Robert Breyer, MD
NPI 1992777445 · Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · Chicago, IL
Robert Breyer, MD is a Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician provider in Chicago, IL (NPI 1992777445).
Provider details
- NPI number
- 1992777445
- Entity type
- Individual
- Primary specialty
- Thoracic Surgery (Cardiothoracic Vascular Surgery) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 036047470 (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
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
- 2006-02-07
- Last updated
- 2010-02-05
Frequently asked questions
- What is Robert Breyer's NPI number?
- Robert Breyer's National Provider Identifier (NPI) is 1992777445, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Breyer's specialty?
- Robert Breyer is listed in the NPPES registry with a primary specialty of Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Breyer located?
- Robert Breyer's practice location on file with NPPES is 2800 N Sheridan Rd, Chicago, IL 60657-6156.
- What is Robert Breyer's phone number?
- The practice phone number listed in the NPPES registry for Robert Breyer is (773) 477-4343.
- Is Robert Breyer's NPI active?
- Yes — Robert Breyer's NPI (1992777445) is active in the NPPES registry as of the last update on 2010-02-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.