyond traditional accounting, such as risk management, process optimization, and tax planning for growth-focused clients.

Diverse Clientele Serves privately held businesses, non-profits, high-net-worth individuals, and publicly traded companies. This mix creates cross-sell opportunities across audit, assurance, tax, and specialized services tailored to different regulatory and reporting needs.

Tech Enablement Utilizes a modern tech stack including AWS, WordPress, analytics and security tools. This indicates a receptive environment for cloud-based accounting solutions, data analytics, and cybersecurity offerings that align with client risk management and efficiency goals.

Growth Readiness Revenue in the range of one to ten million and a 11-50 employee footprint suggest capacity for scalable advisory services, outsourced CFO, and process improvement engagements as clients scale operations or face regulatory changes.

Professional Alignment Membership in AICPA and Employee Benefit Plan Audit Quality Center signals emphasis on quality, regulatory compliance, and possibly retirement/employee benefit plan audits. There are opportunities to propose enhanced audit services, risk assessments, and benefit plan consulting to expand engagement hours with existing clients.

Similar companies to O'Brien Riley and Ryan CPA

O'Brien Riley and Ryan CPA Tech Stack

O'Brien Riley and Ryan CPA uses 8 technology products and services including Matomo, iCIMS, Amazon Web Services, and more. Explore O'Brien Riley and Ryan CPA's tech stack below.

O'Brien Riley and Ryan CPA's Email Address Formats

O'Brien Riley and Ryan CPA uses at least 3 email formats:
O'Brien Riley and Ryan CPA Email FormatsExamplePercentage
FLast@orrpc.comJDoe@orrpc.com
88%
First@orrpc.comJohn@orrpc.com
6%
First.Last@orrpc.comJohn.Doe@orrpc.com
6%

Frequently Asked Questions

What is O'Brien Riley and Ryan CPA's phone number?

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You can contact O'Brien Riley and Ryan CPA'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 Riley and Ryan CPA's official website and social media links?

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O'Brien Riley and Ryan CPA's official website is orrpc.com and has social profiles on LinkedIn.

How much revenue does O'Brien Riley and Ryan CPA generate?

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As of November 2026, O'Brien Riley and Ryan CPA's annual revenue is estimated to be $1M - $10M.

What is O'Brien Riley and Ryan CPA's SIC code and NAICS code?

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O'Brien Riley and Ryan CPA's SIC code is 8721 - Accounting, Auditing, and Bookkeeping Services and NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does O'Brien Riley and Ryan CPA have currently?

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As of November 2026, O'Brien Riley and Ryan CPA has approximately 17 employees across 1 continents, including North America. Key team members include Partner: S. O. B. Explore O'Brien Riley and Ryan CPA's employee directory with LeadIQ.

What industry does O'Brien Riley and Ryan CPA belong to?

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O'Brien Riley and Ryan CPA operates in the Accounting industry.

What technology does O'Brien Riley and Ryan CPA use?

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O'Brien Riley and Ryan CPA's tech stack includes Matomo, iCIMS, Amazon Web Services, Sucuri, WordPress, CookieYes, Mailchimp and Mimecast.

What is O'Brien Riley and Ryan CPA's email format?

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O'Brien Riley and Ryan CPA's email format typically follows the pattern of FLast@orrpc.com. Find more O'Brien Riley and Ryan CPA email formats with LeadIQ.
O'Brien Riley and Ryan CPA logo

O'Brien Riley and Ryan CPA

AccountingMassachusetts, United States11-50 Employees

O’Brien, Riley, and Ryan, P.C. is an accounting firm based in Braintree, Massachusetts, that has been serving clients in the New England region since the mid-1940s. Its client base includes privately held businesses, non-profit organizations, high-net-worth individuals, and publicly traded companies. The firm emphasizes meeting reporting deadlines while providing proactive insight intended to help clients achieve objectives and minimize risk.

It adapts its services to each client’s needs, ranging from full outsourcing to testing and providing opinions on in-house financial statements. The company maintains professional credentials through membership in the American Institute of Certified Public Accountants and the Employee Benefit Plan Audit Quality Center.

Section iconCompany Overview

Phone number
Website
orrpc.com
SIC Code
8721 - Accounting, Auditing, and Bookkeeping Services
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Employees
11-50

Section iconFunding & Financials

  • $1M - $10M

    O'Brien Riley and Ryan CPA's revenue is estimated to be in the range of $1M - $10M

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