John Leighton: Email & Phone Number

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Former Director, Division of Hematology Oncology Toxicology, CDER/FDA at Freelance|Rockville, Maryland, United States

Position:

Former Director, Division of Hematology Oncology Toxicology, CDER/FDA at Freelance

Location:

Rockville, Maryland, United States

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Last updated: 2026-07-06

Updated: 2026-07-06

Found email addresses for John Leighton:

Business emails:

j***@gmail.com

Personal emails:

j***@gmail.com,

j***@yahoo.com,

l***@hotmail.com,

l***@fda.gov

Found phones for John Leighton:

+1-323-***-**01,

+1-323-***-**41

A different John Leighton?

Work Experience

Former Director, Division of Hematology Oncology Toxicology, CDER/FDA at Freelance

May 2025 - Current

Retired at US FDA

Jan 2024 - Current

Director, Division of Hematology Oncology Toxicology at FDA

- Jan 2024

John Leighton started working in 2024, then the employee has changed 2 companies and 2 jobs. On average, John Leighton works for one company for 1 year 11 months.

Their professional focus is Elemental Impurities Q3D, Oncology, and Pharmaceutical Sciences across 3 core areas.

Education

Doctor of Philosophy - PhD at University of Illinois Urbana-Champaign

University of Colorado Denver

Frequently Asked Questions

What is John Leighton's email address?

SignalHire found verified email addresses for John Leighton, both business and personal. Their business email is j***@gmail.com, and personal emails include j***@gmail.com, j***@yahoo.com, and l***@hotmail.com.

What is John Leighton's phone number?

SignalHire found multiple verified phone numbers for John Leighton: +1-323-***-**01, and +1-323-***-**41.

How do I contact John Leighton at Freelance?

You can reach John Leighton through SignalHire by unlocking their verified email and direct phone number (free signup, no credit card needed). SignalHire is the fastest route if you need their contact details immediately.

What is John Leighton's professional background?

They have held roles including Retired, and Director, Division of Hematology Oncology Toxicology at companies such as US FDA, and FDA. Their education includes Doctor of Philosophy - PhD from University of Illinois Urbana-Champaign, and University of Colorado Denver.

Is John Leighton's contact information up to date?

Yes. John Leighton's SignalHire profile was last updated on 6 July 2026, reflecting their current position as Former Director, Division of Hematology Oncology Toxicology, CDER/FDA at Freelance.

John Leighton Namesakes

Name

Company

Position

John Leighton

Windward Capital Advisors, L.L.C.

President and Founder

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