Our Team

Our Leadership Team

A medical company is only as good as the team it builds and at Versant Diagnostics, we’re assembling the best of the best in digital pathology. We’re led by seasoned professionals with decades of medical experience and we’re constantly adding to our team with pathologists working on the leading edge of medicine.

Physicians

  • Ven Aduana, M.D.
    Ven Aduana, M.D.
    Chairman, CMO

    Ven Aduana, M.D.

    Chairman, CMO
    Dr. Aduana is Chairman, Chief Medical Officer, and Co-Founder of Versant Diagnostics. Prior to Versant he was President and CEO at Alliance Pathology Consultants. Dr. Aduana is a medical leader within Amita (now Ascension) Health, and nationally recognized for adoption and implementation of Digital Pathology and Precision Medicine. He is an expert in Breast Pathology, Digital Pathology, Gastrointestinal Pathology, Precision Medicine, Surgical Oncologic Pathology, and Surgical Pathology. Dr. Aduana is board certified in Anatomic and Clinical Pathology and holds a medical degree from the University of the East College of Medicine and fellowship and residency at the University of Illinois College of Medicine at Chicago.
  • Peter Bernhardt, M.D.
    Peter Bernhardt, M.D.
    Founding Member

    Peter Bernhardt, M.D.

    Founding Member

    Dr. Bernhardt is a Co-Founder of Versant Diagnostics. He is a pathologist in Elk Grove Village, Illinois and is affiliated with multiple hospitals in the area, including Amita Health Alexian Brothers Medical Center Elk Grove Village and Amita Health Hoffman Estates. Dr. Bernhardt is an expert in Anatomic Pathology, Breast Pathology, Clinical Pathology, Flow Cytometry, Hematopathology, and Molecular Pathology. He is board certified in Anatomic and Clinical Pathology and holds a medical degree from the Duke University
    School of Medicine.

  • Frederick Ng, M.D.
    Frederick Ng, M.D.
    Founding Member

    Frederick Ng, M.D.

    Founding Member

    Dr. Ng is a Co-Founder of Versant Diagnostics. He is a pathologist in Elk Grove Village, Illinois and is affiliated with Amita Health Alexian Brothers Medical Center Elk Grove Village. He is an expert in Cytopathology, Surgical Pathology, Breast Pathology and Gynecological Pathology. Dr. Ng is board certified in Anatomic and Clinical Pathology and Cytopathology and holds a medical degree from the De
    La Salle University College of Medicine.

  • Anoja S Attele, M.D.
    Anoja S Attele, M.D.
    Physician

    Anoja S Attele, M.D.

    Physician

    Dr. Attele is a pathologist in Chicago, Illinois and is affiliated with multiple hospitals in the area, including Community First Medical Center and Amita Saints Mary and Elizabeth Medical Center Chicago. She is an expert in Anatomic Pathology, Clinical Pathology, and Cytopathology. Dr. Attele holds a medical degree from the University of Illinois College of Medicine at Chicago.

  • Marlyn C Ciesla, M.D.
    Marlyn C Ciesla, M.D.
    Physician

    Marlyn C Ciesla, M.D.

    Physician

    Dr. Ciesla is a pathologist in Hoffman Estates, Illinois and is affiliated with multiple hospitals in the area, including Amita Health Alexian Brothers Medical Center Elk Grove Village and Amita Health Hoffman Estates. She is an expert in Anatomic Pathology, Clinical Pathology and Cytopathology. Dr. Ciesla holds a medical degree from the University of South Carolina School of Medicine.

  • Maria C Cleto-Quiaoit, M.D.
    Maria C Cleto-Quiaoit, M.D.
    Physician

    Maria C Cleto-Quiaoit, M.D.

    Physician

    Dr. Cleto-Quiaoit is a pathologist in Elk Grove Village, Illinois and is affiliated with Amita Health Alexian Brothers Medical Center Elk Grove Village. She is an expert in Anatomic Pathology and Clinical Pathology. Dr. Cleto-Quiaoit holds a medical degree from the University of the Philippines College of Medicine.

