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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. KARL PROPPE MD
NPI 1831197102
Specialist in Cambridge, MA

Active since July 12, 2005
640 MEMORIAL DR, CAMBRIDGE, MA 02139(781) 255-0555(781) 255-0594 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Karl Proppe Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. KARL PROPPE MD (NPI 1831197102) is an individual specialist in Cambridge, Massachusetts, licensed in Massachusetts (37618) and active in the NPI registry since July 2005.

NPPES Registry Identity

NPI1831197102
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. KARL PROPPECredential: MD
Location Address640 MEMORIAL DRCambridge, MA 02139-4853
Mailing Address640 Memorial DrCambridge, MA 02139-4853 · (781) 255-0555 · Fax (781) 255-0594
Phone(781) 255-0555
Fax(781) 255-0594
Sole ProprietorNo
Enumeration DateJuly 12, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1831197102 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in MA · 37618
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
640 MEMORIAL DR, Cambridge, MA 02139
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Other Identifiers 1

Medicaid6169767MA

Other Providers at the Same Location NPPES 6

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

PATHOLOGY SERVICES INC
Specialist
640 MEMORIAL DR
CAMBRIDGE, MA 02139
Middlesex County (781) 255-0555
DR. ANNE ELIZABETH ALLAN MD
Specialist
640 MEMORIAL DR
CAMBRIDGE, MA 02139
Middlesex County (617) 225-2526
DR. TERENCE HARRIST MD
Specialist
640 MEMORIAL DR
CAMBRIDGE, MA 02139
Middlesex County (781) 255-0555
DR. TAO YANG
Specialist
640 MEMORIAL DR
CAMBRIDGE, MA 02139
Middlesex County (781) 255-0555
PATHOLOGY SERVICES INC
Clinical Medical Laboratory
640 MEMORIAL DR
CAMBRIDGE, MA 02139
Middlesex County (781) 255-0555
DR. SOOK BIN WOO
Specialist
640 MEMORIAL DR
CAMBRIDGE, MA 02139
Middlesex County (781) 255-0555

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Karl Proppe's NPI number?

The NPI number for Karl Proppe is 1831197102. It was assigned to this individual provider in the NPPES registry on July 12, 2005.

Where is Karl Proppe located?

Karl Proppe practices at 640 Memorial Dr, Cambridge, MA 02139. The listed phone number is (781) 255-0555.

What is Karl Proppe's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

When was this NPI record last updated?

The NPPES record for Karl Proppe was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 26 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.