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John B. Classen, MD

Family Doctor, Emergency Medicine Doctor

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Specialties and Licenses

Licensed In
Maryland
NPI Number
1215037676
In the National Registry
20 years (since 2006)

Name, specialties, licenses and address come from the NPPES national provider registry, updated weekly (this record last changed June 2021).

What Family Doctors Commonly Treat

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Medical Disclaimer

The information on this site is for general educational purposes only and is not medical advice, diagnosis, or treatment. Reading this site does not create a doctor–patient relationship. Always consult a qualified healthcare professional for personal guidance. If this is an emergency, call 911. Mentions of medications, devices, or procedures are informational and not endorsements. Full medical disclaimer.