Mary L. Marshall, APN
Nurse Practitioner · Rockford, IL
Mary L. Marshall, APN is a nurse practitioner with a practice address in Rockford, Illinois, and NPI 1770030801, issued on Sep 7, 2016. Check the license (Illinois 209-014991, as entered in NPPES) with the Illinois board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary L. Marshall
- Credential
- APN
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- 209-014991 IL
041343459 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1340 Charles St, Rockford, IL 61104
- Phone
- (779) 696-5888
- Enumerated
- Sep 7, 2016
- Record last updated
- Oct 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20161025000117); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 4,892 in Illinois → Look up another NPI →
Also registered at 1340 Charles St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Nesher Asner, MDNeurological Surgery Physician1750363651
- Brittany BankordFamily Nurse Practitioner1861363665
- Mary Bohne, DNP, APRN, FNP-CFamily Nurse Practitioner1144612920
Verify Mary L. Marshall in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Illinois board licenses this profession
Search for license 209-014991Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.7 times the Medicare Part D claims of the average nurse practitioner in 2024
4,128 Medicare Part D claims for 789 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Metoprolol Succinate436 claims
- Atorvastatin Calcium344 claims
- Amlodipine Besylate289 claims
- Rosuvastatin Calcium270 claims
- Furosemide248 claims
- Carvedilol227 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: $10,774.97
34 payments; by number, the most common kind was travel and lodging; the largest payer was Intuitive Surgical, Inc. 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 one group practice
- Osf Multi-Specialty GroupRockford, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary L. Marshall among 4,892 nurse practitioner records in Illinois
Mary L. Marshall, APN 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 2016, is newer than 36% of them.
- NPI issued2016 · 36% of these records are older, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2016 · median 2018 among the 3,389 with a school on file
- Record last updated2016 · 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).
129 nurse practitioner records list a practice address in Rockford
They are 129 of the 3,893 NPPES records with a practice address in Rockford, and 4,892 nurse practitioner records in Illinois.
All 4,892 in Illinois → Every provider in Rockford → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Rebecca Behling, FNPRockford, IL 611041508060518
- Timothy Deming, N.P.Rockford, IL 611041023397064
- Heather Frey, N.P.Rockford, IL 611041033230016
- Michelle Fuller, APNRockford, IL 611041982086237
- Andrea Henrey, APNRockford, IL 611041750736039
- Danielle Jordal, APNRockford, IL 611041639429855
- Cynthia Kelling, APNRockford, IL 611041689027666
- Susan Korf, N.P.Rockford, IL 611041427295807
Common questions
What is Mary L. Marshall, APN's NPI number?
Mary L. Marshall, APN's National Provider Identifier (NPI) is 1770030801, issued on Sep 7, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Mary L. Marshall, APN located?
The NPPES record lists a practice address at 1340 Charles St, Rockford, IL, 61104. Phone: (779) 696-5888. Providers update this record themselves, so call before visiting.
How can I verify Mary L. Marshall, APN's license?
NPPES lists Illinois license number 209-014991, as entered by the provider. Search the Illinois board that licenses this profession; the NPPES record confirms identity only.
How much does Mary L. Marshall, APN prescribe under Medicare Part D?
In 2024, Mary L. Marshall, APN had 4,128 Medicare Part D claims for 789 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.