Sean D Oconnor MD Sc
NPI 1740693423 · Internal Medicine Physician · Chicago, IL
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sean D Oconnor MD Sc is a Internal Medicine Physician organization in Chicago, IL (NPI 1740693423).
Provider details
- NPI number
- 1740693423
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Sean Oconnor, Owner(312) 944-6677
- License
- 036-097642 (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
12 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
- 2014-06-10
- Last updated
- 2014-06-10
Frequently asked questions
- What is Sean D Oconnor MD Sc's NPI number?
- Sean D Oconnor MD Sc's National Provider Identifier (NPI) is 1740693423, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Sean D Oconnor MD Sc?
- Sean D Oconnor MD Sc is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sean D Oconnor MD Sc located?
- Sean D Oconnor MD Sc's practice location on file with NPPES is 211 E Chicago Ave, Chicago, IL 60611-2637.
- What is Sean D Oconnor MD Sc's phone number?
- The practice phone number listed in the NPPES registry for Sean D Oconnor MD Sc is (312) 944-6677.
- Does Sean D Oconnor MD Sc accept Medicare?
- Sean D Oconnor MD Sc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Sean D Oconnor MD Sc?
- The authorized official listed on Sean D Oconnor MD Sc's NPPES record is Sean Oconnor, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Sean D Oconnor MD Sc's NPI active?
- Yes — Sean D Oconnor MD Sc's NPI (1740693423) is active in the NPPES registry as of the last update on 2014-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.