Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Mary Elizabeth Ferris, O.D., F.A.A.O.
Optometrist in Chehalis, WA · enumerated 2007.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1912190786
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Registry record
Entity type Individual (Type 1)
Name Dr. Mary Elizabeth Ferris
Credential O.D., F.A.A.O.
Sex Female
Practice address 145 S Market Blvd, Chehalis, WA, 98532
Phone (360) 506-5544
Fax (360) 506-5547
Enumeration date Aug 24, 2007
Last updated in NPPES Dec 9, 2025
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 Mary Ferris?
The National Provider Identifier (NPI) for Mary Ferris is 1912190786, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Ferris practice?
The practice location on file with NPPES is in Chehalis, WA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-12-09.