Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Mark Robert Sinibaldi, M.D.

Psychiatry Physician in Palos Heights, IL · enumerated 2006.

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

National Provider Identifier

1376581413

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Registry record

Entity type Individual (Type 1)

Name Dr. Mark Robert Sinibaldi

Credential M.D.

Sex Male

Practice address 12255 S 80th Ave, Suite 202, Palos Heights, IL, 60463

Phone (708) 923-7878

Fax (708) 923-7888

Enumeration date Jun 2, 2006

Last updated in NPPES Jul 8, 2007

Taxonomy & licenses

2084P0800X Psychiatry Physician Allopathic & Osteopathic Physicians · License 036050158 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential

Other identifiers

Identifier	Type	State	Issuer
219043	Other	-	MAGELLAN
7229P	Other	-	CATERPILLAR
055429	Other	-	VALUE BEHAVIORAL HEALTH
0991516762	Other	-	BCBS
363827229 01	Other	-	HERITAGE
L029112	Other	-	CHAMPUS
260033354	Other	-	RR MEDICARE
036050158	Medicaid	IL	-
363827229 01	Other	-	JOHN DEERE
41832	Other	-	JOHN HANCOCK

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

Is this the official NPI registry?

No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.

What specialty is Mark Sinibaldi?

Mark Sinibaldi is registered in NPPES with the primary taxonomy of Psychiatry Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2007-07-08.