OrganizationActive
Tzam Diagnostics LLC
NPI 1285887372 · Clinical Medical Laboratory · Northbrook, IL
Tzam Diagnostics LLC is a Clinical Medical Laboratory organization in Northbrook, IL (NPI 1285887372).
Provider details
- NPI number
- 1285887372
- Entity type
- Organization
- Primary specialty
- Clinical Medical LaboratoryLaboratories
- Organization subpart
- No
- Authorized official
- Hongjun Zhang, Vice President(847) 256-3238
- License
- 14D1039167 (IL)
Specialties & taxonomies
Laboratories
Profile Score
Detailed profile(86/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
1880 Holste Rd
Northbrook, IL 60062-7716
Phone: (847) 256-3238
Fax: (847) 256-3239
Street-level locationGet directions
Mailing address
1880 Holste Rd
Northbrook, IL 60062-7716
Other names (DBA / former)
- Other name
- Tzam Clinical Laboratory
Registry dates
- Enumerated
- 2008-11-03
- Last updated
- 2014-12-12
Frequently asked questions
- What is Tzam Diagnostics LLC's NPI number?
- Tzam Diagnostics LLC's National Provider Identifier (NPI) is 1285887372, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Tzam Diagnostics LLC?
- Tzam Diagnostics LLC is classified in the NPPES registry as Clinical Medical Laboratory (Laboratories).
- Where is Tzam Diagnostics LLC located?
- Tzam Diagnostics LLC's practice location on file with NPPES is 1880 Holste Rd, Northbrook, IL 60062-7716.
- What is Tzam Diagnostics LLC's phone number?
- The practice phone number listed in the NPPES registry for Tzam Diagnostics LLC is (847) 256-3238.
- Who is the authorized official for Tzam Diagnostics LLC?
- The authorized official listed on Tzam Diagnostics LLC's NPPES record is Hongjun Zhang, Vice President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Tzam Diagnostics LLC's NPI active?
- Yes — Tzam Diagnostics LLC's NPI (1285887372) is active in the NPPES registry as of the last update on 2014-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.