1. Home
  2. Directory
  3. California
  4. Arcadia
  5. Pathology
  6. NPI Profile

LOREN R AYRES M.D.
NPI 1184693301
Pathology - Anatomic Pathology & Clinical Pathology in Arcadia, CA

Active since March 17, 2006
300 W HUNTINGTON DR, ARCADIA, CA 91007(626) 445-4441 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Loren R Ayres M.d. NPPES

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

LOREN R AYRES M.D. (NPI 1184693301) is an individual anatomic pathology & clinical pathology provider in Arcadia, California, licensed in California (A23918) and active in the NPI registry since March 2006.

NPPES Registry Identity

NPI1184693301
Entity TypeIndividualMale
Primary Taxonomy207ZP0102X
Provider Legal NameLOREN R AYRESCredential: M.D.
Location Address300 W HUNTINGTON DRArcadia, CA 91007-3402
Mailing AddressPo Box 10076Van Nuys, CA 91410-0076 · (805) 578-8300 · Fax (805) 578-8950
Phone(626) 445-4441
Sole ProprietorNo
Enumeration DateMarch 17, 2006
Last NPPES UpdateSeptember 11, 2025
✔ NPI 1184693301 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZP0102X
License✔ Licensed in CA · A23918
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.
Also ListedPathology · CytopathologyTaxonomy 207ZC0500X · License A23918 (CA)
300 W HUNTINGTON DR, Arcadia, CA 91007
Open in Google Maps ↗

Other Identifiers 1

Other00A239180CA · Dhs Ppin

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.

DR. JUAN CARLOS ECHEVERRIA M.D.
Radiology (Vascular & Interventional Radiology)
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 898-8004
DANIEL PIENING MD
Emergency Medicine
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 898-8000
MELODY MELOSERDOFF RD
Dietitian, Registered
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 898-8000
NATALIE Z MILLS M.D.
Pathology (Cytopathology)
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 445-4441
DR. RAHTNA BANERJEE M.D.
Anesthesiology
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 898-8000
ERIC GABRIEL BARRETTO RN
Registered Nurse
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 574-3701
DR. ALAN C SCHLAERTH M.D.
Obstetrics & Gynecology (Gynecologic Oncology)
300 W HUNTINGTON DR, PACIFIC GYNECOLOGIC SPECIALISTS
ARCADIA, CA 91007
Los Angeles County (626) 898-8198
RAVINDRAKUMAR G GURUSWAMY M. D., MPH
Hospitalist
300 W HUNTINGTON DR
ARCADIA, CA 91007
Los Angeles County (626) 795-2244

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 Loren Ayres's NPI number?

The NPI number for Loren Ayres is 1184693301. It was assigned to this individual provider in the NPPES registry on March 17, 2006.

Where is Loren Ayres located?

Loren Ayres practices at 300 W Huntington Dr, Arcadia, CA 91007. The listed phone number is (626) 445-4441.

What is Loren Ayres'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 Loren Ayres was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.