Joseph Chapman
NPI 1164985164 · Pediatric Gastroenterology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joseph Chapman is a Pediatric Gastroenterology Physician provider in Chicago, IL (NPI 1164985164).
Provider details
- NPI number
- 1164985164
- Entity type
- Individual
- Primary specialty
- Pediatric Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 036176298 (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
7 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 9555 S 52nd AveOak Lawn, IL 60453-3054Phone: (708) 684-5437
Registry dates
- Enumerated
- 2019-04-08
- Last updated
- 2026-04-30
- Certified
- 2026-04-30
Frequently asked questions
- What is Joseph Chapman's NPI number?
- Joseph Chapman's National Provider Identifier (NPI) is 1164985164, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joseph Chapman's specialty?
- Joseph Chapman is listed in the NPPES registry with a primary specialty of Pediatric Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Joseph Chapman located?
- Joseph Chapman's practice location on file with NPPES is 5841 S Maryland Ave, Chicago, IL 60637-1443.
- What is Joseph Chapman's phone number?
- The practice phone number listed in the NPPES registry for Joseph Chapman is (888) 824-0200.
- Does Joseph Chapman accept Medicare?
- Joseph Chapman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joseph Chapman's NPI active?
- Yes — Joseph Chapman's NPI (1164985164) is active in the NPPES registry as of the last update on 2026-04-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.