Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Alejandra Perez-Tamayo
Surgery Physician in Chicago, IL · enumerated 2014.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1821416165
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Registry record
Entity type Individual (Type 1)
Name Alejandra Perez-Tamayo
Sex Female
Practice address 1801 W. Taylor Street, Mc741, Chicago, IL, 60612
Phone (312) 996-2061
Fax (312) 996-1214
Enumeration date Apr 3, 2014
Last updated in NPPES Apr 14, 2021
Taxonomy & licenses
208C00000X Colon & Rectal Surgery Physician Allopathic & Osteopathic Physicians · License 036.149537 (IL) Secondary
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.
Frequently asked questions
Where does Alejandra Perez-Tamayo practice?
The practice location on file with NPPES is in Chicago, IL. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Alejandra Perez-Tamayo?
The National Provider Identifier (NPI) for Alejandra Perez-Tamayo is 1821416165, a Type 1 (individual) record in the CMS NPPES registry.
Other providers at this practice address
Browse all →Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-04-14.