Catalina Anca Grija, M.D.
Internal Medicine Physician · Oak Park, IL
Catalina Anca Grija, M.D. is an internal medicine physician with a practice address in Oak Park, Illinois, and NPI 1770793143, issued on May 23, 2007. Check the license (Illinois 036096835, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Catalina Anca Grija
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036096835 IL
Self-reported in NPPES; status is on the state search - Practice location
- 917 S Oak Park Ave, Oak Park, IL 60304
- Phone
- (708) 358-1299
- Enumerated
- May 23, 2007
- Record last updated
- Oct 11, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (708) 358-1418
- Medicaid ID
- 036096835 IL
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 917 S Oak Park Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cheryl Chastine, M.D.Family Medicine Physician1831325505
Verify Catalina Anca Grija 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 036096835Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average internal medicine physician in 2024
85 Medicare Part D claims for 14 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.
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.
Catalina Anca Grija among 7,238 internal medicine physician records in Illinois
Catalina Anca Grija, 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 fileNo · 50% of these records are
- Record last updated2011 · 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
- Rita Gupta, M.D.Oak Park, IL 603041922117985
- Mohammad Khan, M.D.Oak Park, IL 603041487653838
- Catherine Koop, M.D.Oak Park, IL 603041851358972
- James Miller, M.D.Oak Park, IL 603041730298886
Common questions
What is Catalina Anca Grija, M.D.'s NPI number?
Catalina Anca Grija, M.D.'s National Provider Identifier (NPI) is 1770793143, issued on May 23, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Catalina Anca Grija, M.D. located?
The NPPES record lists a practice address at 917 S Oak Park Ave, Oak Park, IL, 60304. Phone: (708) 358-1299. Providers update this record themselves, so call before visiting.
How can I verify Catalina Anca Grija, M.D.'s license?
NPPES lists Illinois license number 036096835, 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 Catalina Anca Grija, M.D. prescribe under Medicare Part D?
In 2024, Catalina Anca Grija, M.D. had 85 Medicare Part D claims for 14 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.