John Sheagren, M.D.
NPI 1598780892 · Internal Medicine Physician · Chicago, IL
John Sheagren, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1598780892).
Provider details
- NPI number
- 1598780892
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 4301038958 (MI)
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
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
Mailing address
Registry dates
- Enumerated
- 2006-07-13
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Sheagren's NPI number?
- John Sheagren's National Provider Identifier (NPI) is 1598780892, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sheagren's specialty?
- John Sheagren is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Sheagren located?
- John Sheagren's practice location on file with NPPES is 836 W Wellington Ave, Chicago, IL 60657-5147.
- What is John Sheagren's phone number?
- The practice phone number listed in the NPPES registry for John Sheagren is (773) 296-7084.
- Is John Sheagren's NPI active?
- Yes — John Sheagren's NPI (1598780892) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.