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Dimitri Sirakoff D.O., Inc

Physician Assistant in Santa Ana, CA · enumerated 2008 · authorized official Marty Sillasen, Office Manager.

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

National Provider Identifier

1104076256

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Registry record

Entity type Organization (Type 2)
Legal business name Dimitri Sirakoff D.O., Inc
Other name <Unavail>
Practice address 1206 E 17th Street, Suite 204, Santa Ana, CA, 92701
Phone (714) 835-3500
Fax (714) 835-4619
Enumeration date Sep 25, 2008
Last updated in NPPES Sep 25, 2008

Taxonomy & classification

363A00000X Physician Assistant Physician Assistants & Advanced Practice Nursing Providers · License PA19687 (CA) Primary

Authorized official

Name Marty Sillasen
Title Office Manager
Phone (714) 835-3500

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

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 Dimitri Sirakoff D.O., Inc?
Dimitri Sirakoff D.O., Inc is registered in NPPES as a Physician Assistant (its primary provider taxonomy).

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-09-25.