  • Laurie Eisengart, M.D
    Laurie Eisengart, M.D
    Physician

    Laurie Eisengart, M.D

    Physician

    Dr. Eisengart is a pathologist in Hoffman Estates, Illinois and is affiliated with multiple hospitals in the area, including Amita Health Alexian Brothers Medical Center Elk Grove Village and Amita Health Hoffman Estates.  She is an expert in Molecular Pathology, Precision Medicine, and Surgical Pathology. Dr. Eisengart is board certified in Anatomic and Clinical Pathology and holds a medical degree from The Ohio State University College of Medicine.

  • Keith Kaplan, M.D.
    Keith Kaplan, M.D.
    Physician

    Keith Kaplan, M.D.

    Physician

    Dr. Kaplan is a pathologist in Hoffman Estates, Illinois and is affiliated with multiple hospitals in the area, including Amita Health Alexian Brothers Medical Center Elk Grove Village and Amita Health Hoffman Estates.  He is an expert in Blood Banking & Transfusion Medicine, Cytopathology, Gastrointestinal & Hepatobiliary Pathology, and Surgical Pathology. Dr. Kaplan is board certified in Anatomic and Clinical Pathology and holds a medical degree from the Northwestern University Feinberg School of Medicine. Dr. Kaplan has published the online blog tissuepathology.com since 2007.

  • Sangeeta Mehendale, M.D.
    Sangeeta Mehendale, M.D.
    Physician

    Sangeeta Mehendale, M.D.

    Physician

    Dr. Mehendale is a pathologist in Chicago, Illinois and is affiliated with multiple hospitals in the area, including Amita Health Resurrection Medical Center Chicago and Amita Saints Mary and Elizabeth Medical Center Chicago. She is an expert in Anatomic Pathology, Clinical Pathology, and Hematopathology. Dr. Mehendale holds a medical degree from the Lokmanya Tilak Municipal General Hospital and Medical College (Sion hospital).

  • Maria McIntire, M.D.
    Maria McIntire, M.D.
    Physician

    Maria McIntire, M.D.

    Physician

    Dr. McIntire is a pathologist in Hoffman Estates, Illinois and is affiliated with Amita Health Hoffman Estates.  She is an expert in Surgical Pathology and Gastrointestinal Pathology. Dr. McIntire is board certified in Anatomic and Clinical Pathology, holds a medical degree from the Rush University Rush Medical College and was chosen for a Fellowship in Gastrointestinal and Liver Pathology at Harvard’s
    Brigham and Women’s Hospital.

  • Anita L Ong, M.D.
    Anita L Ong, M.D.
    Physician

    Anita L Ong, M.D.

    Physician
  • Pepito P Parayno, M.D.
    Pepito P Parayno, M.D.
    Physician

    Pepito P Parayno, M.D.

    Physician

    Dr. Parayno is a pathologist in Elk Grove Village, Illinois and is affiliated with multiple hospitals in the area, including Amita Health Alexian Brothers Medical Center Elk Grove Village and Amita Health Hoffman Estates. He is an expert in Anatomic Pathology and Clinical Pathology. Dr. Parayno holds a medical degree from the University of the East College of Medicine.

  • Natasha Pello, M.D.
    Natasha Pello, M.D.
    Physician

    Natasha Pello, M.D.

    Physician

    Dr. Pello is a pathologist in Elgin, Illinois and is affiliated with AMITA Health St. Joseph Hospital Elgin. She is an expert in Anatomic Pathology, Clinical Pathology, and Cytopathology. Dr. Pello holds a medical degree from the St. Petersburg State Medical Academy.

  • Omid Rouhi, M.D.
    Omid Rouhi, M.D.
    Physician

    Omid Rouhi, M.D.

    Physician
  • Ofilia Ruiz, M.D.
    Ofilia Ruiz, M.D.
    Physician

    Ofilia Ruiz, M.D.

