Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Ryan K Losh, O.D.
Optometrist in Maryville, MO · enumerated 2010.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821309600
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Registry record
Entity type Individual (Type 1)
Name Dr. Ryan K Losh
Credential O.D.
Sex Male
Practice address 109 S Buchanan St, Maryville, MO, 64468
Phone (660) 241-5001
Fax (660) 241-5004
Enumeration date Jun 28, 2010
Last updated in NPPES Jul 27, 2015
Taxonomy & licenses
152WC0802X Corneal and Contact Management Optometrist Eye and Vision Services Providers · License 2010020645 (MO) Secondary
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD 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.
Frequently asked questions
What is the NPI number for Ryan Losh?
The National Provider Identifier (NPI) for Ryan Losh is 1821309600, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ryan Losh practice?
The practice location on file with NPPES is in Maryville, MO. 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 2015-07-27.