Eisai headquarters details
Location map
Open in Google MapsAll Eisai office locations
| City | State / region | Country | Type |
|---|---|---|---|
| ward area of Tokyo HQ | Tokyo | Japan | Headquarters |
About Eisai
Eisai (Tokyo Stock Exchange (JPX): 4523) is headquartered in ward area of Tokyo, Tokyo, Japan. Founded in 1941, the company operates across 12 countries with approximately 10,917 employees worldwide.
Where is Eisai's main office?
Eisai's main headquarters office is located at 4-6-10 Koishikawa, ward area of Tokyo, Tokyo 112-8088. This serves as the company's primary corporate address and is home to its executive leadership team.
Eisai regional offices
Beyond its headquarters in ward area of Tokyo, Eisai maintains 28 offices across 12 countries. Regional offices span 12 countries.
Eisai contact information
The main switchboard for Eisai headquarters can be reached at 81338173700. For investor relations, visit eisai.com/investor-relations.
What does Eisai do?
Eisai Co., Ltd. produces prescription drugs and medical equipment, and sells mainly to sales agents and subsidiaries. Through its subsidiary, the Company produces and sells diagnostic drugs. Eisai also markets its products through related companies in the US, Europe, and Asia. The Company also manufactures and sells foods, livestock feeds, chemical, and agrochemicals.
Frequently asked questions
Where is Eisai headquarters?
Eisai's headquarters is located at 4-6-10 Koishikawa, ward area of Tokyo, Tokyo 112-8088, Japan.
How many offices does Eisai have?
Eisai operates 28 offices across 12 countries as of 2026.
What is Eisai's corporate address?
The official corporate address is 4-6-10 Koishikawa, ward area of Tokyo, Tokyo 112-8088.
When was Eisai founded?
Eisai was founded in 1941 and has grown to employ approximately 10,917 people worldwide.
What is Eisai's phone number?
The main phone number for Eisai headquarters is 81338173700.