John Nicholas Kasimos, DO
Anatomic Pathology & Clinical Pathology Physician · Olympia Fields, IL
John Nicholas Kasimos, DO is an anatomic pathology & clinical pathology physician with a practice address in Olympia Fields, Illinois, and NPI 1295728194, issued on Aug 25, 2005. Check the license on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- John Nicholas Kasimos
- Credential
- DO
- Primary taxonomy
- Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
- Practice location
- 20201 Crawford Ave, Olympia Fields, IL 60461
- Phone
- (708) 747-4000
- Enumerated
- Aug 25, 2005
- Record last updated
- Apr 15, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (708) 503-3242
- Entity
- Type 1 · individual
8 nearest anatomic pathology & clinical pathology physician records → All 789 in Illinois → Look up another NPI →
Also registered at 20201 Crawford Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Saria Adnan Sultan, DOInternal Medicine Physician1679216196
Verify John Nicholas Kasimos in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional RegulationCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 81 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
John Nicholas Kasimos among 789 anatomic pathology & clinical pathology physician records in Illinois
John Nicholas Kasimos, DO is one of 789 anatomic pathology & clinical pathology physician records with a practice address in Illinois. 55% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 55% of these records are
- In the CMS Doctors and Clinicians fileNo · 50% of these records are
- Record last updated2008 · 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 207ZP0102X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Anatomic Pathology & Clinical Pathology Physician providers in Illinois
There are 789 anatomic pathology & clinical pathology physician records in Illinois.
All 789 in Illinois → Every provider in Olympia Fields → Anatomic Pathology & Clinical Pathology Physician nationwide →
The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes
- Mark Fritsch, MDOlympia Fields, IL 604611467445361
- Kalisha Hill, MDOlympia Fields, IL 604611851384754
- Mark Vangorder, MDOlympia Fields, IL 604611053304956
- Helen (min) Chen, M.D.Palos Heights, IL 604631124028022
- Julius Ringus, M.D.Palos Heights, IL 604631811956675
- Antoinette Sperelakis, M.D.Palos Heights, IL 604631184624074
- Caitlin Darrell, MDOak Lawn, IL 604531831509090
- Ritu GhaiOak Lawn, IL 604531013173962
Common questions
What is John Nicholas Kasimos, DO's NPI number?
John Nicholas Kasimos, DO's National Provider Identifier (NPI) is 1295728194, issued on Aug 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Nicholas Kasimos, DO located?
The NPPES record lists a practice address at 20201 Crawford Ave, Olympia Fields, IL, 60461. Phone: (708) 747-4000. Providers update this record themselves, so call before visiting.
How can I verify John Nicholas Kasimos, DO's license?
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.
What is John Nicholas Kasimos, DO's MIPS final score?
The 2023 MIPS final score is 81 of 100, reported for the practice group. 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.