NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Ahmed Isam Garieballa, MBBS

General Acute Care Hospital in Oakland, CA · enumerated 2021.

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

National Provider Identifier

1255913950

Verified

See something wrong? Report a correction

Registry record

Entity type Individual (Type 1)
Name Ahmed Isam Garieballa
Credential MBBS
Sex Male
Practice address Oakland, CA, 94602
Phone (510) 437-5039
Enumeration date Apr 22, 2021
Last updated in NPPES Jun 17, 2024

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

390200000X Student in an Organized Health Care Education/Training Program Student, Health Care Secondary
282N00000X General Acute Care Hospital Hospitals · License A192700 (CA) Primary

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

What specialty is Ahmed Garieballa?
Ahmed Garieballa is registered in NPPES with the primary taxonomy of General Acute Care Hospital. 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 →

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-17.