James Van Siatras, D.O.
Surgery Physician · Olympia Fields, IL
James Van Siatras, D.O. is a surgery physician with a practice address in Olympia Fields, Illinois, and NPI 1164672572, issued on Sep 22, 2008. Check the license (Illinois 125050873, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- James Van Siatras
- Credential
- D.O.
- Primary taxonomy
- Surgery Physician 208600000X
- License number
- 125050873 IL
Self-reported in NPPES; status is on the state search - Practice location
- 20201 Crawford Ave, Olympia Fields, IL 60461
- Phone
- (708) 747-4000
- Enumerated
- Sep 22, 2008
- Record last updated
- Sep 22, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20120223000672); accepts Medicare assignment
- Medical or professional school
- Chicago College Of Osteopathy, 2006
- Entity
- Type 1 · individual
8 nearest surgery physician records → All 1,520 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.
- Marwa Abdul BasithStudent in an Organized Health Care Education/Training Program1215870654
- Veronica Abegunde, MDHospitalist Physician1740500826
- Amir Abusharif, DOStudent in an Organized Health Care Education/Training Program1619663986
- Gremah Adam Aboubacar, DOStudent in an Organized Health Care Education/Training Program1619662392
- Tejaswini Addanki, DOStudent in an Organized Health Care Education/Training Program1306589163
- Saria Adnan Sultan, DOInternal Medicine Physician1679216196
Verify James Van Siatras 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 125050873Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average surgery physician in 2024
55 Medicare Part D claims for 30 beneficiaries, against an average of 147 among the 20,115 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 15 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen12 claims
- Omeprazole11 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.
Industry payments in 2024: $239.49
8 payments; by number, the most common kind was food and beverage; the largest payer was Intuitive Surgical, Inc. The 17,103 providers of this specialty with any payment received $3,513.80 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.
Bills Medicare through one group practice
- Indiana Surgical Associates PCHobart, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Van Siatras among 1,520 surgery physician records in Illinois
James Van Siatras, D.O. is one of 1,520 surgery physician records with a practice address in Illinois. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 42% of them.
- NPI issued2008 · 42% of these records are older, 52% newer
- In a Medicare fileYes · 66% of these records are
- In the CMS Doctors and Clinicians fileYes · 43% of these records are
- Graduated2006 · median 2004 among the 650 with a school on file
- Record last updated2008 · 49% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
11 surgery physician records list a practice address in Olympia Fields
They are 11 of the 684 NPPES records with a practice address in Olympia Fields, and 1,520 surgery physician records in Illinois.
All 1,520 in Illinois → Every provider in Olympia Fields → Surgery Physician nationwide →
The 8 surgery physician records with the nearest ZIP codes
- Gerald Cahill, M.D.Olympia Fields, IL 604611346357795
- Roseanne Krinski, M.D.Olympia Fields, IL 604611841256492
- Jonathon KuoOlympia Fields, IL 604611184205296
- Devan Lenhart, DOOlympia Fields, IL 604611275038176
- Matthew Martens, D.O.Olympia Fields, IL 604611275761603
- Evan Mazurkiewicz, DOOlympia Fields, IL 604611942905435
- Ankeeta Mehta, D.O.Olympia Fields, IL 604611770960080
- Federico Pinto, MDOlympia Fields, IL 604611356191175
Common questions
What is James Van Siatras, D.O.'s NPI number?
James Van Siatras, D.O.'s National Provider Identifier (NPI) is 1164672572, issued on Sep 22, 2008. An NPI identifies a provider in billing; it is not a license.
Where is James Van Siatras, D.O. 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 James Van Siatras, D.O.'s license?
NPPES lists Illinois license number 125050873, 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 James Van Siatras, D.O. prescribe under Medicare Part D?
In 2024, James Van Siatras, D.O. had 55 Medicare Part D claims for 30 beneficiaries; the average among surgery physician prescribers was 147. 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.