IndividualActive
Roberto Diaz, MD
NPI 1255462578 · Adult Medicine Physician · Chicago, IL
Provider details
- NPI number
- 1255462578
- Entity type
- Individual
- Primary specialty
- Adult Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(83/100 index)
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
1805 S Ashland Ave
Chicago, IL 60608-2805
Phone: (312) 421-7010
Fax: (312) 421-8056
Street-level locationGet directions
Mailing address
1805 S Ashland Ave
Chicago, IL 60608-2805
Registry dates
- Enumerated
- 2007-03-08
- Last updated
- 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.