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Robert J Sivak, M.D., Ltd

Psychiatry Physician in Tempe, AZ · enumerated 2008 · authorized official Robert Sivak, President.

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

National Provider Identifier

1578738936

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Registry record

Entity type Organization (Type 2)
Legal business name Robert J Sivak, M.D., Ltd
Practice address 4600 S Mill Ave, Suite 160, Tempe, AZ, 85282
Phone (480) 345-1200
Fax (480) 345-1281
Enumeration date Apr 28, 2008
Last updated in NPPES Jun 25, 2008

Taxonomy & classification

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 12253 (AZ) Primary

Authorized official

Name Robert Sivak
Title President
Phone (480) 345-1200

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 the NPI number for Robert J Sivak, M.D., Ltd?
The NPI for Robert J Sivak, M.D., Ltd is 1578738936, a Type 2 (organization) record in the CMS NPPES registry.
Who is the authorized official for Robert J Sivak, M.D., Ltd?
NPPES lists Robert Sivak (President) as the authorized official for this organization.

Providers at this address

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2008-06-25.