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Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mr. Rodney J. Diffendaffer, RPH

Pharmacist in Aspen, CO · enumerated 2007 · practices at Aspen Centers for Advanced Treatment.

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

National Provider Identifier

1285842393

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Registry record

Entity type Individual (Type 1)
Name Mr. Rodney J. Diffendaffer
Credential RPH
Sex Male
Practice address Aspen, CO, 81611
Phone (970) 925-8837
Fax (970) 925-4233
Enumeration date May 21, 2007
Last updated in NPPES Jul 8, 2007

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

183500000X Pharmacist Pharmacy Service Providers · License 14639 (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.

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Frequently asked questions

Where does Rodney Diffendaffer practice?
The practice location on file with NPPES is in Aspen, CO. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Rodney Diffendaffer?
The National Provider Identifier (NPI) for Rodney Diffendaffer is 1285842393, a Type 1 (individual) record in the CMS NPPES registry.

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