The 66 largest critical infrastructure operators in Louisiana (2026 list)

#	Company	Industry	Headquarters	Employees	Founded
1	Lumen Technologies lumen.com The company provides digital connectivity solutions, utilizing their network strength to connect people, data, and applications quickly, securely, and effortlessly	Technology, Information and Internet	🇺🇸 Monroe	49,357	n/a
2	CenturyLink centurylink.com A technology leader providing hybrid networking, cloud connectivity, and security solutions globally through a secure and reliable global fiber network	IT Services and IT Consulting	🇺🇸 Monroe	23,931	n/a
3	Ochsner Health ochsner.org Nonprofit healthcare provider operating hospitals and urgent care centers, delivering expert care and promoting healthier lives across Gulf South.	Hospitals and Health Care	🇺🇸 New Orleans	18,121	n/a
4	Entergy entergy.com This company provides safe, affordable, and reliable energy to the Middle South region, with a focus on clean power generation and community impact	Utilities	🇺🇸 New Orleans	12,253	1913
5	CenturyLink (Formerly Qwest)centurylink.com A leading US communications provider offering reliable and secure networking solutions, helping businesses manage network and IT complexity with cyber security solutions	Telecommunications	🇺🇸 Monroe	10,250	1930
6	Amedisys amedisys.com Amedisys provides exceptional home health, hospice, and personal care services, with a focus on personalized, clinically distinct care for patients	Hospitals and Health Care	🇺🇸 Baton Rouge	9,468	1982
7	LCMC Health lcmchealth.org Nonprofit health system providing comprehensive, community-focused care across multiple hospitals and urgent care centers in Louisiana and the Gulf Coast.	Hospitals and Health Care	🇺🇸 New Orleans	6,501	2009
8	Our Lady of the Lake Health fmolhs.org A not-for-profit medical center in Baton Rouge, Louisiana offering comprehensive healthcare services, graduate medical education programs, and specialized care for various conditions	Hospitals and Health Care	🇺🇸 Baton Rouge	3,803	n/a
9	Willis Knighton Health wkhs.com A not-for-profit community healthcare corporation with hospitals, specialized centers, physician network, wellness centers, and philanthropic initiatives in Louisiana region	Hospitals and Health Care	🇺🇸 Shreveport	3,273	1924
10	Acadian Ambulance acadianambulance.com A provider of emergency and non-emergency transportation services in over 70 counties, with nationally accredited medics exceeding EMT requirements	Hospitals and Health Care	🇺🇸 Lafayette	2,649	1971
11	Baton Rouge General Medical Center brgeneral.org A full-service community hospital with over 600 beds, offering high-quality healthcare, groundbreaking services, and a wide range of medical programs and services	Hospitals and Health Care	🇺🇸 Baton Rouge	2,365	n/a
12	FMOL Health fmolhs.org health system delivering compassionate, coordinated care prioritizing patients and communities, supporting team members with comprehensive rewards and development	Hospitals and Health Care	🇺🇸 Baton Rouge	2,212	1911
13	Edison Chouest Offshore chouest.com A global leader in marine transportation solutions, offering diverse and technologically advanced vessels for a growing customer base worldwide	Maritime Transportation	🇺🇸 Cut Off	2,078	1960
14	Ochsner Lafayette General ochsner.org Healthcare organization with multiple hospitals, clinics, and professional centers serving 220,000 patients annually, including a Level II Trauma Center and teaching hospitals	Hospitals and Health Care	🇺🇸 Lafayette	1,749	n/a
15	Woman's Hospital womans.org Specializing in women's health, this nonprofit organization is dedicated to improving the well-being of women and infants through innovative programs and services	Hospitals and Health Care	🇺🇸 Baton Rouge	1,676	1968
16	IBERIABANK firsthorizon.com The company provides personalized financial services including retail, commercial, private banking, mortgages, online banking, and investment services with a focus on customer satisfaction	Banking	🇺🇸 Lafayette	1,598	1887
