Dr. Eliezer Diaz , DO
General Practice β’ Chicago, IL
5145 N California Ave
Chicago, IL 606253661
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
Practice Location & Contact Primary Location
5145 N California Ave
Chicago, IL 606253661
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
General Practice: NPPES taxonomy is a reported classification, not proof of board certification.
Industry payments (Open Payments)
No Open Payments records are listed for this clinician for 2019β2025.
NPI first issued
2025
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, βDoes your provider accept Medicare as full payment?β
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Compared with the same specialty in Chicago and Illinois
98 active clinicians are listed under General Practice with a practice address in Chicago, IL (291 in Illinois).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Chicago
3.1% of these 98 clinicians have the CMS telehealth indicator.
12.2% of these 98 clinicians are listed by CMS as accepting Medicare assignment.
Sources: CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· Report an error.
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2025-12-16NUCC Taxonomy Code: 208D00000X
A physician who specializes in the general practice of diagnosing, treating, and managing patients with a variety of illnesses and conditions.
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Emergency Medicine
Doctor of Medicine (M.D.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Hospitalist
Doctor of Osteopathic Medicine (D.O.)
Hospitalist
Doctor of Medicine (M.D.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
General Practice (license number reported to NPPES: IL 125.086198)
NPI status registered as active in NPPES database
Registered at 5145 N CALIFORNIA AVE, CHICAGO, IL 606253661 (Tel: 7739893808)
Registered at 5145 N CALIFORNIA AVE, CHICAGO, IL 606253661 (Tel: 7739893808)
Recorded as ELIEZER DIAZ, D.O.
Student in an Organized Health Care Education/Training Program
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other General Practices in Chicago
- Dr. Andrea Rentea, MD
- Dr. Renee Hartz, MD
- Dr. Rolando Sajor, MD
- Dr. Bernardo Li, MD
- Dr. Mahmoud Okash, MD
- Dr. Mir Ali, MD
Mailing Address
5145 N California Ave
Chicago, IL 606253661
Phone: 7739893808