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Island Medical Group A Medical Corporation

Nephrology Physician in Alameda, CA · enumerated 2006 · authorized official Alka Sharma, MD / Owner.

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

National Provider Identifier

1750474045

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Registry record

Entity type Organization (Type 2)
Legal business name Island Medical Group A Medical Corporation
Practice address 2070 Clinton Ave Fl 4, Alameda, CA, 94501
Phone (510) 748-0931
Fax (510) 748-8110
Enumeration date Oct 2, 2006
Last updated in NPPES Jul 30, 2021

Taxonomy & classification

207RN0300X Nephrology Physician Allopathic & Osteopathic Physicians · License A48009 (CA) Primary

Authorized official

Name Alka Sharma
Title MD / Owner
Phone (510) 748-0931

Other identifiers

Identifier Type State Issuer
00A480090 Medicaid CA -

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.

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Frequently asked questions

Who is the authorized official for Island Medical Group A Medical Corporation?
NPPES lists Alka Sharma (MD / Owner) as the authorized official for this organization.
What is the NPI number for Island Medical Group A Medical Corporation?
The NPI for Island Medical Group A Medical Corporation is 1750474045, a Type 2 (organization) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-07-30.