Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Alireza Zadsalamat, DO

Hospitalist Physician in Olympia Fields, IL · enumerated 2010.

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

National Provider Identifier

1548588635

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Registry record

Entity type Individual (Type 1)

Name Dr. Alireza Zadsalamat

Credential DO

Sex Male

Practice address 20201 S. Crawford, Olympia Fields, IL, 60461

Phone (708) 747-4000

Enumeration date May 13, 2010

Last updated in NPPES Nov 13, 2017

Taxonomy & licenses

207R00000X Internal Medicine Physician Allopathic & Osteopathic Physicians · License 20A15246 (CA) Secondary

208M00000X Hospitalist Physician Allopathic & Osteopathic Physicians · License 20A15246 (CA) Primary

DO · Doctor of Osteopathic Medicine: A fully licensed physician trained in osteopathic medical schools, with the same practice rights as an MD. About the DO credential

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

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 Alireza Zadsalamat?

Alireza Zadsalamat is registered in NPPES with the primary taxonomy of Hospitalist 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 2017-11-13.