Jack Clifton, M.D.
NPI 1164441887 · Internal Medicine Physician · Chicago, IL
Jack Clifton, M.D. is a Internal Medicine Physician provider in Chicago, IL (NPI 1164441887).
Provider details
- NPI number
- 1164441887
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
- Pediatric Medical Toxicology Physician2080T0002X
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
83% 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
- 2006-07-19
- Last updated
- 2025-09-11
Frequently asked questions
- What is Jack Clifton's NPI number?
- Jack Clifton's National Provider Identifier (NPI) is 1164441887, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jack Clifton's specialty?
- Jack Clifton is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Jack Clifton located?
- Jack Clifton's practice location on file with NPPES is 1901 W Harrison St, Chicago, IL 60612-3714.
- What is Jack Clifton's phone number?
- The practice phone number listed in the NPPES registry for Jack Clifton is (312) 864-6000.
- Is Jack Clifton's NPI active?
- Yes — Jack Clifton's NPI (1164441887) is active in the NPPES registry as of the last update on 2025-09-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.