Welcome to GeoSera

The Catalyst to Drug Development

Clinical trials do not fail on paper. They fail in execution.

Experienced

Delegate the design, execution, and oversight of your clinical trials to a team with 25+ years of hands-on drug-development experience.

Reliable

A proven delivery record built on clear plans, transparent communication, and accountable ownership of our responsibilities.

Satisfied Clients

Strong record of repeat business due to satisfied customers along with an expansive network of industry colleagues who collaborate and refer GeoSera to pharma and biotech companies.

Diverse Knowledge

Operational expertise across Phase I–IV and multiple therapeutic areas, supporting both large and small pharma and biotech companies.

About GeoSera

At GeoSera, we embed senior operators directly into sponsor teams. We roll up our sleeves and bring speed, accountability, and executional focus from pre-IND through NDA. Unlike strategy-only firms, we drive results by being hands-on in the work that matters most

The GeoSera

Competitive Advantage;

  • GeoSera allows companies to achieve their goals without financial commitment of permanent employees
  • The contracts and scopes of work for GeoSera are tailored to fit the needs of the client, not vice versa

Clients Say

See more for testimonials 

    Sean Gill

    I had the pleasure to work with John Diaz at Merck in Merck’s Clinical Pharmacology department. John was an energetic, knowledgeable colleague who learned and followed the Merck processes quickly and effectively. I highly recommend John for any position within Research and Development and I hope that I get to work with John again in the near future.

      Maciej Gasior

      I had the pleasure to work with John Diaz on three protocols in the Medical Monitor – Operations Manager relationship. He was enthusiastic, diligent and proactive throughout his participation in the oversight of each clinical trial on which we collaborated. It was my pleasure to work with John and I look forward to working with him again.

        Raul P. Lima

        I had the pleasure to hire John to take over one of development programs under my responsibility. I delegated all operational details of this program such as budgeting, vendor and project management as well as delegating strategic responsibilities to John. I was confident that John could take ownership of and execute all tasks related to leading the program. I thoroughly look forward to working with John Carlos Diaz again and highly recommend John Carlos to lead any drug development team or program.

          Erika Parker Zavod

          John Diaz reported directly to me from 2012 to 2015. I was confident that John could easily handle the responsibilities of vendor and budget oversight for clinical trials. John manage complex protocols while coordinating communication and trial related information across multiple departments with minimal supervision. During an Advisory Board meeting, John was praised for how efficient the clinical trials that were under his management were conducted. John is a strong leader, a diligent worker and has knowledge of many therapeutic areas and functions within clinical research. I strongly recommend John.