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

James Zwiebel, MD

Individual provider Hematology & Oncology Physician · NPI 1366868622

James Zwiebel, MD is a Hematology & Oncology Physician in Bethesda, Maryland. Licensed in Maryland. Registered with an NPI since 2014.

Licensed in
MD
In the registry since
2014
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

9609 Medical Center Dr Rm 5W-460 Msc 9739
Bethesda, MD 20892-0001
Phone: (240) 276-6565
Show map & directions

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

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence D0025198 (MD)

Record details

NPI number1366868622
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 11, 2014
Last updated in NPPESMarch 11, 2014

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