Marcin Z. Baber, M.D.
Internal Medicine Physician · Lombard, IL
Marcin Z. Baber, M.D. is an internal medicine physician with a practice address in Lombard, Illinois, and NPI 1992918510, issued on May 8, 2007. Check the license (Illinois 125048206, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Marcin Z. Baber
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 125048206 IL
Self-reported in NPPES; status is on the state search - Practice location
- 2340 S Highland Ave, Lombard, IL 60148
- Phone
- (630) 932-2020
- Enumerated
- May 8, 2007
- Record last updated
- Aug 3, 2023
- Fax
- (630) 932-4688
- Medicare enrollment
- Enrolled (PECOS I20070618000189); accepts Medicare assignment
- Medical or professional school
- Temple University School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 2340 S Highland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mohan Airan, MDSurgery Physician1417980988
- Carl Barsanti, M.D.Internal Medicine Physician1861450637
- Mary Barton, CNPAdult Health Nurse Practitioner1437226594
- Davena Beal, PMH-NPPsychiatric/Mental Health Nurse Practitioner1407391212
- John Belmonte, M.D.Surgery Physician1184603060
- Anna Blazevic, MS, OTR/LOccupational Therapist1407036742
Verify Marcin Z. Baber 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 125048206Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% more Medicare Part D claims than the average internal medicine physician in 2024
3,953 Medicare Part D claims for 727 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 76 claims were for opioids.
Most prescribed
- Atorvastatin Calcium321 claims
- Levothyroxine Sodium176 claims
- Rosuvastatin Calcium167 claims
- Amlodipine Besylate166 claims
- Losartan Potassium129 claims
- Lisinopril114 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.
The MIPS final score for 2023 (Medicare payment program): 94.1 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Marcin Z. Baber among 7,238 internal medicine physician records in Illinois
Marcin Z. Baber, M.D. 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 2007, is newer than 39% of them.
- NPI issued2007 · 39% of these records are older, 55% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated2004 · median 2003 among the 3,580 with a school on file
- Record last updated2023 · 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).
38 internal medicine physician records list a practice address in Lombard
They are 38 of the 1,347 NPPES records with a practice address in Lombard, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Lombard → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Kris Alloju, MDLombard, IL 601481760478671
- Julia Andreoni, M.D.Lombard, IL 601481184601148
- Carl Barsanti, M.D.Lombard, IL 601481861450637
- Ojash Bhagwakar, MDLombard, IL 601481740255298
- David Dungan, MDLombard, IL 601481558336057
- Catherine Grotelueschen, M.D.Lombard, IL 601481346208428
- Jacques Jentel, M.D.Lombard, IL 601481336115583
- Kathleen Kicsak, MDLombard, IL 601481235105396
Common questions
What is Marcin Z. Baber, M.D.'s NPI number?
Marcin Z. Baber, M.D.'s National Provider Identifier (NPI) is 1992918510, issued on May 8, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Marcin Z. Baber, M.D. located?
The NPPES record lists a practice address at 2340 S Highland Ave, Lombard, IL, 60148. Phone: (630) 932-2020. Providers update this record themselves, so call before visiting.
How can I verify Marcin Z. Baber, M.D.'s license?
NPPES lists Illinois license number 125048206, 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 Marcin Z. Baber, M.D. prescribe under Medicare Part D?
In 2024, Marcin Z. Baber, M.D. had 3,953 Medicare Part D claims for 727 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Marcin Z. Baber, M.D.'s MIPS final score?
The 2023 MIPS final score is 94.1 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.