This selection of large companies in Istanbul primarily comprises healthcare providers, ranging from established hospital groups to specialized medical centers. Key players include Acibadem Healthcare Group, offering integrated medical solutions across multiple countries; Medical Park Hastaneler Grubu, providing comprehensive medical services; and Medipol Healthcare Group, a private university hospital. Other notable providers are Memorial Healthcare Group, focused on international quality standards, and Amerikan Hastanesi, a long-standing healthcare center since 1920.
A clear pattern among these companies is their relatively recent founding, with many established in the 1990s and early 2000s, indicating a period of significant growth in Istanbul's private healthcare sector. While the majority are hospitals, there are also a few higher education institutions such as Okan University and Maltepe University.
| # | Company | Employees | |||
|---|---|---|---|---|---|
| 1 |
Acibadem Healthcare Groupacibadem.com.tr
Leading healthcare services, hospitals, and clinics, providing diagnosis, treatment, and integrated medical solutions across multiple countries, including mobile healthcare and project management. |
9,234 | |||
| 2 |
Medical Park Hastaneler Grubumedicalpark.com.tr
A healthcare group in Turkey providing comprehensive medical services with ethical principles, respect for patient rights, experienced staff, and advanced technology |
6,751 | |||
| 3 |
Medipol Healthcare Groupmedipol.com.tr
Leading private university hospital in Turkey, offering General, Cardiovascular, Oncology, and Dental services with advanced medical technology and a focus on improving quality of life |
4,053 | |||
| 4 |
Memorial Healthcare Groupmemorial.com.tr
Leading healthcare provider in Turkey with a focus on international quality standards, ethical principles, and patient satisfaction Offering advanced medical treatments and facilities across multiple locations |
3,253 | |||
| 5 |
Amerikan Hastanesiamerikanhastanesi.org
A leading healthcare center in Turkey and neighboring countries, providing modern medical services since 1920 with a non-profit approach |
2,160 | |||
| 6 |
Başakşehir Çam ve Sakura City Hospitalcamsakurasehir.saglik.gov.tr
Provides quality health services prioritizing healthy life, through scientific diagnosis and treatment while focusing on ethics, satisfaction, trust, and medical education |
1,907 | |||
| 7 |
Liv Hospital Grouplivhospital.com
Liv Hospital aims to elevate the standards of healthcare by providing advanced medical services inspired by the miraculous abilities of the human body |
1,772 | |||
| 8 |
Koç Üniversitesi Hastanesikuh.ku.edu.tr
Providing high-quality, transparent, and integrated patient care services while complying with laws and ethical principles, with a focus on patient needs and privacy |
1,658 | |||
| 9 |
Okan Universityokan.edu.tr
Dynamic university offering undergraduate and graduate programs in various fields with a focus on university-business cooperation and practical skills for professional life |
1,641 | |||
| 10 |
Florence Nightingale Hospitalflorence.com.tr
Established in 1989 as a small health center, the organization has grown into a leading hospital performing open-heart surgeries at international standards |
1,393 | |||
| 11 | 1,386 | ||||
| 12 |
Maltepe Universitymaltepe.edu.tr
Education institution promoting modern teaching methods, critical thinking, creativity, collaboration, and respect for democracy and Atatürk's principles for global competitiveness |
1,103 | |||
| 13 |
Dünyagöz Hastaneler Grubudunyagoz.com
A leading provider of comprehensive eye care services with a global presence, offering advanced treatments and serving patients from over 160 countries annually |
1,063 | |||
| 14 |
Atlas Üniversitesiatlas.edu.tr
The company aims to make a positive impact on the future by recognizing the butterfly effect and the potential consequences of small actions or decisions |
1,033 | |||
| 15 |
Altınbaş Üniversitesialtinbas.edu.tr
A university with an official presence on LinkedIn, likely focused on providing education and research opportunities to students and academics |
924 | |||
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| 16 |
MLPCAREmlpcare.com
A leading healthcare group with hospitals in multiple cities, providing top-quality medical services, collaborating with universities, and prioritizing employee development and satisfaction |
851 | |||
| 17 |
KOLAN HOSPITAL GROUPkolanhastanesi.com.tr
Providing high-quality and reliable healthcare services with a patient-centered approach, experienced medical staff, advanced technology, and a focus on patient satisfaction |
786 | |||
| 18 |
Prof. Dr. Cemil Taşcıoğlu Şehir Hastanesicemiltascioglush.saglik.gov.tr
A public health organization in Istanbul operating under the Ministry of Health, providing healthcare services and medical research at a university hospital |
782 | |||
| 19 |
İstanbul Central Hospitalcentral.com.tr
Health professionals in Istanbul's Anatolian side with 20 years of experience offer continuous services with over 300 staff in Kozyatağı |
767 | |||
| 20 |
Ozel Erdem Hastahaneleri (Erdem Hospitals)erdemhastahanesi.com.tr
Private hospital group in Istanbul, Turkey with two branches, hemodialysis centers, and over 500 employees providing healthcare services to patients |
682 | |||
| 21 |
İstanbul Yeni Yüzyıl Üniversitesiyeniyuzyil.edu.tr
A university founded in 2009, offering various faculties, institutes, and programs with a focus on education and healthcare principles |
638 | |||
| 22 | 628 | ||||
| 23 |
Bakirkoy Dr. Sadi Konuk Training & Research Hospital Istanbulbeah.gov.tr
A referral teaching hospital and level I trauma center located in Bakirkoy, Istanbul, Turkey, providing advanced medical training and research services |
592 | |||
| 24 |
Tez Medikaltezmedikal.com.tr
Operating in Atatürk Airport for 8 years, providing comprehensive healthcare solutions for 100 million passengers with a team of 800 employees across multiple airports in Turkey |
578 | |||
| 25 |
Yeditepe Üniversitesi Hastaneleriyeditepehastaneleri.com
A leading university hospital network in Turkey offering a wide range of medical services, advanced treatments, and innovative research in various medical fields |
577 | |||
| 26 |
İstanbul Okan Üniversitesi Hastanesiokanhastanesi.com.tr
A full-service general hospital with a 250-bed capacity, 10 operating rooms, and advanced technology, serving patients in Tuzla and Acıbadem districts in Istanbul |
527 | |||
| 27 |
Yeni Yuzyil Universitesi Ozel Gaziosmanpasa Hastanesigophastanesi.com.tr
A leading hospital in Istanbul offering specialty medical services with advanced technology, exceptional care, and a focus on patient satisfaction |
520 | |||
| 28 |
Medicana Health Groupmedicanainternational.com
A leading healthcare center in Turkey with 13 hospitals, almost 1,000 doctors, and 6,500 employees, providing international patients with top-notch medical care |
476 | |||
| 29 |
Bakırköy Prof. Dr. Mazhar Osman Ruh Sağlığı ve Sinir Hastalıkları Eğitim ve Araştırma Hastanesibakirkoyruhsinireah.saglik.gov.tr
A leading institution in mental health and neurological care, focusing on psychiatry, neurology, and neurosurgery, while also providing educational services and conducting research |
451 | |||
| 30 |
Dentakay Dental Clinicdentakay.com
A leading dental clinic in Istanbul, Turkey, offering top-quality dental solutions with branches in multiple cities and a growing international presence |
435 | |||
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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 Nov 12, 2026.
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