| # | Company | Employees |
|---|---|---|
| 1 |
University of Connecticutuconn.edu
A renowned public university with 32,000 students, offering a variety of undergraduate, graduate, and professional degree programs across multiple schools and colleges |
14,027 |
| 2 |
Hartford HealthCarehartfordhealthcare.org
Providing comprehensive healthcare services including hospitals, behavioral health, physician groups, urgent care, home care, and specialized medical institutes across Connecticut. |
10,736 |
| 3 |
Yale New Haven Hospitalynhh.org
Academic medical center with extensive specialties, trauma, transplant, cancer, pediatric, psychiatric services, nursing excellence, and advanced technology integration. |
9,266 |
| 4 |
Nuvance Healthnuvancehealth.org
Nonprofit hospital system offering healthcare services in the Hudson Valley and western Connecticut through award-winning hospitals, outpatient services, and medical practices |
7,335 |
| 5 |
Yale School of Medicinemedicine.yale.edu
A world-renowned center for biomedical research, education, and advanced healthcare with affiliations to leading institutions and a unique curriculum promoting independent thinking |
6,960 |
| 6 |
Yale New Haven Healthynhhs.org
A healthcare organization with five hospitals offering advanced medical treatments, research, and innovations, along with access to primary care physicians and specialists |
5,708 |
| 7 |
Veterans Administation
A Hospital and Health Care organization providing services in Sepulveda, California to support veterans in the United States |
5,253 |
| 8 |
Hartford Hospitalhartfordhospital.org
A leading healthcare provider in New England, offering high-quality care across various clinical disciplines including mental health services and long-term care |
4,932 |
| 9 |
UConn Healthhealth.uconn.edu
Provides healthcare, medical and dental education, and conducts research. Operates a hospital, medical group, and dental practices across Connecticut. |
4,353 |
| 10 |
Saint Francis Hospitaltrinityhealthofne.org
A major teaching hospital in Connecticut part of a large Catholic healthcare system, offering comprehensive medical services and specialized centers of excellence |
3,326 |
| 11 |
Community Health Centerchc1.com
A leading provider of primary medical, dental, and mental health services to uninsured and underinsured individuals, using innovative service delivery models and technology |
2,864 |
| 12 |
Connecticut Children'sconnecticutchildrens.org
A leading pediatric academic medical center dedicated to advancing pediatric care through medical innovation, technology, research, and specialized healthcare services |
2,621 |
| 13 |
Stamford Healthstamfordhealth.org
A not-for-profit healthcare organization in Stamford, CT providing high-quality health & wellness services, specialized orthopedic care, cancer treatment, and medical education |
2,565 |
| 14 |
Middlesex Healthmiddlesexhealth.org
A not-for-profit healthcare network in Connecticut, offering a magnet hospital, cancer centers, emergency and urgent care services, and specialized medical care |
2,436 |
| 15 |
Bridgeport Hospitalbridgeporthospital.org
Private, not-for-profit acute care hospital in Connecticut's most populous city Offers burn care, various medical specialties, and is part of a larger healthcare system |
2,146 |
| 16 |
Trinity Health Of New Englandtrinityhealthofne.org
Integrated health care delivery system in New England with world-class providers and facilities, focusing on better health, care, and lower costs for patients |
1,808 |
| 17 |
Veterans Affairs Hospitalva.gov
An international company based in Washington, DC that specializes in veterans affairs and healthcare services |
1,699 |
| 18 |
Danbury Hospitalnuvancehealth.org
A not-for-profit community hospital providing convenient access to exceptional care, committed to improving health and well-being through personalized services and wellness programs |
1,466 |
| 19 |
Greenwich Hospitalgreenwichhospital.org
A progressive regional hospital in Connecticut and New York, affiliated with Yale University School of Medicine, offering advanced care and career opportunities |
1,458 |
| 20 |
GeneDxgenedx.com
Specializing in genetic diagnosis, offering exome and genome tests to provide personalized health plans, accelerate drug discovery, and improve health system efficiencies |
