John J. Karl, FNP-C
Nurse Practitioner · Olympia Fields, IL
John J. Karl, FNP-C is a nurse practitioner with a practice address in Olympia Fields, Illinois, and NPI 1487701728, issued on Jan 5, 2007. Check the license (Illinois 209019289, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John J. Karl
- Credential
- FNP-C
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 209019289 IL
041-258664 IL
041258664 IL
209.019289 IL
28163347A IN
and 1 more
Self-reported in NPPES; status is on the state search - Practice location
- 3700 W 203RD St Ste 302, Olympia Fields, IL 60461
- Phone
- (708) 679-2518
- Enumerated
- Jan 5, 2007
- Record last updated
- Oct 5, 2023
- Fax
- (708) 679-2519
- Medicare enrollment
- Enrolled (PECOS I20190703000819); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 3700 W 203RD St Ste 302
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Gerald Cahill, M.D.Surgery Physician1346357795
- Megan Gac, FNPFamily Nurse Practitioner1144992264
Verify John J. Karl in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209019289Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average nurse practitioner in 2024
60 Medicare Part D claims for 16 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 12 claims were for opioids.
Most prescribed
- Ondansetron Odt22 claims
- Gabapentin13 claims
- Hydrocodone-Acetaminophen11 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: $146.51
4 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 38,884 providers of this specialty with any payment received $791.64 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 2 group practices
- Franciscan Physician NetworkDyer, IN
- Specialty Physicians OF Illinois LLCOlympia Fields, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John J. Karl among 4,892 nurse practitioner records in Illinois
John J. Karl, FNP-C is one of 4,892 nurse practitioner records with a practice address in Illinois. 81% 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 11% of them.
- NPI issued2007 · 11% of these records are older, 85% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2018 · median 2018 among the 3,389 with a school on file
- Record last updated2023 · 36% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
8 nurse practitioner records list a practice address in Olympia Fields
They are 8 of the 684 NPPES records with a practice address in Olympia Fields, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in Olympia Fields → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Beata Bogdan, FNPOlympia Fields, IL 604611891537817
- Krystyne Doty, APNOlympia Fields, IL 604611992258438
- Aundrea GoodenOlympia Fields, IL 604611689061855
- Uwaila Iyengunmwena IrediaOlympia Flds, IL 604611366068520
- Courtney Miller, NPOlympia Fields, IL 604611629435060
- Alaine Tenedor, NPOlympia Fields, IL 604611891461109
- Shenell Thomas, FNPOlympia Fields, IL 604611316304637
- Kimberly Wicks, FNP-BCOlympia Fields, IL 604611710381181
Common questions
What is John J. Karl, FNP-C's NPI number?
John J. Karl, FNP-C's National Provider Identifier (NPI) is 1487701728, issued on Jan 5, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John J. Karl, FNP-C located?
The NPPES record lists a practice address at 3700 W 203RD St Ste 302, Olympia Fields, IL, 60461. Phone: (708) 679-2518. Providers update this record themselves, so call before visiting.
How can I verify John J. Karl, FNP-C's license?
NPPES lists Illinois license number 209019289, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does John J. Karl, FNP-C prescribe under Medicare Part D?
In 2024, John J. Karl, FNP-C had 60 Medicare Part D claims for 16 beneficiaries; the average among nurse practitioner prescribers was 1,109. 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.