OrganizationActive
Onsite Diagnostic Labs Inc
NPI 1346813797 · Clinical Medical Laboratory · Evanston, IL
Onsite Diagnostic Labs Inc is a Clinical Medical Laboratory organization in Evanston, IL (NPI 1346813797).
Provider details
- NPI number
- 1346813797
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Organization subpart
- No
- Authorized official
- Stephan Erdelyi, President(847) 530-4994
Specialties & taxonomies
Laboratories
Profile Score
Established profile(62/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
2521 Gross Point Rd Ste 1b
Evanston, IL 60201-4993
Phone: (847) 530-4994
Approximate (ZIP-level) locationGet directions
Mailing address
2521 Gross Point Rd Ste 1b
Evanston, IL 60201-4993
Other names (DBA / former)
- Former legal business name
- Onsite Lab Corp
Registry dates
- Enumerated
- 2021-07-22
- Last updated
- 2026-03-02
- Certified
- 2026-03-02
Frequently asked questions
- What is Onsite Diagnostic Labs Inc's NPI number?
- Onsite Diagnostic Labs Inc's National Provider Identifier (NPI) is 1346813797, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Onsite Diagnostic Labs Inc?
- Onsite Diagnostic Labs Inc is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Onsite Diagnostic Labs Inc located?
- Onsite Diagnostic Labs Inc's practice location on file with NPPES is 2521 Gross Point Rd Ste 1b, Evanston, IL 60201-4993.
- What is Onsite Diagnostic Labs Inc's phone number?
- The practice phone number listed in the NPPES registry for Onsite Diagnostic Labs Inc is (847) 530-4994.
- Who is the authorized official for Onsite Diagnostic Labs Inc?
- The authorized official listed on Onsite Diagnostic Labs Inc's NPPES record is Stephan Erdelyi, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Onsite Diagnostic Labs Inc's NPI active?
- Yes — Onsite Diagnostic Labs Inc's NPI (1346813797) is active in the NPPES registry as of the last update on 2026-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.