Karen Maher, FNP
Family Nurse Practitioner · Rockford, IL
Karen Maher, FNP is a family nurse practitioner with a practice address in Rockford, Illinois, and NPI 1306297007, issued on Jun 24, 2016. Check the license (Illinois 209014377, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Maher
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209014377 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1200 W State St, Rockford, IL 61102
- Phone
- (815) 490-1600
- Enumerated
- Jun 24, 2016
- Record last updated
- Jun 24, 2016 (not updated in 10 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest family nurse practitioner records → All 7,639 in Illinois → Look up another NPI →
Also registered at 1200 W State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karen Maher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209014377Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average family nurse practitioner in 2024
4,538 Medicare Part D claims for 337 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims. 75 claims were for opioids.
Most prescribed
- Atorvastatin Calcium260 claims
- Biktarvy242 claims
- Amlodipine Besylate213 claims
- Albuterol Sulfate Hfa169 claims
- Genvoya156 claims
- Gabapentin152 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: $65.95
2 payments; by number, the most common kind was food and beverage; the largest payer was Ethicon US, LLC. The 99,489 providers of this specialty with any payment received $650.95 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.
Karen Maher among 7,639 family nurse practitioner records in Illinois
Karen Maher, FNP 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 2016, is newer than 30% of them.
- NPI issued2016 · 30% of these records are older, 63% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- 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).
236 family nurse practitioner records list a practice address in Rockford
They are 236 of the 3,893 NPPES records with a practice address in Rockford, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in Rockford → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Elizabeth Blair, APNRockford, IL 611021689657660
- Michelle Brady, F.N.P.Rockford, IL 611021396735379
- Tricia Corrigan, APNRockford, IL 611021316112808
- Kerin Cummins, APNRockford, IL 611021023446770
- Jeanne Dall, APNRockford, IL 611021548661937
- Traci Digvonni, FNPRockford, IL 611021225586514
- Jacqueline GonzalezRockford, IL 611021528585056
- Leonard Hitz, MSN/BC-FNP/APNRockford, IL 611021669555199
Common questions
What is Karen Maher, FNP's NPI number?
Karen Maher, FNP's National Provider Identifier (NPI) is 1306297007, issued on Jun 24, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Karen Maher, FNP located?
The NPPES record lists a practice address at 1200 W State St, Rockford, IL, 61102. Phone: (815) 490-1600. Providers update this record themselves, so call before visiting.
How can I verify Karen Maher, FNP's license?
NPPES lists Illinois license number 209014377, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Maher, FNP prescribe under Medicare Part D?
In 2024, Karen Maher, FNP had 4,538 Medicare Part D claims for 337 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.