Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Sonia K Chung, OD
Optometrist in Phoenix, AZ · enumerated 2006.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1780747758
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Registry record
Entity type Individual (Type 1)
Name Sonia K Chung
Credential OD
Sex Female
Practice address 2337 W Northern Ave, Phoenix, AZ, 85021
Phone (602) 995-8848
Fax (602) 995-2980
Enumeration date Dec 19, 2006
Last updated in NPPES Jul 6, 2010
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 |
|---|---|---|---|
| Z134531 | Other | AZ | PTAN |
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 specialty is Sonia Chung?
Sonia Chung is registered in NPPES with the primary taxonomy of Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Is this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
Other providers at this practice address
Browse all → Robert Clanton Optometrist · Phoenix, AZ NPI 1699757922 Northern Avenue Eye Care, LLC Optometrist · Phoenix, AZ NPI 1245389055 Emmett Downing Optician · Phoenix, AZ NPI 1326517665 Northern Medical & Optical LLC Optician · Phoenix, AZ NPI 1275002271 Robert J Clanton, Od LLC Optometrist · Phoenix, AZ NPI 1982166831
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2010-07-06.