Type 2 · Organization ✓ Active NPI ✓ Valid NPI checksum

Atul Aggarwal MD A Medical Corporation

Internal Medicine Physician in Simi Valley, CA · enumerated 2012 · authorized official Atul Aggarwal, President.

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

National Provider Identifier

1457624124

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Registry record

Entity type Organization (Type 2)

Legal business name Atul Aggarwal MD A Medical Corporation

Practice address 2925 Sycamore Dr, Suite 302b, Simi Valley, CA, 93065

Phone (805) 583-5864

Fax (805) 526-4471

Enumeration date Feb 10, 2012

Last updated in NPPES Dec 13, 2023

Taxonomy & classification

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License A37225 (CA) Primary

207RP1001X Pulmonary Disease Physician Allopathic & Osteopathic Physicians · License A37225 (CA) Secondary

Authorized official

Name Atul Aggarwal

Title President

Phone (805) 583-5864

Other identifiers

Identifier	Type	State	Issuer
00A372250	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

What is a Type 2 NPI?

A Type 2 NPI identifies an organization (group practice, hospital, pharmacy, lab), while Type 1 NPIs identify individual providers. Organizations bill under their Type 2 NPI.

What type of organization is Atul Aggarwal MD A Medical Corporation?

Atul Aggarwal MD A Medical Corporation is registered in NPPES as a Internal Medicine Physician (its primary provider taxonomy).

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-12-13.