Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Helen Chun-Hui Su, MD

Q: What is the NPI number for Helen Su?

The National Provider Identifier (NPI) for Helen Su is 1780470138, a Type 1 (individual) record in the CMS NPPES registry.

Allergy & Immunology Physician in Bethesda, MD · enumerated 2025.

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

National Provider Identifier

1780470138

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Registry record

Entity type Individual (Type 1)

Name Dr. Helen Chun-Hui Su

Credential MD

Sex Female

Practice address Op11, Clinical Center 10crc Center Dr Msc 1456, Bethesda, MD, 20892

Phone (301) 496-4000

Enumeration date Apr 15, 2025

Last updated in NPPES Apr 15, 2025

Taxonomy & licenses

208000000X Pediatrics Physician Allopathic & Osteopathic Physicians · License D0057510 (MD) Secondary

207K00000X Allergy & Immunology Physician Allopathic & Osteopathic Physicians · License D0057510 (MD) 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 Helen Su?

The National Provider Identifier (NPI) for Helen Su is 1780470138, a Type 1 (individual) record in the CMS NPPES registry.

Where does Helen Su practice?

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

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2025-04-15.