Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mr. Arthur H. Siegle, RPH

Pharmacist in Boulder, CO · enumerated 2007.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1164556148

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)

Name Mr. Arthur H. Siegle

Credential RPH

Sex Male

Practice address 1333 Iris Ave, Iris Pharmacy, Boulder, CO, 80304

Phone (303) 413-6288

Fax (303) 413-6291

Enumeration date Mar 14, 2007

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 10875 (CO) Primary

RPH · Registered Pharmacist: A licensed pharmacist registered with a state board of pharmacy. About the RPH credential

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 → Validate an NPI →

Frequently asked questions

How do I verify Arthur Siegle's NPI record?

Cross-check NPI 1164556148 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1164556148 active?

Yes, as of the latest NPPES snapshot, NPI 1164556148 is active (record last updated 2007-07-08).

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.