Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Sheikh Gustaveson & Nassar Inc A Professional Corporation

Internal Medicine Physician in Madera, CA · enumerated 2009 · authorized official Zafar Sheikh, President.

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

National Provider Identifier

1699004044

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Registry record

Entity type Organization (Type 2)

Legal business name Sheikh Gustaveson & Nassar Inc A Professional Corporation

Practice address 1111 W 4th St, Bld B, Madera, CA, 93637

Phone (559) 662-2700

Fax (559) 673-1588

Enumeration date Dec 14, 2009

Last updated in NPPES Feb 11, 2016

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians Primary

Authorized official

Name Zafar Sheikh

Title President

Phone (559) 662-2700

Other identifiers

Identifier	Type	State	Issuer
1699004044	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.

Read the full guide → Validate an NPI →

Frequently asked questions

Where is Sheikh Gustaveson & Nassar Inc A Professional Corporation located?

The practice location on file with NPPES is in Madera, CA.

How current is this record?

Data comes from the CMS NPPES public dissemination file; this record was last updated in NPPES on 2016-02-11. Verify at npiregistry.cms.hhs.gov.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-02-11.