17	Louisiana Department of Health ldh.la.gov Protect and promote health, ensure access to medical, preventive, and rehabilitative services for all Louisiana residents effectively.	Hospitals and Health Care	🇺🇸 Baton Rouge	1,531	n/a
18	PHI Aviation phihelico.com A global leader in helicopter transportation, providing safe and reliable services for energy, medical, government, and military organizations with innovative solutions	Airlines and Aviation	🇺🇸 Lafayette	1,466	1949
19	St. Tammany Health System sttammany.health A full-service healthcare provider offering world-class medical services with a focus on wellness, prevention, and disease management in a self-supporting community health system	Hospitals and Health Care	🇺🇸 Covington	1,456	1954
20	Ochsner LSU Health ochsnerlsuhs.org A partnership between Ochsner Health and LSU Health Shreveport to provide top-notch healthcare, medical education, and research in northern Louisiana	Hospitals and Health Care	🇺🇸 Shreveport	1,313	n/a
21	North Oaks Health System northoaks.org A leading healthcare system in Louisiana with hospitals, diagnostic centers, rehab clinics, surgery centers, hospice services, and a physician group	Hospitals and Health Care	🇺🇸 Hammond	1,297	1960
22	Lake Charles Memorial Health System lcmh.com A leading not-for-profit healthcare system in southwest Louisiana, offering personalized care, comprehensive services, a Level III Trauma Center, and advanced medical technology	Hospitals and Health Care	🇺🇸 Lake Charles	1,291	1952
23	Tulane Medical Center tuhc.com Providing opportunities to practice medicine on the leading-edge, focusing on teaching, research, and patient care in historic New Orleans	Hospitals and Health Care	🇺🇸 New Orleans	1,276	1976
24	East Jefferson General Hospital lcmchealth.org A not-for-profit community hospital with state-of-the-art facilities, providing high-quality, compassionate healthcare with a focus on patient-centered care	Hospitals and Health Care	🇺🇸 Metairie	1,225	1971
25	Touro Infirmary lcmchealth.org A not-for-profit, community-based adult acute care hospital offering medical training, inpatient/outpatient services, home health care, physician services, and retirement living options	Hospitals and Health Care	🇺🇸 New Orleans	1,166	1852
26	Our Lady of Lourdes Health fmolhs.org Regional acute care medical center with a focus on the healing ministry of Jesus Christ, offering a variety of medical and surgical specialties and access to comprehensive care resources	Hospitals and Health Care	🇺🇸 Lafayette	1,164	1949
27	CenturyLink Business centurylink.com Innovative nationwide telecommunications company empowering small businesses with customizable solutions to serve local communities Visit website to learn more	Telecommunications	🇺🇸 Monroe	1,124	n/a
28	Children's Hospital New Orleans manningchildrens.org A not-for-profit pediatric medical center offering a wide range of healthcare services for children from birth to 21 years, with over 40 pediatric specialties	Hospitals and Health Care	🇺🇸 New Orleans	1,071	1955
29	Lafayette General Health lafayettegeneral.com Healthcare organization with multiple hospitals, clinics, and professional centers serving 220,000 patients annually, offering graduate medical education and trauma care in Southwest Louisiana	Hospitals and Health Care	🇺🇸 Lafayette	935	n/a
30	Cleco cleco.com The company focuses on providing clean, sustainable, and safe energy solutions, striving to reduce carbon emissions and achieve net zero by 2050	Oil and Gas	🇺🇸 Pineville	915	1934
31	West Jefferson Medical Center lcmchealth.org A leading not-for-profit hospital in Marrero, Louisiana, providing excellent patient care and comprehensive healthcare services to the West Bank and surrounding areas	Hospitals and Health Care	🇺🇸 Marrero	893	1956
32	Louisiana Department Of Transportation and Development wwwsp.dotd.la.gov A Louisiana-based company serving transportation and water resource needs, committed to teamwork, quality, integrity, professionalism, innovation, public service, and excellence	Government Administration	🇺🇸 Baton Rouge	885	n/a
