Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dr. Christine Louise Mayer, O.D.
Optometrist in Vacaville, CA · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1689645723
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Registry record
Entity type Individual (Type 1)
Name Dr. Christine Louise Mayer
Credential O.D.
Sex Female
Practice address 2581 Nut Tree Rd, Suite C, Vacaville, CA, 95687
Phone (707) 447-1332
Fax (707) 447-4894
Enumeration date Jan 27, 2006
Last updated in NPPES Mar 7, 2013
Taxonomy & licenses
OD · Doctor of Optometry: A licensed optometrist providing primary vision care, eye exams, and corrective lenses.
About the OD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| SD0070040 | Medicaid | CA | - |
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
Where does Christine Mayer practice?
The practice location on file with NPPES is in Vacaville, CA. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Christine Mayer?
The National Provider Identifier (NPI) for Christine Mayer is 1689645723, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all → Kathleen Kopecko Optometrist · Vacaville, CA NPI 1194796235 Randy Johnson General Practice Dentistry · Vacaville, CA NPI 1780758979 Brian Nicoll Periodontics · Vacaville, CA NPI 1053471706 K J Kopecko O D Christine L Mayer O D Optometry Corp Optometrist · Vacaville, CA NPI 1932220324 Tia L. Horie Optometry Optometrist · Vacaville, CA NPI 1891247862
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2013-03-07.