What Quinn Johnston Henderson Pretorius & Cerulo does

Quinn Johnston Henderson Pretorius & Cerulo is a privately held regional law firm founded in 1945 and headquartered in Peoria, Illinois, with a second office in Springfield. The firm employs 24+ attorneys organized across 14 practice areas, with a portfolio split between litigation defense services (medical professional liability, workers' compensation, personal injury defense, commercial and business litigation, civil rights defense, labor and employment litigation, construction litigation, professional liability defense, trucking and transportation) and transactional/advisory services (business and transactions, estate planning and probate, family law, healthcare law, municipal law). The firm serves two primary customer segments: individual clients seeking personal legal representation, and corporate/institutional clients — including healthcare facilities, insurance companies, manufacturers, municipalities, and licensed professionals — for whom it provides litigation defense and business counsel.

The firm generates revenue through professional service fees structured on a quote-based, case-by-case basis, including hourly billing, fixed fees for defined engagements, and contingency arrangements in select litigation matters. Its go-to-market is sales-led and referral-driven, leveraging 80 years of brand equity in central Illinois, attorney peer recognition (American College of Trial Lawyers, Leading Lawyers, Super Lawyers), community involvement (pro bono service, bar association leadership), and educational channels such as the Business & Tax, Government & Liability, and Labor & Employment seminars and the Quinn Quarterly newsletter. There are no disclosed external investors, parent companies, M&A transactions, or funding events; ownership and governance are consistent with a traditional partner-owned law firm structure.

Operationally, the firm's technology stack consists of standard legal practice management and document management systems, with no proprietary technology products, patents, or AI/ML capabilities disclosed. Geographic scope is concentrated in the Midwest United States, with attorneys appearing before the U.S. District Courts for the Northern, Central, and Southern Districts of Illinois, Illinois state courts, and administrative agencies including the EEOC, IDHR, NLRB, and IWCC. Recent activity centers on lateral partner additions and internal partner promotions, suggesting a strategy of bench-building and incremental capacity expansion rather than geographic or inorganic growth.

Name

Quinn Johnston Henderson Pretorius & Cerulo

Legal name

Quinn Johnston

Website

https://quinnjohnston.com

Company type

Private

Founded year

1945

Operating status

Operating

Headcount range

101–250 employees

Short description

Quinn Johnston Henderson Pretorius & Cerulo is a Peoria, Illinois-based defense-side law firm founded in 1945 with 24+ attorneys across 14 practice areas, serving individual and corporate/institutional clients in healthcare, insurance, municipal, and transportation sectors throughout central Illinois.

Ownership category

akta.pro rank

Product category

Legal Services

NAICS

Offices of Lawyers (541110), Offices of Lawyers (54111), Legal Services (5411)

SIC

Services-Legal Services (8111)

akta.pro primary industry

Personal Injury & Insurance Defense (BPAHAAAM)

Keywords

• Legal defense services
• Medical malpractice defense
• Workers compensation defense
• Commercial litigation services
• Healthcare law representation

Headquarters

HQ city

Peoria

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations

Revenue model

1. Legal Services - Professional Fees: The firm generates revenue through professional legal services, including litigation defense, corporate representation, and transactional work. Services are provided to individual clients and corporate entities across various practice areas including healthcare law, medical malpractice defense, workers' compensation, products liability, personal injury defense, and commercial litigation. Revenue is derived from hourly billing, fixed fees for specific services, and potentially contingency arrangements in certain litigation matters.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Quinn Johnston Henderson Pretorius & Cerulo is a full-service law firm providing litigation defense and business counsel across 14 practice areas. The firm represents healthcare facilities, insurance companies, municipalities, corporations, and individuals in matters including medical malpractice defense, workers' compensation, products liability, personal injury defense, commercial litigation, labor and employment, healthcare law, municipal law, family law, and estate planning. Services are delivered through offices in Peoria and Springfield, Illinois, with attorneys appearing in U.S. District Courts and before agencies such as the EEOC, IDHR, NLRB, and IWCC.

Product overview

Quinn Johnston Henderson Pretorius & Cerulo is a law firm offering a comprehensive portfolio of legal services across multiple practice areas. The firm provides dedicated litigation and business counsel for individual and corporate clients, with particular emphasis on healthcare law, medical malpractice, workers' compensation, products liability, and personal injury defense, as well as commercial litigation and business law. The firm's service model encompasses 14 distinct practice areas organized into litigation defense services (Civil Rights Defense, Commercial and Business Litigation, Construction Litigation, Labor and Employment Litigation, Medical Professional Liability, Personal Injury Defense, Professional Liability Defense, Trucking and Transportation, Workers' Compensation Defense) and business transaction services (Business and Transactions, Estate Planning/Probate/Trusts, Family Law, Healthcare Law, Municipal Law). The firm operates offices in Peoria and Springfield, Illinois.

Differentiator

Problem solved

Functional benefit

Products and services

• Business and Transactions Practice

Quantifiable outcome

• High success rate in defending against medical negligence claims
• +2 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Scale indicators2 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Hinshaw & Culbertson: Chicago-based defense and insurance coverage firm with strong presence across Illinois in professional liability, medical malpractice, and labor & employment defense - the same core defense niches served by Quinn Johnston.
• SmithAmundsen LLC: Chicago-based full-service firm with concentrated labor & employment defense, healthcare, and commercial litigation practices that overlap with Quinn Johnston's Illinois defense offerings.
• Litchfield Cavo LLP: Chicago-headquartered national defense firm with strong professional liability, insurance defense, and commercial litigation practices, frequently appearing alongside Quinn Johnston on insurance panel work.
• HeplerBroom: St. Louis-based defense firm with significant Illinois practice in medical malpractice, products liability, and commercial litigation - directly competitive for the same insurance carrier panel work Quinn Johnston handles.
• Brown & James: Midwest regional defense litigation firm with overlapping practice in personal injury defense, professional liability, insurance defense, and workers' compensation, serving similar institutional clients.
• Heyl Royster Voelker & Allen: Peoria, Illinois-based defense litigation firm of comparable size with deep practice overlap in medical malpractice, workers' compensation, and civil rights defense. Closest geographic and practice-area analogue to Quinn Johnston.
• Howard & Howard Attorneys: Illinois-based business and litigation firm with overlapping niches in commercial litigation, labor & employment, and insurance-related defense counsel.
• Koley Jessen P.C. Omaha-based business law firm of comparable mid-market profile with litigation, labor & employment, and healthcare practices serving institutional clients across the Midwest.

Others

• Sikich LLP: National professional services firm offering accounting, advisory, and legal services across the Midwest; an adjacent rather than directly competitive peer sharing the same regional institutional client base.

Regional players

• Sandberg Phoenix & von Gontard: St. Louis-based defense firm with adjacent Midwestern footprint covering medical malpractice, products liability, and commercial litigation - competes for regional insurance carrier work but headquartered outside Illinois.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Quinn Johnston Henderson Pretorius & Cerulo