| # | Company | Employees |
|---|---|---|
| 1 |
Northwell Healthnorthwell.edu
Largest New York healthcare system with hospitals, outpatient facilities, research institutes, medical education, and extensive patient care services. |
56,405 |
| 2 |
Mount Sinai Health Systemmountsinai.org
Provides distinguished care, conducts transformative research, and advances biomedical education through hospitals, a medical school, and extensive ambulatory network. |
30,202 |
| 3 |
NYU Langone Healthjobs.nyulangone.org
World-class academic medical center with top-ranked patient care, education, and research programs, serving diverse communities with excellence and inclusive values |
29,840 |
| 4 |
New York Universitynyu.edu
Research university with global campuses and academic sites offering diverse programs in arts, sciences, law, medicine, business, and professional studies. |
26,981 |
| 5 |
Columbia Universitycolumbia.edu
A renowned leader in higher education, Columbia attracts top minds to drive academic inquiry, make groundbreaking discoveries, and serve society globally |
23,565 |
| 6 |
Cornell Universitycornell.edu
Privately endowed research university partnering with New York State, focusing on public engagement to improve quality of life globally. |
19,921 |
| 7 |
Memorial Sloan Kettering Cancer Centermskcc.org
Specialized teams provide personalized cancer care, conduct innovative research, and train future scientists and clinicians worldwide. |
19,653 |
| 8 |
University of Rochesterrochester.edu
Private research institution providing undergraduate and graduate degrees across seven schools while operating a major health system and NCAA athletics program. |
11,592 |
| 9 |
Weill Cornell Medicinecareers.weill.cornell.edu
A leading medical institution in NYC, conducting cutting-edge research, providing top-notch patient care, and educating future physicians and scientists worldwide |
10,471 |
| 10 |
Syracuse Universitysyracuse.edu
Private international research university offering diverse academic programs, extensive alumni network, and a global student community with rich history. |
10,063 |
| 11 |
Rochester Institute of Technologyrit.edu
A diverse and collaborative community of creators and innovators leveraging technology, arts, and design to shape the future and improve the world |
9,197 |
| 12 |
University of Rochester Medicineurmc.rochester.edu
Academic medical center providing advanced patient care, conducting disease research, and educating future healthcare professionals including doctors, dentists, and nurses. |
8,483 |
| 13 |
Columbia University Irving Medical Centercuimc.columbia.edu
A leading clinical, research, and educational institution providing patient care, medical education, and public health services in northern Manhattan |
7,913 |
| 14 |
Icahn School of Medicine at Mount Sinaiicahn.mssm.edu
A leading medical school and research institution dedicated to training, research, and patient care to advance biomedical discoveries and improve outcomes |
7,423 |
| 15 |
Binghamton Universitybinghamton.edu
A top public university in the Northeast offering broad education, vibrant research programs, financial accessibility, diverse student body, and unique academic opportunities |
7,412 |
| 16 |
SUNY Downstate Health Sciences Universitydownstate.edu
Leading urban medical center offering education in medicine, nursing, public health, and health professions with an affiliated university hospital. |
3,757 |
| 17 |
The City College of New Yorkccny.cuny.edu
Offering high quality and affordable education in a variety of disciplines, emphasizing social change and academic excellence, with diverse programs and research opportunities |
3,528 |
| 18 |
Brookhaven National Laboratorybnl.gov
This company delivers transformative technology and discovery science to address various challenges in energy, environment, and nuclear fields through innovative research |
3,317 |
| 19 |
Brooklyn Collegebrooklyn.edu
Innovative liberal arts institution offering over 120 undergraduate and graduate degree programs in various disciplines with affordable tuition Located in an urban environment with rich student life |
3,317 |
| 20 |
MONTEFIORE MEDICAL CENTERcham.org
A hospital & health care company located in Bronx, New York, providing medical services and care to individuals in the community |
2,905 |
| 21 |
Albert Einstein College of Medicineeinsteinmed.edu
Offers medical and graduate biomedical degrees, located in New York City, and is a not-for-profit, private, nonsectarian institution. |
2,873 |
| 22 |
Lehman Collegelehman.edu
A top senior college in The Bronx, affiliated with CUNY, fostering economic and social mobility for students and the community |
2,440 |
| 23 |
United States Military Academy at West Pointwestpoint.edu
A higher education institution based in NY, United States focused on training future military leaders at West Point Academy |
2,342 |
| 24 |
ICAP at Columbia Universityicap.columbia.edu
A global leader in HIV and health systems strengthening, providing technical assistance and support to governments and organizations in nearly 50 countries |
2,304 |
| 25 |
Council on Foreign Relationscfr.org
An independent nonpartisan organization providing analysis on international issues through a think tank, publication of Foreign Affairs magazine, and online resources |
2,183 |
| 26 |
NYU Grossman School of Medicinemed.nyu.edu
A prestigious medical school training physicians and scientists, advancing patient care, medical education, and scientific research through groundbreaking discoveries and collaboration |
1,952 |
| 27 |
The Rockefeller Universityrockefeller.edu
A prestigious bioscience institution focused on uncovering life processes, leading to transformative medical breakthroughs with renowned faculty and cutting-edge facilities |
1,833 |
| 28 |
Clarkson Universityclarkson.edu
Higher education institution specializing in STEM fields, offering undergraduate, graduate, executive education, and K-12 STEM programs with strong industry impact. |
1,778 |
| 29 |
New York Medical Collegenymc.edu
A prestigious health sciences college offering advanced degrees in medicine, biomedical sciences, and health sciences, with a focus on research and clinical training opportunities |
