Mark Andrew Kostko, DDS
Dentist · Wheaton, IL
Mark Andrew Kostko, DDS is a dentist with a practice address in Wheaton, Illinois, and NPI 1790853323, issued on Dec 1, 2006. Check the license with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark Andrew Kostko
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- Practice location
- 55 East Loop RD, Wheaton, IL 60187
- Phone
- (630) 653-8899
- Enumerated
- Dec 1, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (630) 653-8957
- Entity
- Type 1 · individual
8 nearest dentist records → All 4,522 in Illinois → Look up another NPI →
Also registered at 55 East Loop RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Patrick Livingood, DCChiropractor1043305667
Verify Mark Andrew Kostko in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average dentist in 2024
94 Medicare Part D claims for 68 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin77 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.
Mark Andrew Kostko among 4,522 dentist records in Illinois
Mark Andrew Kostko, DDS is one of 4,522 dentist records with a practice address in Illinois. 64% 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 2% of them.
- NPI issued2006 · 2% of these records are older, 81% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2007 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dentist providers in Illinois
There are 4,522 dentist records in Illinois.
All 4,522 in Illinois → Every provider in Wheaton → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- David Abbott, D.D.S.Wheaton, IL 601871114133733
- Terry Anderson, DDSWheaton, IL 601871821175928
- Jill Castline, DDSWheaton, IL 601871134261118
- Elisa Crandell, DDSWheaton, IL 601871760550347
- Matthew Crowe, DDSWheaton, IL 601871932277522
- Martin Dettmer, D.D.S.Wheaton, IL 601871194730549
- Glenn Evans, D.D.S.Wheaton, IL 601871538142492
- Mary Hatzis, DDSWheaton, IL 601871568538106
Common questions
What is Mark Andrew Kostko, DDS's NPI number?
Mark Andrew Kostko, DDS's National Provider Identifier (NPI) is 1790853323, issued on Dec 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Andrew Kostko, DDS located?
The NPPES record lists a practice address at 55 East Loop RD, Wheaton, IL, 60187. Phone: (630) 653-8899. Providers update this record themselves, so call before visiting.
How can I verify Mark Andrew Kostko, DDS's license?
Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Mark Andrew Kostko, DDS prescribe under Medicare Part D?
In 2024, Mark Andrew Kostko, DDS had 94 Medicare Part D claims for 68 beneficiaries; the average among dentist prescribers was 86. 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.