Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Christopher Kwan Hwang, MD

Ophthalmology Physician in Saint Louis, MO · enumerated 2014 · practices at Mohamed Elsafi, DDS LLC.

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

National Provider Identifier

1477973113

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Registry record

Entity type Individual (Type 1)

Name Dr. Christopher Kwan Hwang

Credential MD

Sex Male

Practice address 517 S Euclid Ave, Dept Opthalmology, 1st Fl, Saint Louis, MO, 63110

Phone (314) 362-3431

Fax (314) 362-6564

Enumeration date Apr 21, 2014

Last updated in NPPES Nov 15, 2021

Taxonomy & licenses

207W00000X Ophthalmology Physician Allopathic & Osteopathic Physicians · License 2020014796 (MO) 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
200084479	Medicaid	MO	-

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.

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Frequently asked questions

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.

What specialty is Christopher Hwang?

Christopher Hwang is registered in NPPES with the primary taxonomy of Ophthalmology Physician. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-11-15.