Tia Kostas
Geriatric Medicine (Internal Medicine) Physician · Chicago, IL
Tia Kostas is a geriatric medicine (internal medicine) physician with a practice address in Chicago, Illinois, and NPI 1174722409, issued on Jul 17, 2007. Check the license (Illinois 036134139, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Tia Kostas
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- 036134139 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S Maryland Ave, Chicago, IL 60637
- Phone
- (888) 824-0200
- Enumerated
- Jul 17, 2007
- Record last updated
- Oct 24, 2022
- Medicare enrollment
- Enrolled (PECOS I20140411001395); accepts Medicare assignment
- Medical or professional school
- Mayo Medical School, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 179 in Illinois → Look up another NPI →
Also registered at 5841 S Maryland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tia Kostas 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 036134139Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
19% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
3,450 Medicare Part D claims for 285 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 119 claims were for opioids.
Most prescribed
- Amlodipine Besylate273 claims
- Atorvastatin Calcium241 claims
- Losartan Potassium116 claims
- Rosuvastatin Calcium99 claims
- Carvedilol94 claims
- Gabapentin94 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): 97.7 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).
Bills Medicare through one group practice
- University OF ChicagoChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tia Kostas among 179 geriatric medicine (internal medicine) physician records in Illinois
Tia Kostas is one of 179 geriatric medicine (internal medicine) physician records with a practice address in Illinois. 71% 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 60% of them.
- NPI issued2007 · 60% of these records are older, 25% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 42% of these records are
- Graduated2007 · median 1997 among the 76 with a school on file
- Record last updated2022 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Illinois
There are 179 geriatric medicine (internal medicine) physician records in Illinois.
All 179 in Illinois → Every provider in Chicago → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Kellie Campbell, M.D.Chicago, IL 606371720281611
- Lauren GleasonChicago, IL 606371780826560
- Amit Grewal, MDChicago, IL 606371164124814
- Thomas Haferkamp, MDChicago, IL 606371851913503
- Megan Huisingh-ScheetzChicago, IL 606371720273063
- Samantha IngChicago, IL 606371306328661
- Changgi Jung, MDChicago, IL 606371275054082
- Patricia Lee, MDChicago, IL 606371811525579
Common questions
What is Tia Kostas's NPI number?
Tia Kostas's National Provider Identifier (NPI) is 1174722409, issued on Jul 17, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Tia Kostas located?
The NPPES record lists a practice address at 5841 S Maryland Ave, Chicago, IL, 60637. Phone: (888) 824-0200. Providers update this record themselves, so call before visiting.
How can I verify Tia Kostas's license?
NPPES lists Illinois license number 036134139, 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 Tia Kostas prescribe under Medicare Part D?
In 2024, Tia Kostas had 3,450 Medicare Part D claims for 285 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. Part D covers Medicare prescriptions only.
What is Tia Kostas's MIPS final score?
The 2023 MIPS final score is 97.7 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.