Dr. Edward Leo Callahan, PHARM.D

Dr. Edward Leo Callahan is a Pharmacist provider (Pharmacist) practicing in Carson, CA, registered in the NPPES registry with NPI 1497974042 since 2007. The credential PHARMD stands for Doctor of Pharmacy.

✓ Active NPI ✓ Valid NPI checksum

NPI	1497974042
Entity type	Individual (Type 1)
Name	Dr. Edward Leo Callahan
Credential	PHARM.D
Sex	Male
Practice address	123 W. WALNUT ST., Carson, CA, 90248
Phone	3105158425
Fax	3105158426
Enumeration date	2007-04-24
Last updated in NPPES	2010-10-15

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
183500000X	Pharmacist	Primary	RPH 26227	CA

PHARMD — Doctor of Pharmacy: A licensed pharmacist with a professional doctorate in pharmacy. About the PHARMD credential

Copy-ready billing details

Provider: Edward Callahan, PHARM.D
NPI: 1497974042
Taxonomy: 183500000X (Pharmacist)
Address: 123 W. WALNUT ST., Carson, CA, 90248

Verify this record

Cross-check NPI 1497974042 against the authoritative CMS record: view Dr. Edward Leo Callahan on the official NPPES registry .

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.

Frequently asked questions

What is the NPI number for Edward Callahan?

The National Provider Identifier (NPI) for Edward Callahan is 1497974042, a Type 1 (individual) record in the CMS NPPES registry.

Where does Edward Callahan practice?

The practice location on file with NPPES is in Carson, CA. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-10-15.