Helen Su, MD
NPI 1780470138 · Allergy & Immunology Physician · Bethesda, MD
Enrolled with Medicare as Order and Referring Only - Allergy/Immunology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Helen Su, MD is a Allergy & Immunology Physician provider in Bethesda, MD (NPI 1780470138).
Provider details
- NPI number
- 1780470138
- Entity type
- Individual
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- D0057510 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-04-15
- Last updated
- 2025-04-15
- Certified
- 2025-04-15
Frequently asked questions
- What is Helen Su's NPI number?
- Helen Su's National Provider Identifier (NPI) is 1780470138, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Helen Su's specialty?
- Helen Su is listed in the NPPES registry with a primary specialty of Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Helen Su located?
- Helen Su's practice location on file with NPPES is Op11, Clinical Center 10crc Center Dr Msc 1456, Bethesda, MD 20892-0001.
- What is Helen Su's phone number?
- The practice phone number listed in the NPPES registry for Helen Su is (301) 496-4000.
- Does Helen Su accept Medicare?
- Helen Su is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Helen Su's NPI active?
- Yes — Helen Su's NPI (1780470138) is active in the NPPES registry as of the last update on 2025-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.