Nivan Chowattukunnel
NPI 1629537816 · Hematology & Oncology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nivan Chowattukunnel is a Hematology & Oncology Physician provider in Chicago, IL (NPI 1629537816).
Provider details
- NPI number
- 1629537816
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- No
- License
- 036.175156 (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
7 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
- 2019-03-18
- Last updated
- 2025-09-29
- Certified
- 2025-09-29
Frequently asked questions
- What is Nivan Chowattukunnel's NPI number?
- Nivan Chowattukunnel's National Provider Identifier (NPI) is 1629537816, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nivan Chowattukunnel's specialty?
- Nivan Chowattukunnel is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Nivan Chowattukunnel located?
- Nivan Chowattukunnel's practice location on file with NPPES is 900 W Nelson St, Chicago, IL 60657-6704.
- What is Nivan Chowattukunnel's phone number?
- The practice phone number listed in the NPPES registry for Nivan Chowattukunnel is (773) 296-7089.
- Does Nivan Chowattukunnel accept Medicare?
- Nivan Chowattukunnel is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nivan Chowattukunnel's NPI active?
- Yes — Nivan Chowattukunnel's NPI (1629537816) is active in the NPPES registry as of the last update on 2025-09-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.