Mark Hroncich, MD
Internal Medicine Physician · Berwyn, IL
Mark Hroncich, MD is an internal medicine physician with a practice address in Berwyn, Illinois, and NPI 1265465108, issued on Jul 7, 2006. Check the license (Illinois 036-071240, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Mark Hroncich
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036-071240 IL
Self-reported in NPPES; status is on the state search - Practice location
- 6425 Cermak RD Ste 101-102, Berwyn, IL 60402
- Phone
- (708) 484-0044
- Enumerated
- Jul 7, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid ID
- 036071240 IL
- Medicare enrollment
- Enrolled (PECOS I20080108000864); accepts Medicare assignment
- Medical or professional school
- Northwestern University Feinberg Medical School, 1984
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 6425 Cermak RD Ste 101-102
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Bruce Kline, MDFamily Medicine Physician1891728747
- Pamela Strauss, MDInternal Medicine Physician1841224672
Verify Mark Hroncich 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 036-071240Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average internal medicine physician in 2024
9,027 Medicare Part D claims for 552 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 425 claims were for opioids.
Most prescribed
- Atorvastatin Calcium564 claims
- Amlodipine Besylate283 claims
- Hydrocodone-Acetaminophen283 claims
- Lisinopril242 claims
- Levothyroxine Sodium225 claims
- Gabapentin224 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
- Loyola Medical Group LLCBerwyn, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark Hroncich among 7,238 internal medicine physician records in Illinois
Mark Hroncich, MD is one of 7,238 internal medicine physician records with a practice address in Illinois. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 61% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1984 · median 2003 among the 3,580 with a school on file
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
67 internal medicine physician records list a practice address in Berwyn
They are 67 of the 1,031 NPPES records with a practice address in Berwyn, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Berwyn → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ricardo Arze, M.D.Berwyn, IL 604021083741110
- Charles Bareis, MDBerwyn, IL 604021740212646
- Elizabeth Becerra, M.D.Berwyn, IL 604021376560102
- Neal Bente, MDBerwyn, IL 604021861474645
- Olga Garcia, MDBerwyn, IL 604021508899436
- Yili Guo, M.D.Berwyn, IL 604021043278120
- Baudelio Herrada, MDBerwyn, IL 604021366466898
- Dilip Patel, M.D.Berwyn, IL 604021407814569
Common questions
What is Mark Hroncich, MD's NPI number?
Mark Hroncich, MD's National Provider Identifier (NPI) is 1265465108, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Hroncich, MD located?
The NPPES record lists a practice address at 6425 Cermak RD Ste 101-102, Berwyn, IL, 60402. Phone: (708) 484-0044. Providers update this record themselves, so call before visiting.
How can I verify Mark Hroncich, MD's license?
NPPES lists Illinois license number 036-071240, 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 Mark Hroncich, MD prescribe under Medicare Part D?
In 2024, Mark Hroncich, MD had 9,027 Medicare Part D claims for 552 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.