DR. DOUGLAS M TOLLEFSEN (MD) – Hematology (Internal Medicine) Physician, NPI 1679599815

DR. DOUGLAS M TOLLEFSEN (MD) is a healthcare provider. based in Saint louis, Missouri. specializing in Hematology (Internal Medicine) Physician. They hold the professional credentials MD. They hold a License No. R9558 (MO). The NPI Number for DR. DOUGLAS M TOLLEFSEN (MD) is 1679599815

Main info

Male
Name
DR. DOUGLAS M TOLLEFSEN (MD)
NPI
1679599815
Phone
(314) 362-8808
Address
4921 PARKVIEW PL FL 7
Enumeration Date
14 July 2006
Last Update Date
29 January 2018
Data current as of
19 May 2026

Profile Insights

NPPES metrics only — not quality of care.

Methodology
Experience52
Completeness75
Years active:19State licenses:1Digital endpointsOther names

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Provider Addresses for DR. DOUGLAS M TOLLEFSEN (MD)

  • Parkview Place, WashU, City of Saint Louis, Missouri, 63110, United States

    7TH FL

    SAINT LOUIS, MO 631101032

    Phone: (314) 362-8808

    Fax: (314) 362-8826

    Type: Location

  • 660, South Euclid Avenue, Central West End, City of Saint Louis, Missouri, 63110, United States

    C B 8125

    SAINT LOUIS, MO 631101010

    Phone: (314) 362-8808

    Fax: (314) 362-8826

    Type: Mailing

NPPES updates history

No NPPES updates recorded for this provider.

Prescription Activity

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Open Payments (CMS)

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Medicare Enrollment & Revalidation

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Medicare Utilization (FFS)

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No Medicare fee-for-service utilization data available for this provider in our database.

Insurance plans in this area (ZIP 63110)

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Frequently asked questions

What number should I use to identify DR. DOUGLAS M TOLLEFSEN (MD) for billing?
Administrative and clinical systems typically use NPI 1679599815 for DR. DOUGLAS M TOLLEFSEN (MD).
Should I treat DR. DOUGLAS M TOLLEFSEN (MD) as an active provider?
Patients and plans typically see DR. DOUGLAS M TOLLEFSEN (MD) as active in the national extract.
Which specialty label fits DR. DOUGLAS M TOLLEFSEN (MD)?
NPPES ties DR. DOUGLAS M TOLLEFSEN (MD) to Hematology (Internal Medicine) Physician in the taxonomy section. Clinical services aligned with this taxonomy classification.
What city is tied to DR. DOUGLAS M TOLLEFSEN (MD)?
The directory associates DR. DOUGLAS M TOLLEFSEN (MD) with Saint Louis, Missouri. Check all listed addresses for suites or satellite offices.
What is the difference between NPI and a medical license?
An NPI is a federal identifier; a medical license is issued by a state and governs where someone may practice.

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