1,744 |
| 30 |
American Museum of Natural Historyamnh.org
Global institution focused on scientific research, education, and exhibitions about human cultures, natural world, and the universe. |
1,619 |
| 31 |
NYU Tandon School of Engineeringengineering.nyu.edu
Educating engineers and conducting research in smart technology, cybersecurity, and sustainable infrastructure to develop healthy urban communities through creative and connected technical solutions. |
1,572 |
| 32 |
United States Military Academywestpoint.edu
A prestigious leader development institution that molds cadets intellectually, physically, and ethically to become 2nd Lieutenants in the US Army |
1,547 |
| 33 |
The Graduate Center, City University of New Yorkgc.cuny.edu
A hub of research, performance, and discussion for students dedicated to the belief that learning is a public good |
1,428 |
| 34 |
City University of New York-College of Staten Islandcsi.cuny.edu
A senior college of CUNY offering a wide range of programs, research opportunities, student services, and championship athletic teams |
1,371 |
| 35 |
State University of New York College of Environmental Science and Forestryesf.edu
A leading institution focused on environmental studies, renewable technologies, and sustainability Offers undergraduate and graduate programs in various environmental fields |
1,304 |
| 36 |
The Research Foundation for SUNYrfsuny.org
Supporting SUNY researchers through innovative sponsored programs administration, the RF maximizes SUNY's research impact and fosters technology transfer for economic growth |
1,232 |
| 37 |
Child Mind Institutechildmind.org
A nonprofit dedicated to helping children and families with mental health and learning disorders through high-quality care, research, and advocacy |
1,145 |
| 38 |
Research Foundation of The City University of New Yorkrfcuny.org
A private, not-for-profit organization supporting CUNY faculty and staff in obtaining external funding from sponsors and managing funded programs |
1,083 |
| 39 |
Cold Spring Harbor Laboratorycshl.edu
Global leader research education. Provides unique stimulating atmosphere doctoral research. Innovative curriculum trains independent thinkers. |
985 |
| 40 |
Columbia University Mailman School of Public Healthpublichealth.columbia.edu
Leading public health school conducting research, education, and community collaboration to address pressing issues and translate results into action since 1922 |
976 |
| 41 |
GE Researchgeaerospace.com
Innovative engine creating differentiated products for aviation, power, transportation, and healthcare sectors Legacy of transformative innovation continues through interdisciplinary research |
904 |
| 42 |
Population Councilpopcouncil.org
A research organization focused on creating a better world through evidence-based solutions to improve the lives of underserved populations globally |
877 |
| 43 |
The Center for Discoverythecenterfordiscovery.org
A leading research and specialty center offering residential, medical, and education programs, along with unique services like music therapy and agriculture |
804 |
| 44 |
Jacobs School of Medicine and Biomedical Sciences at the University at Buffalomedicine.buffalo.edu
A renowned medical school and research institution, focused on educating physicians, providing patient care, and advancing scientific discovery since 1846 #UBMed175 |
771 |
| 45 |
Columbia University Vagelos College of Physicians and Surgeonsvagelos.columbia.edu
A medical school within Columbia University focused on providing a comprehensive education in medicine, research, and community service in New York City |
757 |
| 46 |
New York Botanical Gardennybg.org
Iconic living museum and National Historic Landmark with diverse plant collections, educational programs, and global plant research and conservation initiatives |
738 |
| 47 |
Columbia Engineeringengineering.columbia.edu
A top engineering school in NYC, advancing technology through research, educating future leaders in engineering, and fostering innovation for a sustainable humanity |
737 |
| 48 |
Donald & Barbara Zucker School of Medicinemedicine.hofstra.edu
The company established the first allopathic medical school in Nassau County, providing innovative medical education and clinical experiences |
727 |
| 49 |
University of Rochester School of Medicine and Dentistryurmc.rochester.edu
A school providing undergraduate and graduate medical education along with master's, PhD, and advanced certificates in biomedical and health sciences |
632 |
| 50 |
Cornell University College of Veterinary Medicinevet.cornell.edu
A leading veterinary college educating students, conducting research, providing clinical care, and contributing to public health and wildlife protection efforts |
584 |
| 51 |
NY Createsny-creates.org
A leading R&D innovation hub focused on semiconductor technology, facilitating partnerships and commercialization to drive high-tech industries and job opportunities |
314 |
| 52 |
NYU Center for Data Sciencecds.nyu.edu
The company is a leading center for Data Science training and research, offering graduate, undergraduate, and postdoctoral programs while shaping the field of Data Science |
123 |
| 53 | 41 | |
| 54 |
American Geographical Societyamericangeo.org
A pioneering organization in geographical research and education for over 170 years, promoting geographic knowledge for public policy and national security |
33 |
| 55 |
Irving Institute for Clinical and Translational Researchirvinginstitute.columbia.edu
Facilitating research, training, and collaboration to advance healthcare innovations for diverse populations, connecting academia with community partnerships to address health concerns |
21 |
| 56 |
Digital Supply Chain Institutedscinstitute.org
A research institute specializing in digital supply chains, focused on advancing enterprise SCs and implementing SCM best practices |
7 |
| 57 |
The Cure Is Nowthecureisnow.org
A national non-profit organization dedicated to eliminating diseases through awareness, education, and scientific research using emerging technologies |
5 |
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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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