Hematology Oncology Associates of Illinois LLC
NPI 1538120381 · Hematology & Oncology Physician · Chicago, IL
Hematology Oncology Associates of Illinois LLC is a Hematology & Oncology Physician organization in Chicago, IL (NPI 1538120381).
Provider details
- NPI number
- 1538120381
- Entity type
- Organization
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Rick Perez, State Business Administrator(847) 585-7012
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
20 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
- 2006-03-31
- Last updated
- 2012-08-20
Frequently asked questions
- What is Hematology Oncology Associates of Illinois LLC's NPI number?
- Hematology Oncology Associates of Illinois LLC's National Provider Identifier (NPI) is 1538120381, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Hematology Oncology Associates of Illinois LLC?
- Hematology Oncology Associates of Illinois LLC is classified in the NPPES registry as Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Hematology Oncology Associates of Illinois LLC located?
- Hematology Oncology Associates of Illinois LLC's practice location on file with NPPES is 676 N St Clair, Chicago, IL 60611.
- What is Hematology Oncology Associates of Illinois LLC's phone number?
- The practice phone number listed in the NPPES registry for Hematology Oncology Associates of Illinois LLC is (312) 664-5400.
- Who is the authorized official for Hematology Oncology Associates of Illinois LLC?
- The authorized official listed on Hematology Oncology Associates of Illinois LLC's NPPES record is Rick Perez, State Business Administrator. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Hematology Oncology Associates of Illinois LLC's NPI active?
- Yes — Hematology Oncology Associates of Illinois LLC's NPI (1538120381) is active in the NPPES registry as of the last update on 2012-08-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.