    Physician

    Dr. Ruiz is a pathologist in Elk Grove Village, Illinois and is affiliated with multiple hospitals in the area, including Amita Health Alexian Brothers Medical Center Elk Grove Village and Amita Health Hoffman Estates. She is an expert in Anatomic Pathology, Clinical Pathology, and Cytopathology. Dr. Ruiz holds a medical degree from the University of the East College of Medicine.

Executive Team

  • Ven Aduana, M.D.
    Ven Aduana, M.D.
    Chairman, CMO

    Ven Aduana, M.D.

    Chairman, CMO

    Dr. Aduana is Chairman, Chief Medical Officer, and Co-Founder of Versant Diagnostics. Prior to Versant he was President and CEO at Alliance Pathology Consultants. Dr. Aduana is a medical leader within Amita (now Ascension) Health, and nationally recognized for adoption and implementation of Digital Pathology and Precision Medicine. He is an expert in Breast Pathology, Digital Pathology,
    Gastrointestinal Pathology, Precision Medicine, Surgical Oncologic Pathology, and Surgical Pathology. Dr. Aduana is board certified in Anatomic and Clinical Pathology and holds a medical degree from the University of the East College of Medicine and fellowship and residency at the University of Illinois College of Medicine at Chicago.

  • Jim Billington
    Jim Billington
    CEO

    Jim Billington

    CEO

    Mr. Billington is CEO and Co-Founder at Versant Diagnostics. Previously he was Co-Founder, Board of Directors, and Chief Operating Officer at American Esoteric Laboratories. Prior, he served as Senior Vice President of Operations, Chief Operating Officer, and Board of Directors (ex officio) at AmeriPath. He was Co-Founder, President, and Chief Operating Officer at Inform DX that merged with PATH. He was Vice President of Finance and Chief Financial Officer for the Western Division of LabCorp. Mr. Billington served as an Adjunct Professor of Entrepreneurship at Bradley University between 2013 and 2018 and began his career as a Certified Public Accountant for Coopers & Lybrand.

  • Rob Albert
    Rob Albert
    Development

    Rob Albert

    Development

    Mr. Albert is Chief Development Officer at Versant Diagnostics. Prior to Versant, he was the Vice President and General Manager for the Northwest Region of LabCorp. Mr. Albert has extensive experience in previous roles as Senior Vice President and Chief Operating Officer in acquisition and efficiency creation for Dynacare Clinical Labs, Pathology, Inc., LabCorp, and Accumen, (formerly aLabs). He was Laboratory Acquisition Consultant for Goldtschmidtstr in Hamburg, Germany and Executive Management Consultant for Inform Diagnostics in Irving, Texas.

  • John Horton
    John Horton
    Sales & Marketing

    John Horton

    Sales & Marketing

    Mr. Horton is Vice President of Sales and Marketing at Versant Diagnostics. Before joining Versant, he was Chief Commercial Officer at Baylor Genetics Intelligence Platform. Prior, he was the Senior Area Director for the Western Region of Progenity, Inc. He has held sales leadership roles at QIAGEN and Digene, Inc. Mr. Horton began his career in the lab industry at AmeriPath and Olympus America, Inc.

  • Alex Stefanowicz
    Alex Stefanowicz
    Human Resources

    Alex Stefanowicz

    Human Resources

    Mr. Stefanowicz is Vice President of Human Resources and Corporate Services, and Chief Compliance Officer at Versant Diagnostics. Previously, he was Chief Human Resources Officer and Compliance Officer at TREND Healthcare. His experience also includes Co-Founder and Vice president of Operations and Human Resources at Integrated Lab Solutions, Vice President of Human Resources at USMD Health System, Director of Human Resources and Corporate Compliance at American Esoteric Laboratories, and Director of Human Resources at AmeriPath. Mr. Stefanowicz is Co-Inventor of U.S. Patent 9,999,888 for a medical specimen container integral in automated laboratory toxicology testing. His diverse background extends beyond healthcare to include technology and manufacturing organizations as well as hospitality at The Ritz-Carlton Hotel Company.

