NPI Portal NPI Lookup & Verification

Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Mrs. Maria Cristina Villasenor Espera

Registered Dietitian in Chicago, IL · enumerated 2008 · practices at Chicagoland Ad Medical Inc.

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

National Provider Identifier

1043469554

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Registry record

Entity type Individual (Type 1)
Name Mrs. Maria Cristina Villasenor Espera
Sex Female
Practice address 1525 W Homer St, Suite 301, Chicago, IL, 60642
Phone (888) 785-7370
Fax (888) 785-7380
Enumeration date Sep 9, 2008
Last updated in NPPES Aug 5, 2009

Taxonomy & licenses

133V00000X Registered Dietitian Dietary & Nutritional Service Providers · License 164.002897 (IL) Primary

Other identifiers

Identifier Type State Issuer
836195 Other IL COMMISSION ON DIETETIC REGISTRATION
P00705063 Other IL MEDICARE RAILROAD CARRIER

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

What specialty is Maria Cristina Espera?
Maria Cristina Espera is registered in NPPES with the primary taxonomy of Registered Dietitian. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
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.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-05.