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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. JEFFREY GREGG M.D.
NPI 1689657918
Specialist in Sacramento, CA

Active since November 21, 2005
4400 V ST, PATHOLOGY BUILDING, SACRAMENTO, CA 95817(916) 734-2525 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Jeffrey Gregg M.d. NPPES

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

DR. JEFFREY GREGG M.D. (NPI 1689657918) is an individual specialist in Sacramento, California, licensed in California (G79883) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1689657918
Entity TypeIndividualMale
Primary Taxonomy174400000X
Provider Legal NameDR. JEFFREY GREGGCredential: M.D.
Location Address4400 V ST, PATHOLOGY BUILDINGSacramento, CA 95817-1445
Mailing Address4400 V St, Pathology BuildingSacramento, CA 95817-1445 · (916) 734-2525
Phone(916) 734-2525
Sole ProprietorNo
Enumeration DateNovember 21, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1689657918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in CA · G79883
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.
4400 V ST, Sacramento, CA 95817
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Other Providers at the Same Location NPPES 20

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

GRACE FORTES MONIS MD, PHD
Pathology (Blood Banking & Transfusion Medicine)
4400 V ST, UC DAVIS MEDICAL CENTER, PATHOLOGY
SACRAMENTO, CA 95817
Sacramento County (916) 734-7347
CHRISTINE YEE M.D.
Specialist
4400 V ST, PATH BUILDING
SACRAMENTO, CA 95817
Sacramento County (916) 734-2525
DR. MALATHY KAPALI MD
Specialist
4400 V ST
SACRAMENTO, CA 95817
Sacramento County (916) 734-2525
DR. RUSSELL WALLACE NORDQUIST MD
Student in an Organized Health Care Education/Training Program
4400 V ST
SACRAMENTO, CA 95817
Sacramento County (916) 734-2525
KRISTIN ALEXIS OLSON MD
Pathology (Anatomic Pathology & Clinical Pathology)
4400 V ST
SACRAMENTO, CA 95817
Sacramento County (916) 734-3141
DR. DONGGUANG WEI
Pathology (Anatomic Pathology)
4400 V ST
SACRAMENTO, CA 95817
Sacramento County (916) 734-2525
DR. YASI SAFFARI M.D
Pathology (Anatomic Pathology & Clinical Pathology)
4400 V ST, PATH BUILDING
SACRAMENTO, CA 95817
Sacramento County (916) 734-3331
JOHN RODRIGO
Student in an Organized Health Care Education/Training Program
4400 V ST
SACRAMENTO, CA 95817
Sacramento County (916) 734-2525

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 Jeffrey Gregg's NPI number?

The NPI number for Jeffrey Gregg is 1689657918. It was assigned to this individual provider in the NPPES registry on November 21, 2005.

Where is Jeffrey Gregg located?

Jeffrey Gregg practices at 4400 V St Pathology Building, Sacramento, CA 95817. The listed phone number is (916) 734-2525.

What is Jeffrey Gregg'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 Jeffrey Gregg 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 40 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.