  • Allen Whitehead
    Allen Whitehead
    CFO

    Allen Whitehead

    CFO

    Mr. Whitehead is a Certified Public Accountant and the Chief Financial Officer at Versant Diagnostics. He spent nearly a decade as Director of Finance & Controller at ProPath before joining Versant. Mr. Whitehead also held Senior Financial Analyst positions at several organizations and built platforms to improve effectiveness in workflow and maximize revenue potential.

Board of Directors

  • Ven Aduana, M.D.
    Ven Aduana, M.D.
    Chairman, CMO

    Ven Aduana, M.D.

    Chairman, CMO

    Dr. Aduana is Chairman, Chief Medical Officer, and Co-Founder of Versant Diagnostics. Prior to Versant he was President and CEO at Alliance Pathology Consultants. Dr. Aduana is a medical leader within Amita (now Ascension) Health, and nationally recognized for adoption and implementation of Digital Pathology and Precision Medicine. He is an expert in Breast Pathology, Digital Pathology,
    Gastrointestinal Pathology, Precision Medicine, Surgical Oncologic Pathology, and Surgical Pathology. Dr. Aduana is board certified in Anatomic and Clinical Pathology and holds a medical degree from the University of the East College of Medicine and fellowship and residency at the University of Illinois College of Medicine at Chicago.

  • Jim Billington
    Jim Billington
    CEO

    Jim Billington

    CEO

    Mr. Billington is CEO and Co-Founder at Versant Diagnostics. Previously he was Co-Founder, Board of Directors, and Chief Operating Officer at American Esoteric Laboratories. Prior, he served as Senior Vice President of Operations, Chief Operating Officer, and Board of Directors (ex officio) at AmeriPath. He was Co-Founder, President, and Chief Operating Officer at Inform DX that merged with PATH. He was Vice President of Finance and Chief Financial Officer for the Western Division of LabCorp. Mr. Billington served as an Adjunct Professor of Entrepreneurship at Bradley University between 2013 and 2018 and began his career as a Certified Public Accountant for Coopers & Lybrand.

  • Peter Bernhardt, M.D.
    Peter Bernhardt, M.D.
    Founding Member

    Peter Bernhardt, M.D.

    Founding Member

    Dr. Bernhardt is a Co-Founder of Versant Diagnostics. He is a pathologist in Elk Grove Village, Illinois and is affiliated with multiple hospitals in the area, including Amita Health Alexian Brothers Medical Center Elk Grove Village and Amita Health Hoffman Estates. Dr. Bernhardt is an expert in Anatomic Pathology, Breast Pathology, Clinical Pathology, Flow Cytometry, Hematopathology, and Molecular Pathology. He is board certified in Anatomic and Clinical Pathology and holds a medical degree from the Duke University
    School of Medicine.

  • Brian Carr
    Brian Carr
    Board Director

    Brian Carr

    Board Director

    Mr. Carr is a Board Director and Co-Founder of Versant Diagnostics. He serves on multiple boards, including Igenomix, Protypia, and SBA Communications Corp. Mr. Carr was Co-Founder, Chairman, and CEO of Regional Diagnostic Laboratories; Co-Founder and CEO of OralDNA Labs; and Co-Founder, Chairman, and CEO of American Esoteric Laboratories. Mr. Carr was President and a member of the
    Board of Directors at AmeriPath.

  • Jasmine Chen
    Jasmine Chen
    Board Director

    Jasmine Chen

    Board Director
  • Scott Mraz
    Scott Mraz
    Board Director

    Scott Mraz

    Board Director
  • Mitch Olan
    Mitch Olan
    Board Director

    Mitch Olan

    Board Director
  • Rob Reistetter
    Rob Reistetter
    Board Director

    Rob Reistetter

    Board Director