Augusto Guevara
Internal Medicine Physician · Oak Park, IL
Augusto Guevara is an internal medicine physician with a practice address in Oak Park, Illinois, and NPI 1962557686, issued on Jan 24, 2007. Check the license (Illinois 36-091726, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Augusto Guevara
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 36-091726 IL
Self-reported in NPPES; status is on the state search - Practice location
- 18 Chicago Ave, Oak Park, IL 60302
- Phone
- (773) 253-3933
- Enumerated
- Jan 24, 2007
- Record last updated
- Sep 17, 2025
- Fax
- (773) 437-6780
- Medicare enrollment
- Enrolled (PECOS I20100714000827); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 18 Chicago Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ashley Cohen, MSN, APRN, FNP-CFamily Nurse Practitioner1689269698
- Marques Cosby, LCSWClinical Social Worker1619625795
Verify Augusto Guevara 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 36-091726Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average internal medicine physician in 2024
3,321 Medicare Part D claims for 164 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 182 claims were for opioids.
Most prescribed
- Atorvastatin Calcium251 claims
- Eliquis123 claims
- Losartan Potassium81 claims
- Pantoprazole Sodium79 claims
- Tamsulosin Hcl79 claims
- Albuterol Sulfate Hfa77 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
- Oak Street Health Physicians Group PCOak Park, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Augusto Guevara among 7,238 internal medicine physician records in Illinois
Augusto Guevara 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
- Graduated1992 · median 2003 among the 3,580 with a school on file
- Record last updated2025 · 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
- Thomas Albert, D.C., M.D.Oak Park, IL 603021457465098
- Alejandra Campos, M.D.Oak Park, IL 603021932195146
- Wahiba Elhag, M.D.Oak Park, IL 603021982891826
- Charles Johnston, MDOak Park, IL 603021831288422
- Khurram Khan, M.D.Oak Park, IL 603021730370586
- Katarzyna Kielczyk, M.D.Oak Park, IL 603021194922203
- Esteban Linarez, M.D.Oak Park, IL 603021740483262
- Dheeraj Mahajan, M.D.Oak Park, IL 603021831133693
Common questions
What is Augusto Guevara's NPI number?
Augusto Guevara's National Provider Identifier (NPI) is 1962557686, issued on Jan 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Augusto Guevara located?
The NPPES record lists a practice address at 18 Chicago Ave, Oak Park, IL, 60302. Phone: (773) 253-3933. Providers update this record themselves, so call before visiting.
How can I verify Augusto Guevara's license?
NPPES lists Illinois license number 36-091726, 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 Augusto Guevara prescribe under Medicare Part D?
In 2024, Augusto Guevara had 3,321 Medicare Part D claims for 164 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.