Demetrios J. Giokaris, MD
Internal Medicine Physician · Chicago, IL
Demetrios J. Giokaris, MD is an internal medicine physician with a practice address in Chicago, Illinois, and NPI 1871501825, issued on Aug 4, 2006. Check the license (Illinois 036066354, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Demetrios J. Giokaris
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036066354 IL
Self-reported in NPPES; status is on the state search - Practice location
- 4921 N Western Avenue, Chicago, IL 60625
- Phone
- (773) 784-9669
- Enumerated
- Aug 4, 2006
- Record last updated
- Mar 27, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (773) 989-6442
- Medicaid ID
- 36066354 IL
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Verify Demetrios J. Giokaris 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 036066354Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.4 times the Medicare Part D claims of the average internal medicine physician in 2024
7,489 Medicare Part D claims for 465 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
- Levothyroxine Sodium296 claims
- Pantoprazole Sodium293 claims
- Amoxicillin-Clavulanate Potass290 claims
- Amlodipine Besylate271 claims
- Metformin Hcl255 claims
- Ramipril196 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): 17.4 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).
Industry payments in 2024: $448.17
20 payments; by number, the most common kind was food and beverage; the largest payer was Otsuka America Pharmaceutical, Inc. 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.
Demetrios J. Giokaris among 7,238 internal medicine physician records in Illinois
Demetrios J. Giokaris, 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 fileNo · 50% of these records are
- Record last updated2015 · 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 →
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Common questions
What is Demetrios J. Giokaris, MD's NPI number?
Demetrios J. Giokaris, MD's National Provider Identifier (NPI) is 1871501825, issued on Aug 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Demetrios J. Giokaris, MD located?
The NPPES record lists a practice address at 4921 N Western Avenue, Chicago, IL, 60625. Phone: (773) 784-9669. Providers update this record themselves, so call before visiting.
How can I verify Demetrios J. Giokaris, MD's license?
NPPES lists Illinois license number 036066354, 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 Demetrios J. Giokaris, MD prescribe under Medicare Part D?
In 2024, Demetrios J. Giokaris, MD had 7,489 Medicare Part D claims for 465 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Demetrios J. Giokaris, MD's MIPS final score?
The 2023 MIPS final score is 17.4 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.