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Top 20 Medical Testing & Clinical Laboratories Companies in US.

Tenet Healthcare Corp.

Dallas,  Texas,  United States 75202 (Map)

131,610 Employees  > view

Tenet Healthcare Corporation is a diversified healthcare services company with 130,000 employees united around a common mission: to help people live happier, healthier lives. Through its subsidiaries, partnerships and joint ventures, including United Surgical Partners Inte... more

DaVita Inc

Denver,  Colorado,  United States 80202 (Map)

70,300 Employees  > view

DaVita Inc., a Fortune 500 company, is the parent company of DaVita Kidney Care and DaVita Medical Group. DaVita Kidney Care is a leading provider of kidney care in the United States, delivering dialysis services to patients with chronic kidney failure and end stage renal ... more


Burlington,  North Carolina,  United States 27215 (Map)

52,000 Employees  > view

Laboratory Corporation of America Holdings, an S&P 500 company, is the world's leading healthcare diagnostics company, providing comprehensive clinical laboratory services through LabCorp Diagnostics, and end-to-end drug development support through Covance Drug Develop... more

Quintiles Transnational Corp.

Durham,  North Carolina,  United States 27703 (Map)

50,000 Employees  > view

Quintiles (NYSE: Q) helps biopharma and other healthcare companies improve their probability of success by connecting insights from our deep scientific, therapeutic and analytics expertise with superior delivery for better outcomes. From advisory through operations, Quint... more

Quest Diagnostics Incorporated

Madison,  New Jersey,  United States 07940 (Map)

43,000 Employees  > view

Quest Diagnostics empowers people to take action to improve health outcomes. Derived from the world's largest database of clinical lab results, our diagnostic insights reveal new avenues to identify and treat disease, inspire healthy behaviors and improve health care manag... more

Sun Healthcare Group Inc

Albuquerque,  New Mexico,  United States 87109 (Map)

28,697 Employees  > view

Sun Healthcare Group, Inc., with executive offices in Irvine, California, owns SunBridge Healthcare Corporation and other affiliated companies that operate long-term and postacute care centers in many states. In addition, the Sun Healthcare Group family of companies provi... more

HealthSouth Corp.

Birmingham,  Alabama,  United States 35243 (Map)

22,885 Employees  > view

HealthSouth is the nation's largest owner and operator of inpatient rehabilitation hospitals in terms of patients treated and discharged, revenues and number of hospitals. Operating in 28 states across the country and in Puerto Rico, HealthSouth serves patients through it... more

Fisher Scientific International Inc.

Hampton,  New Hampshire,  United States 03842 (Map)

19,515 Employees  > view

Fisher Scientific International Inc. (NYSE: FSH) is a leading provider of products and services to the scientific community. Fisher facilitates discovery by supplying researchers and clinicians in labs around the world with the tools they need. We serve pharmaceutical and... more

PAREXEL International Corporation

Waltham,  Massachusetts,  United States 02451 (Map)

18,600 Employees  > view

PAREXEL International Corporation is a leading global biopharmaceutical services company, providing a broad range of expertise-based clinical research, consulting, medical communications, and technology solutions and services to the worldwide pharmaceutical, biotechnology ... more

St. Jude Medical Inc

Saint Paul,  Minnesota,  United States 55117 (Map)

18,000 Employees  > view

St. Jude Medical is a leading global medical device manufacturer and is dedicated to transforming the treatment of some of the world's most expensive epidemic diseases. The company does this by developing cost-effective medical technologies that save and improve lives of p... more

DENTSPLY International Inc

York,  Pennsylvania,  United States 17405 (Map)

15,700 Employees  > view

DENTSPLY International Inc. is a leading manufacturer and distributor of dental and other consumable medical device products. The Company believes it is the world's largest manufacturer of consumable dental products for the professional dental market. For over a century, ... more

VCA Inc.

Los Angeles,  California,  United States 90064 (Map)

14,700 Employees  > view

VCA is a leading animal healthcare company with operations in the United States and Canada. Through VCA Animal Hospitals, VCA owns, operates and manages the largest network of free-standing veterinary hospitals in the United States and Canada, while its Antech Diagnostics ... more

National HealthCare Corporation

Murfreesboro,  Tennessee,  United States 37130 (Map)

14,450 Employees  > view

NHC offers competitive salaries and benefits, including health, dental, vision and life insurance, 401k match and much more. A complete list of benefits can be available at time of interview. NHC's strength is in our partners' focus on our patients, families, partners an... more

Finisar Corporation

Sunnyvale,  California,  United States 94089 (Map)

13,400 Employees  > view

Finisar Corporation (NASDAQ: FNSR) is a global technology leader for fiber optic subsystems and components that enable high-speed voice, video and data communications for telecommunications, networking, storage, wireless, and cable TV applications. For more than 25 years,... more

PRA Health Sciences Inc

Raleigh,  North Carolina,  United States 27612 (Map)

13,000 Employees  > view

PRA is one of the world's leading global contract research organizations, by revenue, providing outsourced clinical development services to the biotechnology and pharmaceutical industries. PRA's global clinical development platform includes approximately 70 offices across ... more

Agilent Technologies Inc.

Santa Clara,  California,  United States 95051 (Map)

12,500 Employees  > view

Agilent Technologies Inc. (NYSE: A), a global leader in life sciences, diagnostics and applied chemical markets, is the premier laboratory partner for a better world. Agilent works with customers in more than 100 countries, providing instruments, software, services and con... more

Covance Inc.

Princeton,  New Jersey,  United States 08540 (Map)

12,500 Employees  > view

Covance, with headquarters in Princeton, New Jersey, is one of the world's largest and most comprehensive drug development services companies with annual revenues greater than $1.5 billion, global operations in more than 20 countries, and more than 9,300 employees worldwi... more


Redwood City,  California,  United States 94062 (Map)

10,001 Employees  > view

TryMyUi is a service that enables you to essentially get into your users' heads as they navigate your website and try to accomplish various tasks. We do this by assembling and training a group of testers, who you can ask to peruse your website and perform various tasks. Th... more

Hema Diagnostic Systems LLC

Hollywood,  Florida,  United States 33025 (Map)

10,001 Employees  > view

Hema Diagnostic Systems, LLC ( is a rapidly growing biotechnology company involved in the development, manufacture, assembly, and distribution of diagnostics targeting primary as well as orphan infectious diseases. Hema Diagnostic Systems continues to expa... more

Roche Diagnostics Corporation

Indianapolis,  Indiana,  United States 46250 (Map)

10,001 Employees  > view

Headquartered in Basel, Switzerland, Roche is a leader in research-focused healthcare with combined strengths in pharmaceuticals and diagnostics. Roche is the world's largest biotech company with truly differentiated medicines in oncology, virology, inflammation, metaboli... more

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