1,260 |
| 21 |
Hospital for Special Carehfsc.org
A leading long-term acute care hospital providing specialized care and rehabilitation for adults and children with various medical conditions in Connecticut |
1,185 |
| 22 |
Lawrence + Memorial Hospitallmhospital.org
A not-for-profit hospital providing acute care services to a diverse range of patients in Connecticut and beyond, with specialized medical programs and advanced diagnostic technology |
1,175 |
| 23 |
PetVet Care Centerspetvetcarecenters.com
A network of over 460 Veterinary Hospitals providing specialty and general practice services locally, supported globally, with career opportunities available |
1,173 |
| 24 |
Saint Mary's Hospitalstmh.org
Acute care hospital in Greater Waterbury offering cardiac, stroke, pediatric emergency care, surgical services, and robotic surgery Affiliated with Trinity Health |
1,145 |
| 25 |
The Hospital of Central Connecticutthocc.org
A healthcare network offering comprehensive services including acute care, trauma centers, behavioral health, senior care, and specialized care in various medical fields |
1,135 |
| 26 |
Griffin Hospitalgriffinhealth.org
A 160-bed acute care community hospital known for patient-centered care, affiliated with Yale School of Medicine, and recognized for industry-leading patient satisfaction |
1,082 |
| 27 |
Bristol Hospital and Health Care Group, Inc.bristolhealth.org
Leading healthcare provider in the greater Bristol area since 1921, offering a wide range of services including emergency care, surgical center, maternity unit, ICU, and more |
1,066 |
| 28 |
Apple Rehabapple-rehab.com
A diversified health care company offering sub-acute and long term care services, known for innovation, operational excellence, and patient-centered care |
1,040 |
| 29 |
The William W. Backus Hospitalbackushospital.org
A leading healthcare provider in eastern Connecticut, offering a wide range of services through an integrated health system within Hartford HealthCare |
1,011 |
| 30 |
Masonicaremasonicare.org
Connecticut-based provider of healthcare and retirement living for seniors, offering compassionate care, support, and various services in different settings statewide |
909 |
| 31 |
Yale New Haven Hospital - Saint Raphael Campusynhh.org
A hospital campus in New Haven, CT with 1,541 beds, comprised of children's, cancer, and psychiatric hospitals, and affiliated with Yale School of Medicine |
873 |
| 32 |
ProHealth Physiciansprohealthmd.com
A leading physician-led primary care organization in Connecticut, part of a national health services business, focused on high-quality, cost-effective care |
854 |
| 33 |
Waterbury Hospitalwaterburyhospital.org
An award-winning hospital focused on providing exceptional patient care with a compassionate team of doctors, nurses, and staff |
838 |
| 34 |
MidState Medical Centermidstatemedical.org
MidState Medical Center provides high-quality acute-care services including surgery, emergency medicine, oncology, maternal fetal medicine, and specialized care through Hartford HealthCare network |
819 |
| 35 |
Western Connecticut Health Network (WCHN)nuvancehealth.org
A healthcare network providing personalized care through three hospitals, a large medical group, and home care services to local communities |
794 |
| 36 |
Ability Beyondabilitybeyond.org
Empowering individuals with disabilities to live, work, and thrive through innovative programs and supported services in Connecticut and New York |
711 |
| 37 |
Day Kimball Healthdaykimball.org
A premier provider of integrated healthcare services in Northeast Connecticut and nearby areas, offering a comprehensive network of medical care and specialties |
685 |
| 38 |
Hartford HealthCare Medical Grouphartfordhealthcare.org
A large multi-speciality medical group in Connecticut, part of a comprehensive healthcare network offering high-quality care across various specialties and services |
660 |
| 39 |
Athena Health Care Systemsathenahealthcare.com
A regional leader providing skilled nursing, assisted living, home health, hospice care, and private duty programs in Southern New England |
630 |
| 40 |
Maplewood Senior Livingmaplewoodseniorliving.com
