Ariel Chavez, MD
Internal Medicine Physician · Chicago, IL
Ariel Chavez, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1902978257, issued on Nov 14, 2006. Check the license (Illinois 036054596, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Ariel Chavez
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036054596 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4608 S Ashland Ave, Chicago, IL 60609
- Phone
- (773) 927-7573
- Enumerated
- Nov 14, 2006
- Record last updated
- Apr 30, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (773) 927-7382
- Medicaid ID
- 036054596 IL
- Medicare enrollment
- Enrolled (PECOS I20100329000200); 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 4608 S Ashland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Eduardo Encinas, M.D.Obstetrics & Gynecology Physician1457430910
Verify Ariel Chavez 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 036054596Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
64% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,156 Medicare Part D claims for 124 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Atorvastatin Calcium56 claims
- Amlodipine Besylate51 claims
- Metformin Hcl50 claims
- Tamsulosin Hcl48 claims
- Metoprolol Succinate44 claims
- Losartan Potassium42 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.
Industry payments in 2024: $101.46
1 payment: food and beverage; the largest payer was Salix Pharmaceuticals, a division of Bausch Health US, LLC. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Ariel Chavez among 7,238 internal medicine physician records in Illinois
Ariel Chavez, 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
- Graduated1969 · median 2003 among the 3,580 with a school on file
- Record last updated2010 · 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).
2,867 internal medicine physician records list a practice address in Chicago
They are 2,867 of the 63,379 NPPES records with a practice address in Chicago, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Chicago → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Waldo Arteaga, MDChicago, IL 606091568498939
- Jacqueline Arteaga, MDChicago, IL 606091396922357
- David Brandt, M.D.Chicago, IL 606091629004965
- David Chan, M.D.Chicago, IL 606091629279948
- Scott Coppel, MDChicago, IL 606091801326681
- Anwar Jebran, MDChicago, IL 606091205356821
- Brian Kurtz, DOChicago, IL 606091831469253
- Charles Lawler, M.D.Chicago, IL 606091356324867
Common questions
What is Ariel Chavez, MD's NPI number?
Ariel Chavez, MD's National Provider Identifier (NPI) is 1902978257, issued on Nov 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ariel Chavez, MD located?
The NPPES record lists a practice address at 4608 S Ashland Ave, Chicago, IL, 60609. Phone: (773) 927-7573. Providers update this record themselves, so call before visiting.
How can I verify Ariel Chavez, MD's license?
NPPES lists Illinois license number 036054596, 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 Ariel Chavez, MD prescribe under Medicare Part D?
In 2024, Ariel Chavez, MD had 1,156 Medicare Part D claims for 124 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.