Oak Brook Allergists Sc
NPI 1700819117 · Allergy & Immunology Physician · Elmhurst, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Oak Brook Allergists Sc is a Allergy & Immunology Physician organization in Elmhurst, IL (NPI 1700819117).
Provider details
- NPI number
- 1700819117
- Entity type
- Organization
- Primary specialty
- Allergy & Immunology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- David Knysak, President(630) 574-0460
- License
- 042000355 (IL)
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
19 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
- 2006-07-09
- Last updated
- 2018-03-12
Frequently asked questions
- What is Oak Brook Allergists Sc's NPI number?
- Oak Brook Allergists Sc's National Provider Identifier (NPI) is 1700819117, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Oak Brook Allergists Sc?
- Oak Brook Allergists Sc is classified in the NPPES registry as Allergy & Immunology Physician (Allopathic & Osteopathic Physicians).
- Where is Oak Brook Allergists Sc located?
- Oak Brook Allergists Sc's practice location on file with NPPES is 360 W Butterfield Rd Ste 140, Elmhurst, IL 60126-5025.
- What is Oak Brook Allergists Sc's phone number?
- The practice phone number listed in the NPPES registry for Oak Brook Allergists Sc is (630) 574-0460.
- Does Oak Brook Allergists Sc accept Medicare?
- Oak Brook Allergists Sc 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 Oak Brook Allergists Sc?
- The authorized official listed on Oak Brook Allergists Sc's NPPES record is David Knysak, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Oak Brook Allergists Sc's NPI active?
- Yes — Oak Brook Allergists Sc's NPI (1700819117) is active in the NPPES registry as of the last update on 2018-03-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.