Brian R. Ybarra
Internal Medicine Physician · Oak Park, IL
Brian R. Ybarra is an internal medicine physician with a practice address in Oak Park, Illinois, and NPI 1396328787, issued on May 3, 2021. Check the license (Illinois 125.082617, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Brian R. Ybarra
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 125.082617 IL
Self-reported in NPPES; status is on the state search - Practice location
- 520 S Maple Ave, Oak Park, IL 60304
- Phone
- (708) 660-4445
- Enumerated
- May 3, 2021
- Record last updated
- Jun 30, 2026
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 520 S Maple Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maria Aguinaldo, M.D.Emergency Medicine Physician1306877220
- Hayley Altshuler, PA-CPhysician Assistant1396490991
- Saadia Alvi, M.D.Endocrinology, Diabetes & Metabolism Physician1568682177
- Jessie Amstadt, RN, AA-SANERegistered Nurse1730995762
- Elizabeth Bassett, CRNACertified Registered Nurse Anesthetist1053717033
- Cynthia Batassa, DPTPhysical Therapist1487186730
Verify Brian R. Ybarra 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 125.082617Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
72 Medicare Part D claims for 23 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
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.
Brian R. Ybarra among 7,238 internal medicine physician records in Illinois
Brian R. Ybarra 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 2021, is newer than 74% of them.
- NPI issued2021 · 74% of these records are older, 22% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2026 · 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).
62 internal medicine physician records list a practice address in Oak Park
They are 62 of the 2,307 NPPES records with a practice address in Oak Park, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Oak Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Sheba Chiplunkar, M.D.Oak Park, IL 603041356374656
- Bernard Coniglio, M.D.Oak Park, IL 603041124085568
- Marie Feldman, MDOak Park, IL 603041841386729
- Janet Forbes, M.D.Oak Park, IL 603041295838779
- Catalina Grija, M.D.Oak Park, IL 603041770793143
- Rita Gupta, M.D.Oak Park, IL 603041922117985
- Mohammad Khan, M.D.Oak Park, IL 603041487653838
- Catherine Koop, M.D.Oak Park, IL 603041851358972
Common questions
What is Brian R. Ybarra's NPI number?
Brian R. Ybarra's National Provider Identifier (NPI) is 1396328787, issued on May 3, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Brian R. Ybarra located?
The NPPES record lists a practice address at 520 S Maple Ave, Oak Park, IL, 60304. Phone: (708) 660-4445. Providers update this record themselves, so call before visiting.
How can I verify Brian R. Ybarra's license?
NPPES lists Illinois license number 125.082617, 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 Brian R. Ybarra prescribe under Medicare Part D?
In 2024, Brian R. Ybarra had 72 Medicare Part D claims for 23 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.