Jennifer L. Martens, FNP
Family Nurse Practitioner · O Fallon, IL
Jennifer L. Martens, FNP is a family nurse practitioner with a practice address in O Fallon, Illinois, and NPI 1336659523, issued on Oct 3, 2017. Check the license (Illinois 209016645, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Jennifer L. Martens
- Credential
- FNP
- Primary taxonomy
- Family Nurse Practitioner 363LF0000X
- License number
- 209016645 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1 Saint Elizabeth Blvd, O Fallon, IL 62269
- Phone
- (618) 234-2120
- Enumerated
- Oct 3, 2017
- Record last updated
- Sep 10, 2024
- Medicare enrollment
- Enrolled (PECOS I20171120002437); 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 1 Saint Elizabeth Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Amanda BurgesenCertified Registered Nurse Anesthetist1568084903
Verify Jennifer L. Martens in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209016645Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average family nurse practitioner in 2024
356 Medicare Part D claims for 132 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 7% of claims. 22 claims were for opioids.
Most prescribed
- Tamsulosin Hcl22 claims
- Furosemide17 claims
- Pantoprazole Sodium17 claims
- Isosorbide Mononitrate Er16 claims
- Potassium Chloride15 claims
- Hydrocodone-Acetaminophen14 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 90.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $84,278.95
133 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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.
Bills Medicare through 2 group practices
- Cep America-Illinois Hospitalists, LLPAlton, IL
- Southeastern Physician Services PCSaint Louis, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Jennifer L. Martens among 7,639 family nurse practitioner records in Illinois
Jennifer L. Martens, 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 2017, is newer than 37% of them.
- NPI issued2017 · 37% of these records are older, 56% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2014 · median 2018 among the 4,778 with a school on file
- Record last updated2024 · 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).
32 family nurse practitioner records list a practice address in O Fallon
They are 32 of the 1,077 NPPES records with a practice address in O Fallon, and 7,639 family nurse practitioner records in Illinois.
All 7,639 in Illinois → Every provider in O Fallon → Family Nurse Practitioner nationwide →
The 8 family nurse practitioner records with the nearest ZIP codes
- Amy Buck, APNO Fallon, IL 622691053587402
- Susan Drabing, FNP-BCO Fallon, IL 622691326345141
- Dawn Drewes, APNO Fallon, IL 622691700177763
- Sarah Durnell, FNPO Fallon, IL 622691235568700
- Brandy Holthaus, NPO Fallon, IL 622691972922953
- Richard Knight, MSN FNP-BCO Fallon, IL 622691992959282
- Ricki Loar, APNO Fallon, IL 622691194723312
- Gaylin Manion, FNPShiloh, IL 622691023497591
Common questions
What is Jennifer L. Martens, FNP's NPI number?
Jennifer L. Martens, FNP's National Provider Identifier (NPI) is 1336659523, issued on Oct 3, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Jennifer L. Martens, FNP located?
The NPPES record lists a practice address at 1 Saint Elizabeth Blvd, O Fallon, IL, 62269. Phone: (618) 234-2120. Providers update this record themselves, so call before visiting.
How can I verify Jennifer L. Martens, FNP's license?
NPPES lists Illinois license number 209016645, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Jennifer L. Martens, FNP prescribe under Medicare Part D?
In 2024, Jennifer L. Martens, FNP had 356 Medicare Part D claims for 132 beneficiaries; the average among family nurse practitioner prescribers was 1,305. Part D covers Medicare prescriptions only.
What is Jennifer L. Martens, FNP's MIPS final score?
The 2023 MIPS final score is 90.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.