James F. Koop, M.D.
Internal Medicine Physician · Melrose Park, IL
James F. Koop, M.D. is an internal medicine physician with a practice address in Melrose Park, Illinois, and NPI 1255420451, issued on Oct 12, 2006. Check the license (Illinois 036086979, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- James F. Koop
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 036086979 IL
Self-reported in NPPES; status is on the state search - Practice location
- 675 W North Ave, Melrose Park, IL 60160
- Phone
- (708) 450-5070
- Enumerated
- Oct 12, 2006
- Record last updated
- Mar 30, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (708) 450-5078
- Medicare enrollment
- Enrolled (PECOS I20081029000564); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,238 in Illinois → Look up another NPI →
Also registered at 675 W North Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James F. Koop 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 036086979Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.8 times the Medicare Part D claims of the average internal medicine physician in 2024
8,943 Medicare Part D claims for 654 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 145 claims were for opioids.
Most prescribed
- Atorvastatin Calcium747 claims
- Amlodipine Besylate496 claims
- Losartan Potassium311 claims
- Metoprolol Succinate302 claims
- Levothyroxine Sodium293 claims
- Simvastatin273 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: $806.10
38 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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.
Bills Medicare through one group practice
- Elio M Vento MD And Associates SCElgin, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James F. Koop among 7,238 internal medicine physician records in Illinois
James F. Koop, M.D. 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 fileYes · 50% of these records are
- Graduated1991 · median 2003 among the 3,580 with a school on file
- Record last updated2011 · 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).
23 internal medicine physician records list a practice address in Melrose Park
They are 23 of the 634 NPPES records with a practice address in Melrose Park, and 7,238 internal medicine physician records in Illinois.
All 7,238 in Illinois → Every provider in Melrose Park → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Hema Azad, MDMelrose Park, IL 601601669523825
- Leonard Dubin, M.D.Melrose Park, IL 601601518976737
- Jaime Escobar, MDMelrose Park, IL 601601831227818
- Peter Eupierre, M.D.Melrose Park, IL 601601528069481
- Michelle Kassen, M.D., MPHMelrose Park, IL 601601366422321
- Glenn Kushner, MDMelrose Park, IL 601601659355295
- Anthony Martino, M.D.Melrose Park, IL 601601457319337
- Suzanne Pham, M.D.Melrose Park, IL 601601659537298
Common questions
What is James F. Koop, M.D.'s NPI number?
James F. Koop, M.D.'s National Provider Identifier (NPI) is 1255420451, issued on Oct 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James F. Koop, M.D. located?
The NPPES record lists a practice address at 675 W North Ave, Melrose Park, IL, 60160. Phone: (708) 450-5070. Providers update this record themselves, so call before visiting.
How can I verify James F. Koop, M.D.'s license?
NPPES lists Illinois license number 036086979, 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 F. Koop, M.D. prescribe under Medicare Part D?
In 2024, James F. Koop, M.D. had 8,943 Medicare Part D claims for 654 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.