Keith Johnstone, MD
Cardiology
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Credentials & Recognition
Specialties
NPI sub-specialties
Internal Medicine, Cardiovascular Disease207RC0000X
Internal Medicine, Interventional Cardiology207RI0011X
Practice Signals
Editorial signals beyond credentials. Patient transparency over opacity. See methodology.
Mid-Level (PA/NP) Use
Doctor-led visits
Years in Practice
21+ years
Estimated from NPI enumeration date
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