Your data. Your control.​

Control comes with a better understanding of data: The better you understand your data, the better you can take back control of your trial. This is the principle that drives us forward.

Quartesian LLC was formed in January 2003 to provide customized, insightful data to organizations performing clinical studies. Our full technical expertise pairs with our industry experience to provide clinical data services — quickly, efficiently, and at a competitive cost — no matter the size of your business or the phase of your study.

At Quartesian, our onshore and offshore teams deliver expertise, innovation, and efficiency for projects across the world. And our reputation for excellence precedes us — we’ve never issued a change order due to a mistake in estimated cost.

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CDISC Gold Membership
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Medidata Rave Partner
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Medrio Enterprise Partner
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SAS Certification

Our Leaders

Vladimir Mats, Ph.D.

Cofounder and CSO

Cofounder of Quartesian, Vladimir has 20 years of experience in the statistical analysis of pre-clinical and clinical trial data in academia, pharmaceutical, and medical device industries. He has managed statistics, programming, and data management groups in NDA preparation. Vladimir’s specialties include statistical consulting in PK analysis and experimental design.

Soumitra Chowdhury

Cofounder and COO

Soumitra is a cofounder of Quartesian with 18 years of experience in pharmaceutical and market research. Soumitra Chowdhury leads Quartesian’s center of excellence in Bangalore, India, and has held senior positions in: project management, data management, statistical programming, application development, data analysis, and research.

John Xavier

Cofounder and CIO

John is cofounder of Quartesian and an expert in IT processes related to clinical data services. John has 19 years of experience in clinical informatics, biometrics, system administration, and application development related to eClinical technologies.

Aparna “Tanya” Chowdhury, CISA

Chief Audit & Compliance Officer

Tanya has more than 19 years of experience in corporate and internal auditing, operational risk management, regulatory compliance, and internal control. Tanya oversees GCP quality, regulatory compliance, and manages compliance within the contract lifecycle. She also manages annual internal audits, vendor qualifications, and handles external audits.


Princeton, NJ

1 (609) 454 3312
1 (732) 875 0841

Global Locations

AMR Tech Park Building 1A
Second Floor

Hosur Main Road
Karnataka 560 068

PH: +91-80-46471800
FAX: +91-80-41244247

Spacion Business Centre, Level 2
Spacion Towers (Next to Westin Hotel)
Hyderabad 500 081

No. 443 & 445, 4th Floor,
Main Building Phase I

Guna Complex, Anna Salai
Chennai 600 018

No 202, 2nd Floor
Building 4A, Ecospace Tech Park
New Town Action Area II
Kolkata 700 156

42A Tobolskaya Street
Suite 504
Kharkov 61072

172, Antonovicha street
Suite 515
Kyiv 03150

PH: +38 067 607 68 51

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