Ashburn Allergy, PLLC
NPI 1174039770 · Allergy & Immunology Physician · Ashburn, VA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ashburn Allergy, PLLC is a Allergy & Immunology Physician organization in Ashburn, VA (NPI 1174039770).
Provider details
- NPI number
- 1174039770
- Entity type
- Organization
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Jiun Yoon, Physician(571) 246-6323
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs 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
- 2017-12-18
- Last updated
- 2018-08-24
Frequently asked questions
- What is Ashburn Allergy, PLLC's NPI number?
- Ashburn Allergy, PLLC's National Provider Identifier (NPI) is 1174039770, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ashburn Allergy, PLLC?
- Ashburn Allergy, PLLC is classified in the NPPES registry as Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Ashburn Allergy, PLLC located?
- Ashburn Allergy, PLLC's practice location on file with NPPES is 20955 Professional Plz Ste 300, Ashburn, VA 20147.
- What is Ashburn Allergy, PLLC's phone number?
- The practice phone number listed in the NPPES registry for Ashburn Allergy, PLLC is (571) 246-6323.
- Does Ashburn Allergy, PLLC accept Medicare?
- Ashburn Allergy, PLLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Ashburn Allergy, PLLC?
- The authorized official listed on Ashburn Allergy, PLLC's NPPES record is Jiun Yoon, Physician. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ashburn Allergy, PLLC's NPI active?
- Yes — Ashburn Allergy, PLLC's NPI (1174039770) is active in the NPPES registry as of the last update on 2018-08-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.