Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Ainah Uy Tan, M.D.

Q: What is the NPI number for Ainah Tan?

The National Provider Identifier (NPI) for Ainah Tan is 1215371810, a Type 1 (individual) record in the CMS NPPES registry.

Dermatology Physician in Glen Ellyn, IL · enumerated 2013.

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

National Provider Identifier

1215371810

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Registry record

Entity type Individual (Type 1)

Name Dr. Ainah Uy Tan

Credential M.D.

Sex Female

Practice address 430 Pennsylvania Ave # 180, Glen Ellyn, IL, 60137

Phone (630) 469-9200

Fax (630) 545-7817

Enumeration date Apr 25, 2013

Last updated in NPPES Aug 23, 2023

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 125.064328 (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
036142909	Medicaid	IL	-

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 is the NPI number for Ainah Tan?

The National Provider Identifier (NPI) for Ainah Tan is 1215371810, a Type 1 (individual) record in the CMS NPPES registry.

Where does Ainah Tan practice?

The practice location on file with NPPES is in Glen Ellyn, IL. Providers can have multiple locations; NPPES lists the primary practice address.

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2023-08-23.