Balasubramaniam Iyer, MD
NPI 1497890750 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Chicago, IL
Balasubramaniam Iyer, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Chicago, IL (NPI 1497890750).
Provider details
- NPI number
- 1497890750
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036046165 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
- 2007-02-21
- Last updated
- 2010-04-21
Frequently asked questions
- What is Balasubramaniam Iyer's NPI number?
- Balasubramaniam Iyer's National Provider Identifier (NPI) is 1497890750, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Balasubramaniam Iyer's specialty?
- Balasubramaniam Iyer is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Balasubramaniam Iyer located?
- Balasubramaniam Iyer's practice location on file with NPPES is 1945 W Wilson Avenue, Chicago, IL 60640-5255.
- What is Balasubramaniam Iyer's phone number?
- The practice phone number listed in the NPPES registry for Balasubramaniam Iyer is (773) 878-5225.
- Is Balasubramaniam Iyer's NPI active?
- Yes — Balasubramaniam Iyer's NPI (1497890750) is active in the NPPES registry as of the last update on 2010-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.