Karen T. Keller
Family Nurse Practitioner · Chicago, IL
Karen T. Keller is a family nurse practitioner with a practice address in Chicago, Illinois, and NPI 1821411208, issued on Jan 21, 2014. Check the license (Illinois 209011228, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen T. Keller
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209011228 IL
Self-reported in NPPES; status is on the state search - Practice location
- 5841 S Maryland Ave, Chicago, IL 60637
- Phone
- (773) 926-9116
- Enumerated
- Jan 21, 2014
- Record last updated
- Apr 4, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140812001288); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 5841 S Maryland Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karen T. Keller in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209011228Check 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 family nurse practitioner in 2024
60 Medicare Part D claims for 18 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D.
Most prescribed
- Pantoprazole Sodium12 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.
Bills Medicare through one group practice
- Osf Multi-Specialty GroupEvergreen, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen T. Keller among 7,639 family nurse practitioner records in Illinois
Karen T. Keller is one of 7,639 family nurse practitioner records with a practice address in Illinois. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 20% of them.
- NPI issued2014 · 20% of these records are older, 76% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2013 · median 2018 among the 4,778 with a school on file
- Record last updated2016 · 39% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,567 family nurse practitioner records list a practice address in Chicago
They are 1,567 of the 63,379 NPPES records with a practice address in Chicago, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Chicago → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Donna Christian, APNChicago, IL 606371053440800
- Lauren CreightonChicago, IL 606371457642209
- Amanda HasseltineChicago, IL 606371184994741
- Karen Heffernan, FNPChicago, IL 606371265732457
- Jennifer LabasChicago, IL 606371326343310
- Abigail Morrow, APNChicago, IL 606371881918134
- Kathleen NagleChicago, IL 606371558648865
- Gianetta Norwood, NURSE PRACTITIONERChicago, IL 606371619250289
Common questions
What is Karen T. Keller's NPI number?
Karen T. Keller's National Provider Identifier (NPI) is 1821411208, issued on Jan 21, 2014. An NPI identifies a provider in billing; it is not a license.
Where is Karen T. Keller located?
The NPPES record lists a practice address at 5841 S Maryland Ave, Chicago, IL, 60637. Phone: (773) 926-9116. Providers update this record themselves, so call before visiting.
How can I verify Karen T. Keller's license?
NPPES lists Illinois license number 209011228, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Karen T. Keller prescribe under Medicare Part D?
In 2024, Karen T. Keller had 60 Medicare Part D claims for 18 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.