Mazen Diab, M.D.
Nephrology Physician · Tinley Park, IL
Mazen Diab, M.D. is a nephrology physician with a practice address in Tinley Park, Illinois, and NPI 1134436819, issued on Sep 2, 2010. Check the license (Illinois 036-135420, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mazen Diab
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License numbers
- 036-135420 IL
036135420 IL
MT198421 PA
Self-reported in NPPES; status is on the state search - Practice location
- 17495 LA Grange RD, Tinley Park, IL 60487
- Phone
- (630) 873-8875
- Enumerated
- Sep 2, 2010
- Record last updated
- Mar 30, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20160222002768); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 572 in Illinois → Look up another NPI →
Also registered at 17495 LA Grange RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ruchi Balaney, PA-CMedical Physician Assistant1831408889
- Gillian BrooksPhysical Therapy Assistant1811575749
- Tekekee Buckner, FNPNurse Practitioner1538442918
- Rachelle Centeno, D.O.Diagnostic Radiology Physician1780827337
- Peter Christofylakis, PTPhysical Therapist1902274004
- Marley Coughlin, PTPhysical Therapist1194493809
Verify Mazen Diab in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-135420Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
53% fewer Medicare Part D claims than the average nephrology physician in 2024
684 Medicare Part D claims for 162 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D.
Most prescribed
- Furosemide95 claims
- Sevelamer Carbonate72 claims
- Amlodipine Besylate57 claims
- Hydralazine Hcl53 claims
- Carvedilol42 claims
- Calcium Acetate26 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Kidney And Hypertension Associates LtdChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mazen Diab among 572 nephrology physician records in Illinois
Mazen Diab, M.D. is one of 572 nephrology physician records with a practice address in Illinois. 87% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 68% of them.
- NPI issued2010 · 68% of these records are older, 28% newer
- In a Medicare fileYes · 87% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2004 · median 2002 among the 433 with a school on file
- Record last updated2017 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Illinois
There are 572 nephrology physician records in Illinois.
All 572 in Illinois → Every provider in Tinley Park → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Mohammad Mataria, M.D.Tinley Park, IL 604871750590147
- Vijaykumar Rao, M.D.South Holland, IL 604731811967730
- Waseem Zaid Alkilani, MDSouth Holland, IL 604731063897189
- Valerie Heidenry, MDAurora, IL 605041720046618
- Rasa Kedainis, M.D.Aurora, IL 605041114143021
- Harry Rubinstein, MDAurora, IL 605041154361954
- Irum Shahab, M.D.Aurora, IL 605041811165962
- Pardeep Sood, MDAurora, IL 605041205870276
Common questions
What is Mazen Diab, M.D.'s NPI number?
Mazen Diab, M.D.'s National Provider Identifier (NPI) is 1134436819, issued on Sep 2, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Mazen Diab, M.D. located?
The NPPES record lists a practice address at 17495 LA Grange RD, Tinley Park, IL, 60487. Phone: (630) 873-8875. Providers update this record themselves, so call before visiting.
How can I verify Mazen Diab, M.D.'s license?
NPPES lists Illinois license number 036-135420, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Mazen Diab, M.D. prescribe under Medicare Part D?
In 2024, Mazen Diab, M.D. had 684 Medicare Part D claims for 162 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.