Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. John F. Keiser, MD, PHD

Individual provider Clinical Pathology/Laboratory Medicine Physician · NPI 1720194103

Dr. John F. Keiser, MD, PHD is a Clinical Pathology/Laboratory Medicine Physician in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2006.

Licensed in
DC
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

900 23rd St NW
Washington, DC 20037-2342
Phone: (202) 994-3391
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Microbiology Physician (primary) Taxonomy 207ZM0300X · Licence MD15828 (DC)
Clinical Pathology/Laboratory Medicine Physician Taxonomy 207ZP0105X · Licence MD15828 (DC)

Record details

NPI number1720194103
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorNo
NPI enumeratedAugust 21, 2006
Last updated in NPPESSeptember 15, 2020
Certification dateSeptember 11, 2020

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