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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 FRENCH LOOMIS M.D.
NPI 1689624744
Pathology - Anatomic Pathology & Clinical Pathology in Marshall, MI

Active since May 11, 2006
603 N KALAMAZOO AVE, MARSHALL, MI 49068(269) 781-4560(269) 781-3659 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. Karl French Loomis M.d. NPPES

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

DR. KARL FRENCH LOOMIS M.D. (NPI 1689624744) is an individual anatomic pathology & clinical pathology provider in Marshall, Michigan, licensed in Michigan (4301045613) and active in the NPI registry since May 2006.

NPPES Registry Identity

NPI1689624744
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameDR. KARL FRENCH LOOMISCredential: M.D.
Location Address603 N KALAMAZOO AVEMarshall, MI 49068-1076
Mailing Address603 N Kalamazoo AveMarshall, MI 49068-1076 · (269) 781-4560 · Fax (269) 781-3659
Phone(269) 781-4560
Fax(269) 781-3659
Sole ProprietorNo
Enumeration DateMay 11, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1689624744 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in MI · 4301045613
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.
603 N KALAMAZOO AVE, Marshall, MI 49068
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Other Identifiers 1

Medicaid1846053MI

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 Loomis's NPI number?

The NPI number for Karl Loomis is 1689624744. It was assigned to this individual provider in the NPPES registry on May 11, 2006.

Where is Karl Loomis located?

Karl Loomis practices at 603 N Kalamazoo Ave, Marshall, MI 49068. The listed phone number is (269) 781-4560.

What is Karl Loomis's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

When was this NPI record last updated?

The NPPES record for Karl Loomis 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 41 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.