Curriculum Vitae
John Bernard Costello, M.D. Internist and rheumatologist, St. Louis, Missouri. Retired December 2025.
Dr. Costello is the founder of Medical Office Online, Inc., an Internet-based medical software service started in February 1998. He stepped away from management in January 2009 and resumed the role of CEO in May 2016.
Education
Saint Louis Priory School
1965–1971
St. Louis, Missouri
Saint Louis University, School of Arts and Sciences
1971–1974
St. Louis, Missouri
Washington University, Summer Session
1971–1973
School of Arts and Sciences, St. Louis, Missouri. June 1971 – August 1973.
Saint Louis University School of Medicine
1973–1977
St. Louis, Missouri. September 1973 – May 1977.
Washington University, Computer Science
1979
Department of Computer Science, St. Louis, Missouri. June – December 1979.
Maryville University, MBA Program
School of Business, St. Louis, Missouri. Coursework; degree not completed.
Degrees
A.B., Saint Louis University School of Arts and Sciences
August 1974
M.D., Saint Louis University School of Medicine
May 1977
Appointments
Internship, Department of Internal Medicine
1977–1978
Saint Louis University Hospital Group, St. Louis, Missouri
Residency, Department of Internal Medicine
1978–1980
Saint Louis University Hospital Group, St. Louis, Missouri
Fellowship, Rheumatology
1980–1984
Division of Rheumatology, Washington University School of Medicine, St. Louis, Missouri
Division of Rheumatology, University College Hospital, London, England
Division of Rheumatology, University College Hospital, London, England
Board Certification
1978Diplomate, National Board of Medical Examiners
1980Diplomate, American Board of Internal Medicine
1984Diplomate, American Board of Internal Medicine, Subspecialty of Rheumatology
Honors
1973Pi Mu Epsilon National Mathematics Honor Society
1973Beta Beta Beta Biological Honor Society
1973Phi Beta Kappa
1974Magna cum Laude, A.B.
Books
2015The Wikipedia-ed Divorce: An Honest and Concise Tutorial on How to Decide Whether to Divorce or Stay Married or Whom to Marry. John B. Costello, M.D. First edition. Kindle Direct Publishing (Amazon). ISBN 978-1-7349139-2-7.
2026Poetry, In Search of Love. John B. Costello, M.D. Published by John B. Costello, M.D. Print ISBN 978-1-7349139-4-1.
2026Consent of the Governed. Joseph Costello, M.D.; revised by John B. Costello, M.D. Fourth Edition, revised, published July 4, 2026. First written in 1980 as Consent of the People. Published by John B. Costello, M.D. Print ISBN 978-1-7349139-9-6; eBook ISBN 978-1-7349139-8-9.
Articles
Costello, J.B., Poklis, A. Treatment of a Massive Phenobarbital Overdose with a Dopamine Diuresis. Archives of Internal Medicine.
Manian, F.A., Weidner, J., Costello, J.B., Fishbein, D., Dawson, J. Human Ehrlichiosis. Missouri Medicine, October 1989.
Employment
Private Practice, Internal Medicine and Rheumatology
1984 – December 2025
St. Louis, Missouri. Retired December 2025 after 50 years of clinical work.
Hospitalist, Skaggs Hospital
June 2010 – December 2014
Now Cox Health Branson, Branson, Missouri. Placed by Professional Relations Recruiting Service, Dallas, Texas (later sold to Supplemental Physicians, Utah).
Hospitalist, IPC Hospitalist Service
2006 – January 2010
St. Louis County, Missouri
St. Joseph’s Hospital Emergency Room
1980–1982
Kirkwood, Missouri
Hospital and Emergency Coverage, Christian Hospital Northeast and Northwest
1979–1985
St. Louis County, Missouri. Part time.
Entrepreneurship
Medical Office Online, Inc.
February 1998 – present
Founder. Internet-based medical software service. CEO, February 1998 – January 2009, and again from May 2016.
International Health Services, Inc.
1990–1992
CEO. Medical software claims-filing utility. Now closed.
Nonmedical Experience
- Business plan and term sheet development
- Software design documents
- Software training documents
- Medical office implementation of a paperless office
- Medical information technology: current
- Medical information technology: future