Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Stephen S Hwang, M.D., PH.D.

Gastroenterology Physician in Enid, OK · enumerated 2005.

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

National Provider Identifier

1497740468

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Registry record

Entity type Individual (Type 1)

Name Stephen S Hwang

Credential M.D., PH.D.

Sex Male

Practice address 330 South 5th Street, Suite 305, Enid, OK, 73701

Phone (580) 249-3003

Fax (580) 237-1480

Enumeration date Sep 15, 2005

Last updated in NPPES Feb 16, 2018

Taxonomy & licenses

207RG0100X Gastroenterology Physician Allopathic & Osteopathic Physicians · License 20382 (OK) 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
100034970A	Medicaid	OH	-

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 Stephen Hwang?

The National Provider Identifier (NPI) for Stephen Hwang is 1497740468, a Type 1 (individual) record in the CMS NPPES registry.

Where does Stephen Hwang practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-02-16.