| # | Company | Employees |
|---|---|---|
| 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 |
140,778 |
| 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 |
61,015 |
| 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 |
60,041 |
| 4 |
Baxter International Inc.baxter.com
Development and delivery of innovative medical technologies and solutions to support clinicians and improve patient health worldwide. |
39,170 |
| 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 |
4,836 |
| 6 |
Hospirahospira.com
This company, now part of Pfizer Inc, focuses on providing more information through their LinkedIn account |
4,102 |
| 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 |
4,006 |
| 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. |
3,755 |
| 9 |
Tempus AItempus.com
Utilizing AI and data analytics, the company empowers physicians to personalize patient care with real-time insights and targeted therapies |
3,051 |
| 10 |
Fresenius Kabi USAfresenius-kabi.com
A global healthcare company specializing in Pharma, Nutrition, MedTech, and BioPharma products for critical and chronic conditions worldwide |
1,759 |
| 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 |
1,757 |
| 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 |
1,414 |
| 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. |
1,361 |
| 14 |
Advanced Clinicaladvancedclinical.com
clinical development and strategic resourcing organization improving clinical research experiences and outcomes through customized solutions and experienced guidance |
1,118 |
| 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 |
1,111 |
| 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. |
1,027 |
| 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 |
805 |
| 18 |
HuFriedyGrouphufriedygroup.com
Manufacturing dental instruments and infection prevention products, helping dental professionals achieve superior clinical outcomes and safety for patients. |
780 |
| 19 |
Akorn Pharmaceuticalsakorn.com
Develops, manufactures, and markets prescription, consumer health, and animal health products, including ophthalmics, injectables, and oral liquids. |
704 |
| 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 |
636 |
| 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 |
549 |
| 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. |
536 |
| 23 |
Young Innovationsyounginnovations.com
A global manufacturer and distributor of dental supplies and equipment, focused on delivering innovative products to clinicians and patients |
501 |
| 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 |
194 |
| 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. |
120 |
| 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 |
36 |
| 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 |
32 |
| 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 |
30 |
| 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 |
20 |
Turn this list into pipeline
Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.
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.
More company lists in Illinois
- The largest companies in Illinois 4,175
- Hospitals and Health Care companies in Illinois 274
- Financial services firms in Illinois 267
- Manufacturers in Illinois 254
- IT Services and IT Consulting companies in Illinois 230
- Financial Services companies in Illinois 203
- Transportation, Logistics, Supply Chain and Storage companies in Illinois 195
- Critical infrastructure operators in Illinois 178
- Education providers in Illinois 176
- Retail chains in Illinois 172
- SaaS companies in Illinois 172
- IT services companies in Illinois 166
- Healthcare providers in Illinois 140
- Higher Education companies in Illinois 139
- Logistics companies in Illinois 131
- Hardware manufacturers in Illinois 127
- Software Development companies in Illinois 126
- Truck Transportation companies in Illinois 123
- Insurance companies in Illinois 118
- Family-owned companies in Illinois 112
- Construction companies in Illinois 107
- Non-profit Organizations companies in Illinois 106
- Venture capital and private equity firms in Illinois 103
- Consulting firms in Illinois 96
The same list elsewhere in United States
- Pharmaceutical companies in the United States 831
- Pharmaceutical companies in California 149
- Pharmaceutical companies in Massachusetts 82
- Pharmaceutical companies in New Jersey 73
- Pharmaceutical companies in Pennsylvania 51
- Pharmaceutical companies in North Carolina 48
- Pharmaceutical companies in Texas 37
- Pharmaceutical companies in New York State 36
- Pharmaceutical companies in Florida 34
- Pharmaceutical companies in Minnesota 25