A leading senior living provider offering unique communities with exceptional services, amenities, and a passion for caregiving and resident satisfaction |
614 |
| 41 |
Wheeler Healthwheelerhealth.org
This company offers integrated primary and behavioral health, education, and recovery solutions for individuals, families, and communities in Connecticut |
594 |
| 42 |
Preferred Therapy Solutionspreftherapy.com
Provider of rehabilitation program management and therapy staffing services for sub-acute and long-term care facilities, focusing on superior care and tailored solutions for success |
584 |
| 43 |
Gaylord Specialty Healthcaregaylord.org
Nonprofit health system in Connecticut offering inpatient and outpatient rehabilitation services for individuals recovering from illness or injury Committed to quality care and compassion |
567 |
| 44 |
Community Health Resourceschrhealth.org
A leading provider of behavioral health services in Connecticut, offering personalized care for mental illness, addiction, and trauma through community-based programs and expert staff |
557 |
| 45 |
Connecticut Orthopaedicsct-ortho.com
Leading orthopaedic practice in Connecticut providing expert care for all ages and injuries, offering convenience, speed, and comprehensive services at multiple locations |
300 |
| 46 |
Wellspringwellspring.org
Provider of residential treatment programs for adolescent girls and young adult women with mental health and relational issues, along with a special education school serving grades 7-12 |
152 |
| 47 |
Rehabilitation Associates, Inc.rehabilitationassociatesinc.com
Comprehensive therapy center providing physical therapy, occupational therapy, speech pathology, social work, and nutrition services, along with rehabilitation programs in specialty areas |
148 |
| 48 |
High Quality Home Therapy, LLChqhtherapy.com
Offers clinical services, educational programming, and medical research. Provides house call services, boutique style care, and faculty from prominent universities. |
37 |
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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 Connecticut
- The largest companies in Connecticut 1,107
- Financial services firms in Connecticut 132
- Financial Services companies in Connecticut 77
- Hospitals and Health Care companies in Connecticut 76
- Critical infrastructure operators in Connecticut 61
- Investment Management companies in Connecticut 60
- Venture capital and private equity firms in Connecticut 59
- Manufacturers in Connecticut 49
- Retail chains in Connecticut 48
- Education providers in Connecticut 44
- Higher Education companies in Connecticut 43
- IT Services and IT Consulting companies in Connecticut 43
- Insurance companies in Connecticut 41
- Aerospace and defence companies in Connecticut 39
- SaaS companies in Connecticut 38
- Primary and Secondary Education companies in Connecticut 34
- Publicly traded companies in Connecticut 34
- Contract manufacturers in Connecticut 33
- Energy companies in Connecticut 29
- Manufacturing companies in Connecticut 28
- Aviation and Aerospace Component Manufacturing companies in Connecticut 27
- Software Development companies in Connecticut 27
- Venture Capital and Private Equity Principals companies in Connecticut 27
- IT services companies in Connecticut 26
The same list elsewhere in United States
- Healthcare providers in the United States 3,019
- Healthcare providers in California 277
- Healthcare providers in New York State 261
- Healthcare providers in Texas 221
- Healthcare providers in Florida 184
- Healthcare providers in Illinois 140
- Healthcare providers in Pennsylvania 139
- Healthcare providers in Massachusetts 108
- Healthcare providers in Tennessee 96
- Healthcare providers in Ohio 90
- Healthcare providers in New Jersey 77
- Healthcare providers in Michigan 76
- Healthcare providers in North Carolina 75
- Healthcare providers in Washington State 73
- Healthcare providers in Georgia 70
- Healthcare providers in Missouri 70
- Healthcare providers in Alabama 66
- Healthcare providers in Maryland 66
- Healthcare providers in Colorado 65
- Healthcare providers in Minnesota 65
- Healthcare providers in Arizona 63
- Healthcare providers in Virginia 63
- Healthcare providers in Indiana 61
- Healthcare providers in New York 95