LOREN R. AYRES M.D. – NPI #1184693301
Pathology

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.

LOREN AYRES is a pathologist located in ARCADIA, CA. NPPES has assigned the NPI number 1184693301 to LOREN AYRES on March 17, 2006. It is a Type-1 NPI, indicating this NPI number is associated with an individual. With multiple taxonomy codes selected, the primary taxonomy selected by this provider is 207ZP0102X from the Health Care Provider Taxonomy code set, which is classified as Pathology, specializing in Anatomic Pathology & Clinical Pathology

The NPI profile was last updated on Sep 11, 2025. Use the NPI data found here to bill health insurance companies, identify providers enrolled in Medicare and Medicaid services or other HIPAA compliant transactions. See the complete NPI profile for LOREN AYRES below.

NPI Profile for
LOREN R. AYRES

NPI Number
1184693301
Enumeration Date

(more than 20 years ago)
Entity Type
Type-1  Individual (Male)
Legal Name
LOREN R. AYRES
Credentials
M.D.
Primary location
300 W HUNTINGTON DR
ARCADIA, CA 91007-3402
Phone: (626) 445-4441 Fax:
Mailing address
PO BOX 10076
VAN NUYS, CA 91410-0076
Phone: (805) 578-8300 Fax: (805) 578-8950
Sole Proprietor
No
Updated
Identifiers

Identifiers for LOREN AYRES

Identifiers are used to associate other provider identifiers such as Medicaid or other insurers (ie:, Blue Cross, Blue Shield, Aetna, Kaiser-Permanente, etc.), with their NPI number. These identifiers can be used in matching an NPI number to an insurer's records. However, not all providers have such numbers and not all providers choose to include them in their NPI information.

DescriptionIssuerStateIdentifier
otherDHS PPINCA00A239180
Taxonomy Code(s)

A taxonomy code is a code that describes the health care service provider's type, classification, and the area of specialization. The primary specialty for this provider is indicated as (Primary) below.

Taxonomy Classification / Specialization State License
207ZP0102X
- Pathology / Anatomic Pathology & Clinical Pathology (Primary)
CA A23918
207ZC0500X
- Pathology / Cytopathology
CA A23918

The taxonomy codes are selected by the provider at the time of NPI registration. Selection of a taxonomy code does not replace any credentialing or validation process that the provider requesting the code should complete.