Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ms. Diana Faye Ryan, MSBS
Counselor in Altus, OK · enumerated 2011.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1891092888
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Registry record
Entity type Individual (Type 1)
Name Ms. Diana Faye Ryan
Credential MSBS
Sex Female
Practice address 319 N Hudson St, Altus, OK, 73521
Phone (580) 482-6296
Enumeration date Feb 28, 2011
Last updated in NPPES Feb 28, 2011
Taxonomy & licenses
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.
Frequently asked questions
What is the NPI number for Diana Ryan?
The National Provider Identifier (NPI) for Diana Ryan is 1891092888, a Type 1 (individual) record in the CMS NPPES registry.
Where does Diana Ryan practice?
The practice location on file with NPPES is in Altus, OK. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2011-02-28.