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

Dr. Douglas M Tollefsen, MD

Individual provider Hematology (Internal Medicine) Physician · NPI 1679599815

Dr. Douglas M Tollefsen, MD is a Hematology (Internal Medicine) Physician in Saint Louis, Missouri. Licensed in Missouri. Registered with an NPI since 2006.

Licensed in
MO
In the registry since
2006
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

4921 Parkview Pl Fl 7 7TH Fl
Saint Louis, MO 63110-1032
Phone: (314) 362-8808
Fax: (314) 362-8826
Show map & directions

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

Specialties & licences

Hematology (Internal Medicine) Physician (primary) Taxonomy 207RH0000X · Licence R9558 (MO)

Record details

NPI number1679599815
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 14, 2006
Last updated in NPPESJanuary 29, 2018

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