Ron J. Chacko, MD
Family Medicine Physician · Berwyn, IL
Ron J. Chacko, MD is a family medicine physician with a practice address in Berwyn, Illinois, and NPI 1053527184, issued on May 15, 2007. Check the license (Illinois 036.126315, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ron J. Chacko
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- 036.126315 IL
A107917 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7000 Cermak RD, Berwyn, IL 60402
- Phone
- (708) 484-8090
- Enumerated
- May 15, 2007
- Record last updated
- Dec 4, 2024
- Fax
- (708) 445-4444
- Medicare enrollment
- Enrolled (PECOS I20110208000128); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 2006
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 7000 Cermak RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joel Augustin, MDFamily Medicine Physician1952421042
- Julie Blankemeier, MDFamily Medicine Physician1801101555
- Claudelia Cano, FNPFamily Nurse Practitioner1295380152
- Carolina Diaz, LCSWClinical Social Worker1558005389
- Dinora Flores, NPFamily Nurse Practitioner1073024501
- Mayra Gonzalez, M.D.Family Medicine Physician1548550262
Verify Ron J. Chacko 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 036.126315Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average family medicine physician in 2024
813 Medicare Part D claims for 42 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 29% of claims.
Most prescribed
- Atorvastatin Calcium88 claims
- Amlodipine Besylate53 claims
- Biktarvy44 claims
- Metformin Hcl28 claims
- Ozempic27 claims
- Metformin Hcl Er22 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
- Northwestern Medical Faculty FoundationChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
99 family medicine physician records list a practice address in Berwyn
They are 99 of the 1,031 NPPES records with a practice address in Berwyn, and 6,215 family medicine physician records in Illinois.
All 99 in Berwyn → All 6,215 in Illinois → Every provider in Berwyn →
Other family medicine physician records in Illinois
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- Muhammad AbbasAlton, IL1588341556
- Syed AbbasWest Dundee, IL1972733103
- Stefanie AbbottMaywood, IL1861137457
- Roann Abdeladl, MDEvanston, IL1437087103
- Ahmed Abdelkader, MDChicago, IL1659104230
- Guy Abderholden, MDAntioch, IL1902899792
Common questions
What is Ron J. Chacko, MD's NPI number?
Ron J. Chacko, MD's National Provider Identifier (NPI) is 1053527184, issued on May 15, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Ron J. Chacko, MD located?
The NPPES record lists a practice address at 7000 Cermak RD, Berwyn, IL, 60402. Phone: (708) 484-8090. Providers update this record themselves, so call before visiting.
How can I verify Ron J. Chacko, MD's license?
NPPES lists Illinois license number 036.126315, 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 Ron J. Chacko, MD prescribe under Medicare Part D?
In 2024, Ron J. Chacko, MD had 813 Medicare Part D claims for 42 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.