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

John Thomas Fleagle, MD

Individual provider Hematology & Oncology Physician · NPI 1346224433

John Thomas Fleagle, MD is a Hematology & Oncology Physician in Boulder, Colorado. Licensed in Colorado. Registered with an NPI since 2005.

Licensed in
CO
In the registry since
2005
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

4715 Arapahoe Ave
Boulder, CO 80303-1385
Phone: (303) 385-2000
Fax: (303) 444-1839
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence 23933 (CO)

Record details

NPI number1346224433
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 1, 2005
Last updated in NPPESDecember 17, 2008
Mailing address7951 E Maplewood Ave, Ste 300, Greenwood Village, CO 80111-4723

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