33	St. Francis Health fmolhs.org A not-for-profit medical center in Monroe, Louisiana with 321 beds offering comprehensive healthcare services, specialized medical care, and advanced surgical procedures	Hospitals and Health Care	🇺🇸 Monroe	828	1913
34	Highland Hospital A hospital & health care company located in Shreveport, Louisiana, providing healthcare services to the community	Hospitals and Health Care	🇺🇸 Shreveport	827	n/a
35	REV letsrev.com A long-standing communication company providing innovative TV, Internet, and phone services with a 100% fiber-to-the-home network in Louisiana	Telecommunications	🇺🇸 Gonzales	823	1935
36	University Medical Center New Orleans lcmchealth.org Academic medical center in New Orleans offering expert healthcare services, training healthcare professionals, conducting research, and serving the community for 275 years	Hospitals and Health Care	🇺🇸 New Orleans	813	n/a
37	Tulane Medical Center lcmchealth.org A leading hospital in New Orleans offering advanced medical care, emergency services, and expert care for children and adults, founded in 1834	Hospitals and Health Care	🇺🇸 New Orleans	809	n/a
38	Terrebonne General Health System tghealthsystem.com A nationally recognized non-profit health care system offering advanced services, including acute care, cancer care, diagnostic imaging, rehabilitation, and emergency services	Hospitals and Health Care	🇺🇸 Houma	765	n/a
39	Origin Bank origin.bank Banking and insurance services provider across Louisiana, Texas, and Mississippi, focusing on rewarding experiences for employees, customers, communities, and shareholders	Banking	🇺🇸 Ruston	731	1912
40	St. Elizabeth Hospital fmolhs.org A 78-bed community hospital in Gonzales, Louisiana, part of Franciscan Missionaries of Our Lady Health System, providing healing, spiritual care with joyfulness and humility	Hospitals and Health Care	🇺🇸 Baton Rouge	715	2000
41	Thibodaux Regional Health System thibodaux.com A leading healthcare provider in the Bayou Region, offering world-class care through a wide range of medical services and innovative wellness programs	Hospitals and Health Care	🇺🇸 Thibodaux	714	n/a
42	VieMed Healthcare viemed.com provider of in-home medical equipment and respiratory therapy with clinical practitioners delivering treatment and counseling using advanced technology	Hospitals and Health Care	🇺🇸 Lafayette	704	2006
43	Rapides Regional Medical Center geo-blocked-site.azurewebsites.net A downtown medical center in Central Louisiana offers a wide range of healthcare services including a 380-bed hospital, urgent care clinics, and specialized medical centers	Hospitals and Health Care	🇺🇸 Alexandria	664	n/a
44	RestorixHealth restorixhealth.com This company provides advanced wound healing services, education, and supplies to enhance patient outcomes in healthcare settings Visit website for more information	Hospitals and Health Care	🇺🇸 Metairie	663	n/a
45	REV letsrev.com A Louisiana-based company with a history of providing high-speed fiber networks through the merger of three pioneering communication providers	Telecommunications	🇺🇸 Reserve	648	1935
46	Globalstar globalstar.com Provides satellite and terrestrial connectivity services, offering secure data transmission, asset tracking, and monitoring for global consumers, businesses, and government agencies.	Satellite Telecommunications	🇺🇸 Covington	637	1991
47	b1BANK b1bank.com A community bank in Baton Rouge, LA, offering relationship-based banking services and innovative technology to support entrepreneurs and small businesses in Louisiana and Texas	Banking	🇺🇸 Baton Rouge	635	2006
48	CenturyLink (Formerly Savvis Inc.)centurylink.com Global communications, hosting, cloud, and IT services provider with a focus on managed hosting, colocation, and cloud solutions for business customers worldwide	Computer and Network Security	🇺🇸 Monroe	630	1930
49	IMTT imtt.com A leading industry player in bulk liquid product handling and storage across North America, specializing in petroleum, biofuels, chemicals, and vegetable/tropical oils	Oil and Gas	🇺🇸 New Orleans	601	n/a
