NPI Portal NPI Lookup & Verification

Dr. John Corzine, O.D.

Dr. John Corzine is a Corneal and Contact Management Optometrist provider (Optometrist) practicing in Berkeley, CA, registered in the NPPES registry with NPI 1023156965 since 2007. The credential OD stands for Doctor of Optometry.

✓ Active NPI ✓ Valid NPI checksum

NPI 1023156965
Entity type Individual (Type 1)
Name Dr. John Corzine
Credential O.D.
Sex Male
Practice address 200 MINOR HALL, UNIVERSITY OF CALIFORNIA, Berkeley, CA, 94720
Phone 5106432793
Fax 5106435109
Enumeration date 2007-02-02
Last updated in NPPES 2007-07-08

Taxonomy & licenses

Taxonomy code Specialty Primary License State
152WC0802X Corneal and Contact Management Optometrist Primary OPT 9875 TPL CA

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
SD0098750 Medicaid CA
Copy-ready billing details
Provider: John Corzine, O.D.
NPI: 1023156965
Taxonomy: 152WC0802X (Corneal and Contact Management Optometrist)
Address: 200 MINOR HALL, UNIVERSITY OF CALIFORNIA, Berkeley, CA, 94720

Other providers at this practice address

NPI Name Type Specialty Location
1205970670 Sara Frane Individual Optometrist Berkeley, CA
1003941766 Carl Jacobsen Individual Optometrist Berkeley, CA
1528252384 Kuniyoshi Kanai Individual Optometrist Berkeley, CA
1073788147 Joyce Yu Individual Optometrist Berkeley, CA
1578792891 Kelly Kao Individual Vision Therapy Optometrist Berkeley, CA
1326328790 Melissa Valdellon Individual Optometrist Berkeley, CA
1932654043 Tara Pahlevan-Chaleshtari Individual Optometrist Berkeley, CA
1780163808 Christine Yoo Individual Optometrist Berkeley, CA

Verify this record

Cross-check NPI 1023156965 against the authoritative CMS record: view Dr. John Corzine on the official NPPES registry .

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. Read the full guide or validate an NPI number.

Frequently asked questions

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.
What specialty is John Corzine?
John Corzine is registered in NPPES with the primary taxonomy of Corneal and Contact Management Optometrist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.