Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Adam N Treitman, MD

Infectious Disease Physician in Oak Lawn, IL · enumerated 2005.

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

National Provider Identifier

1649266503

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Registry record

Entity type Individual (Type 1)

Name Adam N Treitman

Credential MD

Sex Male

Practice address 4440 W 95th St, Oak Lawn, IL, 60453

Phone (708) 684-5674

Fax (708) 684-2500

Enumeration date Sep 26, 2005

Last updated in NPPES May 12, 2022

Taxonomy & licenses

207RI0200X Infectious Disease Physician Allopathic & Osteopathic Physicians · License 036107486 (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
P00144359	Other	IL	RAILROAD MEDICARE
036107486	Medicaid	IL	-
160604	Other	IL	ADVOCATE HLTH PARTNERS ID
2160749230	Other	IL	BCBS PROVIDER ID

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 Adam Treitman?

Adam Treitman is registered in NPPES with the primary taxonomy of Infectious Disease 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 2022-05-12.