OrganizationActive
Stuart Issleib
NPI 1912006529 · Gastroenterology Physician · Chicago, IL
Stuart Issleib is a Gastroenterology Physician organization in Chicago, IL (NPI 1912006529).
Provider details
- NPI number
- 1912006529
- Entity type
- Organization
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Stuart Issleib, Sole Proprietor(312) 567-5653
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(90/100 index)
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
2525 S Michigan Ave
Chicago, IL 60616-2333
Phone: (312) 567-5653
Fax: (312) 328-7986
Street-level locationGet directions
Mailing address
777 Oakmont Ln
Westmont, IL 60559-5511
Registry dates
- Enumerated
- 2006-09-21
- Last updated
- 2008-02-28
Frequently asked questions
- What is Stuart Issleib's NPI number?
- Stuart Issleib's National Provider Identifier (NPI) is 1912006529, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Stuart Issleib?
- Stuart Issleib is classified in the NPPES registry as Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Stuart Issleib located?
- Stuart Issleib's practice location on file with NPPES is 2525 S Michigan Ave, Chicago, IL 60616-2333.
- What is Stuart Issleib's phone number?
- The practice phone number listed in the NPPES registry for Stuart Issleib is (312) 567-5653.
- Who is the authorized official for Stuart Issleib?
- The authorized official listed on Stuart Issleib's NPPES record is Stuart Issleib, Sole Proprietor. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Stuart Issleib's NPI active?
- Yes — Stuart Issleib's NPI (1912006529) is active in the NPPES registry as of the last update on 2008-02-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.