IndividualActive
Gerald Leef, M.D.
NPI 1487655759 · Diagnostic Radiology Physician · Chicago, IL
Gerald Leef, M.D. is a Diagnostic Radiology Physician provider in Chicago, IL (NPI 1487655759).
Provider details
- NPI number
- 1487655759
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(84/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 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
1501 S California Ave
Chicago, IL 60608-1732
Phone: (773) 257-6498
Street-level locationGet directions
Mailing address
3537 Paysphere Cir
Chicago, IL 60674-0035
Registry dates
- Enumerated
- 2005-08-09
- Last updated
- 2026-05-17
Frequently asked questions
- What is Gerald Leef's NPI number?
- Gerald Leef's National Provider Identifier (NPI) is 1487655759, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gerald Leef's specialty?
- Gerald Leef is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Gerald Leef located?
- Gerald Leef's practice location on file with NPPES is 1501 S California Ave, Chicago, IL 60608-1732.
- What is Gerald Leef's phone number?
- The practice phone number listed in the NPPES registry for Gerald Leef is (773) 257-6498.
- Is Gerald Leef's NPI active?
- Yes — Gerald Leef's NPI (1487655759) is active in the NPPES registry as of the last update on 2026-05-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.