Eisai headquarters details
- Street address
- 4-6-10 Koishikawa
- City
- Tokyo
- State / region
- Tokyo Prefecture
- ZIP / postal code
- 112-8088
- Country
- Japan
- Phone
- +81 3 3817 3700
- Founded
- 1941
- Website
- eisai.com
- Stock
- JPX: 4523
- linkedin.com/company/eisai
Location map
Open in Google MapsAll Eisai office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Tokyo HQ | Tokyo Prefecture | Japan | Headquarters |
Showing the headquarters of 28 recorded locations. See every location in GraphIQ →
About Eisai
Eisai (JPX: 4523) is headquartered in Tokyo, Tokyo Prefecture, Japan. Founded in 1941, the company has 28 recorded locations across 12+ countries and employs approximately 10,917 people worldwide.
Where is Eisai's main office?
Eisai's main headquarters office is located at 4-6-10 Koishikawa, Tokyo, Tokyo Prefecture 112-8088, Japan. This is the company's primary corporate address.
Eisai regional offices
Beyond its headquarters in Tokyo, Eisai has recorded locations in Japan, Canada, France, India, Indonesia, Italy, Norway, Singapore and 4 other countries.
Eisai contact information
The main switchboard for Eisai headquarters can be reached at +81 3 3817 3700. Official website: eisai.com.
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.
Eisai competitors & similar companies
Frequently asked questions
Where is Eisai headquarters?
Eisai's headquarters is located at 4-6-10 Koishikawa, Tokyo, Tokyo Prefecture 112-8088, Japan.
How many offices does Eisai have?
GraphIQ records 28 locations for Eisai across 12+ countries, as of October 2026.
What is Eisai's corporate address?
The corporate headquarters address is 4-6-10 Koishikawa, Tokyo, Tokyo Prefecture 112-8088, Japan.
When was Eisai founded?
Eisai was founded in 1941 and employs approximately 10,917 people.
What is Eisai's phone number?
The main phone number for Eisai headquarters is +81 3 3817 3700.
How many employees does Eisai have?
Eisai has approximately 10,917 employees (GraphIQ estimate, 2026).
Is Eisai a public company?
Yes. Eisai is publicly traded on JPX under the ticker 4523.