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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

STEPHEN C BLACKLOW M.D.
NPI 1982662805
Pathology - Clinical Pathology/Laboratory Medicine in Boston, MA

Active since May 02, 2006
77 AVENUE LOUIS PASTEUR, BOSTON, MA 02115(617) 525-4415 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Stephen C Blacklow M.d. NPPES

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

STEPHEN C BLACKLOW M.D. (NPI 1982662805) is an individual clinical pathology/laboratory medicine provider in Boston, Massachusetts, licensed in Massachusetts (81307) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1982662805
Entity TypeIndividualMale
Primary Taxonomy207ZP0105X
Provider Legal NameSTEPHEN C BLACKLOWCredential: M.D.
Location Address77 AVENUE LOUIS PASTEURBoston, MA 02115-5727
Mailing Address16 Ash StCambridge, MA 02138-4832 · (617) 525-4415
Phone(617) 525-4415
Sole ProprietorNo
Enumeration DateMay 2, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1982662805 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Clinical Pathology/Laboratory MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0105X
License✔ Licensed in MA · 81307
Definition

A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.

77 AVENUE LOUIS PASTEUR, Boston, MA 02115
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Other Providers at the Same Location NPPES 11

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

DR. BRADLEY ALLEN MARON M.D.
Internal Medicine (Cardiovascular Disease)
77 AVENUE LOUIS PASTEUR
BOSTON, MA 02115
Suffolk County (617) 525-4803
DR. NATASHA YURI FRANK MD
Internal Medicine
77 AVENUE LOUIS PASTEUR, NRB 455
BOSTON, MA 02115
Suffolk County (617) 525-4746
P REED LARSEN MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
77 AVENUE LOUIS PASTEUR, HARVARD INSTITUTES OF MEDICINE
BOSTON, MA 02115
Suffolk County (617) 525-5150
DR. DAVE STANLEY MILSTONE M.D.
Pathology (Anatomic Pathology)
77 AVENUE LOUIS PASTEUR, HNRB 730G
BOSTON, MA 02115
Suffolk County (617) 525-4308
DR. BENJAMIN GILBERT NEEL M.D., PH.D.
Internal Medicine
77 AVENUE LOUIS PASTEUR, NRB ROOM 1030
BOSTON, MA 02115
Suffolk County (617) 667-2823
MONICA A GIOVANNI M.S.
Chronic Disease Hospital
77 AVENUE LOUIS PASTEUR, NRB 455
BOSTON, MA 02115
Suffolk County (617) 525-4546
DANIEL R BROWN M.D.
Pediatrics (Pediatric Rheumatology)
77 AVENUE LOUIS PASTEUR, NRB-837
BOSTON, MA 02115
Suffolk County (617) 432-6570
DR. DENNIS J SELKOE MD
Psychiatry & Neurology (Neurology)
77 AVENUE LOUIS PASTEUR, HIM 730
BOSTON, MA 02115
Suffolk County (617) 525-5200

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 Stephen Blacklow's NPI number?

The NPI number for Stephen Blacklow is 1982662805. It was assigned to this individual provider in the NPPES registry on May 2, 2006.

Where is Stephen Blacklow located?

Stephen Blacklow practices at 77 Avenue Louis Pasteur, Boston, MA 02115. The listed phone number is (617) 525-4415.

What is Stephen Blacklow's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Clinical Pathology/Laboratory Medicine, with taxonomy code 207ZP0105X.

When was this NPI record last updated?

The NPPES record for Stephen Blacklow was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.