Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Leigh Ann Mast, O.D.
Optometrist in Federal Way, WA · enumerated 2012.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689939456
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Registry record
Entity type Individual (Type 1)
Name Leigh Ann Mast
Credential O.D.
Sex Female
Practice address 2317 Sw 320th St, Suite A, Federal Way, WA, 98023
Phone (253) 952-5547
Enumeration date Jul 9, 2012
Last updated in NPPES Nov 19, 2014
Taxonomy & licenses
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 Leigh Mast?
The National Provider Identifier (NPI) for Leigh Mast is 1689939456, a Type 1 (individual) record in the CMS NPPES registry.
Where does Leigh Mast practice?
The practice location on file with NPPES is in Federal Way, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → David B Souza Optometrist · Federal Way, WA NPI 1720132111 Ming-Li Kuo Endodontics · Federal Way, WA NPI 1366589251 Albert Kim Endodontics · Federal Way, WA NPI 1952423329 Thompson Foot and Ankle Clinic Inc Podiatric Clinic/Center · Federal Way, WA NPI 1043629652 Leigh Mast, Od, Pllc Optometrist · Federal Way, WA NPI 1124425111
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2014-11-19.