Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Cassidy Claassen, MD

Individual provider Hospitalist Physician · NPI 1477796696

Cassidy Claassen, MD is an Infectious Disease in Baltimore, Maryland. Graduated from University of Maryland School of Medicine in 2009, 17 years ago. Practices with University of Maryland Physicians PA, a 390-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
17
Trained at
University of Maryland School of Medicine
Licensed in
MD
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

22 S Greene St
Baltimore, MD 21201-1544
Phone: (410) 328-2882
Fax: (410) 328-2977
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence D74704 (MD)

Record details

NPI number1477796696
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 17, 2009
Last updated in NPPESFebruary 1, 2013
Mailing addressPo Box 64442, Baltimore, MD 21264-4442

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINFECTIOUS DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice University Of Maryland Physicians Pa — 390 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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