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Pharmaceutical companies headquartered in Illinois

Tamtam tracks 29 pharmaceutical companies headquartered in Illinois. This list ranks all of them by number of employees on LinkedIn, led by Abbott, AbbVie and GE HealthCare. Their median headcount is 1,111. Half of them were founded in 2004 or later. The most common headquarters are Chicago (6), Deerfield (2) and Lake Forest (2).

馃嚭馃嚫 Illinois29 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
Abbottabbott.com

A global healthcare leader offering life-changing technologies in diagnostics, medical devices, nutrition, and generic medicines, with over 115,000 colleagues serving in 160+ countries

Hospitals and Health Care 馃嚭馃嚫 Abbott Park 140,778 n/a
2
AbbVieabbvie.com

Global biopharmaceutical company focused on creating impactful medicines for complex health issues in immunology, oncology, neuroscience, eye care, aesthetics, and other unmet needs

Pharmaceutical Manufacturing 馃嚭馃嚫 North Chicago 61,015 n/a
3
GE HealthCaregehealthcare.com

Global medical technology and digital solutions innovator leveraging intelligent devices, data analytics, and artificial intelligence to drive precision health and improve patient outcomes worldwide

Hospitals and Health Care 馃嚭馃嚫 Chicago 60,041 1892
4
Baxter International Inc.baxter.com

Development and delivery of innovative medical technologies and solutions to support clinicians and improve patient health worldwide.

Medical Equipment Manufacturing 馃嚭馃嚫 Deerfield 39,170 n/a
5
EVERSANAeversana.com

Provider of global services to the life sciences industry, focusing on the patient experience and delivering value throughout the product life cycle Serving 650+ organizations

Pharmaceutical Manufacturing 馃嚭馃嚫 Chicago 4,836 2018
6
Hospirahospira.com

This company, now part of Pfizer Inc, focuses on providing more information through their LinkedIn account

Pharmaceutical Manufacturing 馃嚭馃嚫 Lake Forest 4,102 2004
7
BioLife Plasma Servicesbiolifeplasma.com

The company focuses on improving the lives of patients with rare diseases through donor support, career growth opportunities, and comprehensive benefits in a friendly environment

Pharmaceutical Manufacturing 馃嚭馃嚫 Bannockburn 4,006 n/a
8
Hollister Incorporatedhollister.com

develops, manufactures, and markets healthcare products and services globally, aiming to make life more rewarding and dignified for users through dignity, integrity, service, and stewardship.

Medical Equipment Manufacturing 馃嚭馃嚫 Libertyville 3,755 1921
9
Tempus AItempus.com

Utilizing AI and data analytics, the company empowers physicians to personalize patient care with real-time insights and targeted therapies

Biotechnology Research 馃嚭馃嚫 Chicago 3,051 2015
10
Fresenius Kabi USAfresenius-kabi.com

A global healthcare company specializing in Pharma, Nutrition, MedTech, and BioPharma products for critical and chronic conditions worldwide

Pharmaceutical Manufacturing 馃嚭馃嚫 Lake Zurich 1,759 n/a
11
Alere Inc.globalpointofcare.abbott

A global healthcare leader offering life-changing technologies in diagnostics, medical devices, nutritionals, and branded generic medicines with a presence in over 160 countries

Medical Equipment Manufacturing 馃嚭馃嚫 North Chicago 1,757 1981
12
Advanced Groupadvancedgroup.com

Specializing in talent acquisition, outsourcing, and professional services, we provide strategic resourcing, staffing, consulting, and recruitment process outsourcing to various industries

Staffing and Recruiting 馃嚭馃嚫 Chicago 1,414 n/a
13
Sysmex America, Inc.sysmex.com

Distributes and supports automated in vitro diagnostic hematology, flow cytometry, coagulation, and urinalysis analyzers, reagents, and information systems for laboratories.

