Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Ann Chang
Optometrist in Menlo Park, CA · enumerated 2015.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1114300084
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Registry record
Entity type Individual (Type 1)
Name Ann Chang
Sex Female
Practice address 925 Hamilton Ave, Menlo Park, CA, 94025
Phone (650) 521-5440
Enumeration date Jul 9, 2015
Last updated in NPPES Mar 20, 2022
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 Ann Chang?
The National Provider Identifier (NPI) for Ann Chang is 1114300084, a Type 1 (individual) record in the CMS NPPES registry.
Where does Ann Chang practice?
The practice location on file with NPPES is in Menlo Park, CA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Debra St Claire Internal Medicine Physician · Menlo Park, CA NPI 1205974409 Pamela Twu Family Medicine Physician · Menlo Park, CA NPI 1538602420 Joanna Morgan Clinical Psychologist · Menlo Park, CA NPI 1962947424 Julianne Kanzaki Registered Dietitian · Menlo Park, CA NPI 1679066179 Alia Parvez Orthopedic Physical Therapist · Menlo Park, CA NPI 1871053603 Shawndell Clay Clinical Psychologist · Menlo Park, CA NPI 1255980017 Crossover Health Medical Group Multi-Specialty Clinic/Center · Menlo Park, CA NPI 1629614086 Crossover Health Medical Group Physical Medicine & Rehabilitation Physician · Menlo Park, CA NPI 1790310142
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2022-03-20.