Dr. John Anthony Backus, PHARMD

Dr. John Anthony Backus is a Pharmacist provider (Pharmacist) practicing in Eureka, CA, registered in the NPPES registry with NPI 1104158260 since 2010. The credential PHARMD stands for Doctor of Pharmacy. Practices at Eureka Pharmacy LLC (listed at the same practice address in NPPES).

✓ Active NPI ✓ Valid NPI checksum

NPI	1104158260
Entity type	Individual (Type 1)
Name	Dr. John Anthony Backus
Credential	PHARMD
Sex	Male
Practice address	525 5TH ST, Eureka, CA, 95501
Phone	7074431614
Enumeration date	2010-01-31
Last updated in NPPES	2010-01-31

Taxonomy & licenses

Taxonomy code	Specialty	Primary	License	State
183500000X	Pharmacist	Primary	62418	CA

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

Copy-ready billing details

Provider: John Backus, PHARMD
NPI: 1104158260
Taxonomy: 183500000X (Pharmacist)
Address: 525 5TH ST, Eureka, CA, 95501

Other providers at this practice address

NPI	Name	Type	Specialty	Location
1942327119	Patrick Cloney	Individual	Pharmacist	Eureka, CA
1669595682	William Tomlin	Individual	Pharmacist	Eureka, CA
1902307127	Kelly Sams	Individual	Pharmacist	Eureka, CA
1235607227	Ronald Rogers	Individual	Pharmacist	Eureka, CA
1841978509	Eureka Pharmacy LLC	Organization	Community/Retail Pharmacy	Eureka, CA

Verify this record

Cross-check NPI 1104158260 against the authoritative CMS record: view Dr. John Anthony Backus 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 specialty is John Backus?

John Backus is registered in NPPES with the primary taxonomy of Pharmacist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2010-01-31.