Medical Equipment Manufacturing 馃嚭馃嚫 Lincolnshire 1,361 n/a
14
Advanced Clinicaladvancedclinical.com

clinical development and strategic resourcing organization improving clinical research experiences and outcomes through customized solutions and experienced guidance

Biotechnology Research 馃嚭馃嚫 Deerfield 1,118 n/a
15
Sterigenicssterigenics.com

Global leader in comprehensive sterilization services for medical device, pharmaceutical, and food safety industries, ensuring safety of patients worldwide through various sterilization technologies

Medical Equipment Manufacturing 馃嚭馃嚫 Oak Brook 1,111 n/a
16
Fenwal, Inc., a Fresenius Kabi Companyfresenius-kabi.com

Specializes in blood transfusion technologies, supporting safe and effective blood collection, separation, storage, and cell therapy treatments worldwide.

Medical Equipment Manufacturing 馃嚭馃嚫 Lake Zurich 1,027 n/a
17
Stryker Sagestryker.com

A leader in prevention, developing innovative solutions to improve patient outcomes and caregiver efficiency by addressing never-events and hospital-acquired conditions in healthcare facilities

Medical Equipment Manufacturing 馃嚭馃嚫 Cary 805 1971
18
HuFriedyGrouphufriedygroup.com

Manufacturing dental instruments and infection prevention products, helping dental professionals achieve superior clinical outcomes and safety for patients.

Medical Equipment Manufacturing 馃嚭馃嚫 Chicago 780 n/a
19
Akorn Pharmaceuticalsakorn.com

Develops, manufactures, and markets prescription, consumer health, and animal health products, including ophthalmics, injectables, and oral liquids.

Pharmaceutical Manufacturing 馃嚭馃嚫 Lake Forest 704 1948
20
TAKEDA PHARMACEUTICALS AMERICA, INC.takeda.com

Takeda Pharmaceuticals America, Inc is a pharmaceutical company that focuses on developing and providing innovative healthcare solutions and treatments

Pharmaceutical Manufacturing 馃嚭馃嚫 Lincolnshire 636 1781
21
Avalign Technologiesavalign.com

A premier supplier of surgical implants, instruments, and delivery systems with a commitment to excellence, integrity, innovation, and investing in its diverse team for growth and success

Medical Equipment Manufacturing 馃嚭馃嚫 Rosemont 549 2005
22
Vyaire Medicalvyaire.com

Respiratory diagnostics division develops, provides, and supports market-leading pulmonary function and cardio-pulmonary exercise testing diagnostic hardware, consumables, and services globally.

Medical Equipment Manufacturing 馃嚭馃嚫 Mettawa 536 2024
23
Young Innovationsyounginnovations.com

A global manufacturer and distributor of dental supplies and equipment, focused on delivering innovative products to clinicians and patients

Medical Equipment Manufacturing 馃嚭馃嚫 Algonquin 501 1900
24
Flexan, An Ingersoll Rand Businessflexan.com

A global leader in custom medical device manufacturing, specializing in molding, extrusion, assembly, and packaging Committed to excellence, quality, and innovation

Medical Equipment Manufacturing 馃嚭馃嚫 Lincolnshire 194 1946
25
HRA Pharmahra-pharma.com

Develops accessible self-care solutions, focusing on women's health and compromised skin. Expands globally with innovative products and services, including Rx-to-OTC switches.

Pharmaceutical Manufacturing 馃嚭馃嚫 Chatillon 120 n/a
26
GC Orthodontics Americagcorthodontics.eu

A leader in the dental industry, offering a wide range of high-quality dental products and orthodontic solutions, dedicated to improving oral health globally

Medical Equipment Manufacturing 馃嚭馃嚫 Alsip 36 n/a
27
EdgeOne Medicaledgeonemedical.com

Provider of product development support for medical devices and combination products, partnering with companies of all sizes and governed by ISO 13485 quality system

Biotechnology Research 馃嚭馃嚫 Wheeling 32 2012
28
Clariance Spineclariance-spine.com

Spinal device company focused on designing, manufacturing and marketing innovative solutions for treating spinal disorders, with a focus on fusion devices and minimally invasive surgery

Medical Equipment Manufacturing 馃嚭馃嚫 Chicago 30 2007
29
GCDL/Golden Ceramic Dental Labgcdl.net

Full-service dental lab offering state-of-the-art dental products and services including implants, removables, orthodontics, clear aligners, and sleep solutions

Medical Equipment Manufacturing 馃嚭馃嚫 Prospect Heights 20 2004

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 24, 2026.

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