Lee Bass, M.D
NPI 1881866259 · Pediatric Gastroenterology Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lee Bass, M.D is a Pediatric Gastroenterology Physician provider in Chicago, IL (NPI 1881866259).
Provider details
- NPI number
- 1881866259
- Entity type
- Individual
- Primary specialty
- Pediatric Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D
- Sex
- Male
- Sole proprietor
- No
- License
- 336074257 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
18 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$37,230 across 36 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-03-26
- Last updated
- 2025-05-27
- Certified
- 2025-05-27
Frequently asked questions
- What is Lee Bass's NPI number?
- Lee Bass's National Provider Identifier (NPI) is 1881866259, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lee Bass's specialty?
- Lee Bass is listed in the NPPES registry with a primary specialty of Pediatric Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Lee Bass located?
- Lee Bass's practice location on file with NPPES is 225 E Chicago Ave # 65, Chicago, IL 60611-2991.
- What is Lee Bass's phone number?
- The practice phone number listed in the NPPES registry for Lee Bass is (312) 227-4200.
- Does Lee Bass accept Medicare?
- Lee Bass is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lee Bass's NPI active?
- Yes — Lee Bass's NPI (1881866259) is active in the NPPES registry as of the last update on 2025-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.