50	LifeShare Blood Center lifeshare.org Nonprofit blood center supplying components to medical facilities, offering rare blood supplies, molecular testing services, and specialized compatibility solutions	Hospitals and Health Care	🇺🇸 Shreveport	337	1942
51	Pelican Credit Union pelicancu.com A full-service credit union in Louisiana with a focus on financial education, offering various financial products to members and emphasizing a friendly, approachable atmosphere	Financial Services	🇺🇸 Baton Rouge	276	1956
52	Associated Terminals associatedterminals.com A leading cargo handling company on the Lower Mississippi River, providing a wide range of logistics services for dry bulk, break bulk, and project cargo shippers	Transportation, Logistics, Supply Chain and Storage	🇺🇸 Convent	258	1990
53	Fidelity Bank LA bankwithfidelity.com A reliable financial institution with over 115 years of experience, offering a wide range of banking services and a commitment to world-class client service	Banking	🇺🇸 New Orleans	245	1908
54	DEMCO demco.org Providing cooperative members with safe, reliable, and competitively priced energy services to improve their quality of life.	Utilities	🇺🇸 Greenwell Springs	228	1938
55	Lafayette Utilities System lus.org Established over a century ago, this community-centered company offers essential services including power, water, wastewater, and fiber-optics telecommunications with a focus on reliability and safety	Utilities	🇺🇸 Lafayette	191	1896
56	The Blood Center thebloodcenter.org A non-profit organization supplying blood, components, and plasma derivatives to local hospitals in South Louisiana and Southern Mississippi since 1960	Hospitals and Health Care	🇺🇸 New Orleans	188	1960
57	Business First Bank b1bank.com A financial institution offering personal/commercial banking, treasury management, and wealth solutions to help clients succeed Known for empowering staff and exceptional service	Banking	🇺🇸 Baton Rouge	186	n/a
58	Placid Refining Company LLC placidrefining.com A semi-complex crude oil refinery in Louisiana offering gasoline, diesel, and jet fuel through a modern truck rack, pipelines, and barges Operating in the southeastern US	Oil and Gas	🇺🇸 Port Allen	173	1975
59	Bonvenu Bank bonvenubank.com A financial institution providing innovative products and services to individuals, businesses, and institutions with a focus on community involvement and growth	Banking	🇺🇸 Bossier City	170	1985
60	Calcasieu Refining Company calcasieurefining.com An oil and energy company located in Lake Charles, LA, specializing in refining processes and operations related to the oil industry	Oil and Gas	🇺🇸 Lake Charles	118	n/a
61	First American Bank and Trust fabt.com Comprehensive financial products and services for investing in a brighter future, closely tied to local communities with visionary leadership	Banking	🇺🇸 Vacherie	95	1910
62	VALERO REFINING valero.com An oil and energy company located in Norco, LA that specializes in refining processes for various petroleum products	Oil and Gas	🇺🇸 Norco	87	n/a
63	The Evangeline Bank and Trust Company therealbank.com Independent banking company providing top-notch customer service and financial services to consumers and businesses, while actively participating in local communities	Banking	🇺🇸 Ville Platte	85	1906
64	The First National Bank of Jeanerette yourfnb.com A company dedicated to serving families and businesses in their communities with personalized financial solutions and exceptional customer service	Banking	🇺🇸 Jeanerette	55	1905
65	Richland State Bank (Rayville, LA)b1bank.com A financial institution offering a range of banking services to individuals and businesses in the community	Banking	🇺🇸 Rayville	6	1902
66	Bank of Coushatta - Ellerbe mybcbank.com A company that prioritizes customer care, providing real people for everyday banking needs	Banking	🇺🇸 Shreveport	6	1897

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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.

The 66 largest critical infrastructure operators in Louisiana

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