NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. William Martin Carrera, M.D.

Ophthalmology Physician in Oakland, CA · enumerated 2017 · practices at East Bay Retina Consultants A Medical Group, Inc..

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1679014013

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Dr. William Martin Carrera
Credential M.D.
Sex Male
Practice address 3300 Telegraph Ave, Oakland, CA, 94609
Phone (510) 444-1600
Fax (510) 444-5117
Enumeration date Mar 18, 2017
Last updated in NPPES Jul 16, 2024

Taxonomy & licenses

207WX0107X Retina Specialist (Ophthalmology) Physician Allopathic & Osteopathic Physicians · License A158123 (CA) Secondary
207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License A158123 (CA) Primary
MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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.

Read the full guide → Validate an NPI →

Frequently asked questions

Is NPI 1679014013 active?
Yes, as of the latest NPPES snapshot, NPI 1679014013 is active (record last updated 2024-07-16).
How do I verify William Carrera's NPI record?
Cross-check NPI 1679014013 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Other providers at this practice address

Browse all →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-07-16.