Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephanie D Gan, MD

Dermatology Physician in Hinsdale, IL · enumerated 2010.

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

National Provider Identifier

1629399654

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Registry record

Entity type Individual (Type 1)

Name Stephanie D Gan

Credential MD

Sex Female

Practice address 40 S Clay St Ste Ll30e, Hinsdale, IL, 60521

Phone (630) 286-5050

Enumeration date Jun 14, 2010

Last updated in NPPES Aug 8, 2023

Taxonomy & licenses

207N00000X Dermatology Physician Allopathic & Osteopathic Physicians · License 036138235 (IL) Primary

MD · Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD 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

What is the NPI number for Stephanie Gan?

The National Provider Identifier (NPI) for Stephanie Gan is 1629399654, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephanie Gan practice?

The practice location on file with NPPES is in Hinsdale, 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 2023-08-08.