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Office
960 N 16th St
Ste 304
Springfield, OR 97477Phone+1 541-744-8682Fax+1 541-744-8608
Education & Training
- University of North Carolina HospitalsResidency, Thoracic Surgery - Integrated, 1986 - 1987
- UPMC Medical Education Prog1986
- Brown UniversityResidency, Surgery, 1979 - 1984
- Brown UniversityResidency, Surgery, 1979
- University of Tennessee Health Science Center College of MedicineClass of 1979
Certifications & Licensure
- OR State Medical License 2011 - 2024
- AK State Medical License 2019 - 2022
- NC State Medical License 2010 - 2022
- VA State Medical License 1994 - 2022
- MI State Medical License 2010 - 2014
- PA State Medical License 1984 - 1996
- American Board of Thoracic Surgery Thoracic and Cardiac Surgery
Awards, Honors, & Recognition
- Fellow (FACS) American College of Surgeons
Clinical Trials
- Randomized On-X Anticoagulation Trial Start of enrollment: 2006 Jun 06
Publications & Presentations
PubMed
- 41 citationsToxoplasmosis in pediatric recipients of heart transplants.Marian G. Michaels, Ellen R. Wald, Frederick J. Fricker, P J del Nido, John M. Armitage
Clinical Infectious Diseases. 1992-04-01 - 79 citationsAnticoagulation and Antiplatelet Strategies After On-X Mechanical Aortic Valve Replacement.John D. Puskas, Marc W. Gerdisch, Dennis Nichols, Lilibeth Fermin, Birger Rhenman
Journal of the American College of Cardiology. 2018-06-19 - 25 citationsClinical experience with the Medtronic-Hall valve prosthesisRobert J. Keenan, John M. Armitage, Alfredo Trento, Ralph D. Siewers, Robert L. Hardesty
The Annals of Thoracic Surgery. 1990-11-01
Press Mentions
- Oklahoma Blood Institute to Provide New and Improved COVID-19 Convalescent PlasmaJanuary 26th, 2022
- Oklahoma Blood Institute Brings Back COVID-19 Antibody Testing for DonorsSeptember 27th, 2021
- OBI Relaunches COVID-19 Antibody TestingSeptember 27th, 2021
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Professional Memberships
- Member
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