NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1588794713 APN
Verify on CMS → Marilou Johnson, APN
Family Nurse Practitioner in Galesburg, Illinois.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 210,832 in Family Nurse Practitioner, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
Federal data, no proprietary rating.
We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
998
Medicare Part D claims · 75 beneficiaries · Family Nurse Practitioner avg: 1K
What the federal data shows
Marilou Johnson, APN filed 998 Medicare Part D claims in 2023 as a Family Nurse Practitioner in Galesburg, Illinois.
- 998
- Part D claims, 2023
- ≥75th
- pct by Part D claim volume (lower-bound band)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Federal trust snapshot
What official records show about Marilou Johnson, APN
Bare NPI registry listing — limited federal enrichment beyond basic enumeration. Verify all credentials with official sources.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1588794713), first enumerated 03/06/2007.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 998 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Marilou Johnson, APN's individual license status. Verify directly with the state medical board.
Source: IDFPR annual report 2023
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1588794713 · Family Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1588794713
- ENUM-MID 2007
- TAX-MEGA 211K Family Nurse
- RX-LIGHT 998
- BOOK-MID 7,064 in Illinois
- PHOTO-ENUM Laurie Dula · 2007
Marilou Johnson, APN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
998 ≥ 75th percentile 75% of 1,370,886 prescribers are in lower value bands
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Marilou Johnson, APN?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
998 18% vs specialty avg
Specialty distribution in Illinois
How Family Nurse Practitioner compares to other specialties among Illinois providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Family Nurse Practitioner. Verify directly:
How MIPS and board certification work
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Practice Address
Provider Details
| NPI | 1588794713 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | APN |
| Gender | Female |
| NPI Issued | 03/06/2007 |
License & disciplinary context - Illinois IDFPR 2023 annual report
Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~42K Illinois medical licensees in 2023 - they are NOT specific to Marilou Johnson, APN. To verify Marilou Johnson, APN's current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
106
Total board actions, Illinois 2023
Across 103 cases
2.52
Actions per 1,000 licensees
Illinois statewide rate
probation
Most common action type
38 cases
IDFPR publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
998
Total Claims
$62K
Total Drug Cost
75
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,655
- Total Day Supply
- 46,202
- Generic Drug Cost
- $12K
- Opioid Claims
- 30 (3.0% rate)
- Antibiotic Claims
- 39
Patient Demographics
- Average Patient Age
- 66.5 years
- Avg HCC Risk Score
- 1.03
- Gender Split
- 75% female / 25% male
- Age Distribution
- <65: 25, 65-74: 30, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Marilou Johnson, APN prescribes most
Top Medicare Part D drugs by claim count, 2023
- Gabapentin
Gabapentin
67 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
52 claims
- Levothyroxine Sodium
Levothyroxine Sodium
42 claims
- Hydrochlorothiazide
Hydrochlorothiazide
33 claims
- Omeprazole
Omeprazole
33 claims
- Lisinopril
Lisinopril
28 claims
- Fluoxetine Hcl 22
Fluoxetine Hcl
22 claims
- Prednisone 21
Prednisone
21 claims
| Drug | Claims |
|---|---|
| Gabapentin | 67 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 52 |
| Levothyroxine Sodium | 42 |
| Hydrochlorothiazide | 33 |
| Omeprazole | 33 |
| Lisinopril | 28 |
| Fluoxetine Hcl | 22 |
| Prednisone | 21 |
| Eliquis Apixaban | 20 |
| Furosemide | 20 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Family Nurse Practitioner Overview
How Marilou Johnson, APN fits within the Family Nurse Practitioner landscape nationally.
210,832
Family Nurse Practitioner Providers in US
56
States with Family Nurse Practitioner
1,222
Avg Claims per Provider
Marilou Johnson, APN's 998 claims are below the specialty average of 1,222.
Nationwide Family Nurse Practitioner peers with similar MIPS or enrollment year
Two federal-record peer sets for Johnson, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2007)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Family Nurse Practitioner Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Johnson.
One of 7,064 Family Nurse Practitioner providers enrolled in Illinois, 5 are shown here.
Dr. Deborah Aaron
FNP
Chicago, IL
Dr. Lawrence Abah
APN
Aurora, IL
Theresa Abbadusky
Pekin, IL
Dr. Nadia Abbasi-Kling
FNP-BC
Chicago, IL
Dr. Manar Abdalla
FNP
Chicago, IL
Compare Family Nurse Practitioner nationally: see state-by-state distribution →
Frequently Asked Questions
What is Marilou Johnson, APN's specialty? ▼
Marilou Johnson, APN specializes in Family Nurse Practitioner and practices in Galesburg, Illinois. Credentials: APN.
How much does Marilou Johnson, APN prescribe under Medicare Part D? ▼
In 2023, Marilou Johnson, APN wrote 998 Medicare Part D claims totaling $62K in drug costs for 75 beneficiaries.
Where is Marilou Johnson, APN located? ▼
Marilou Johnson, APN is located at 834 N SEMINARY ST, Galesburg, IL, 61401. Phone: (309) 345-0394.
What is Marilou Johnson, APN's NPI number? ▼
Marilou Johnson, APN's National Provider Identifier (NPI) is 1588794713, issued on 03/06/2007.
Does Marilou Johnson, APN prescribe opioids? ▼
Yes, Marilou Johnson, APN had 30 opioid claims in 2023 with an opioid prescribing rate of 3.0%.
How many Family Nurse Practitioner providers are there in the US? ▼
There are 210,832 Family Nurse Practitioner providers across 56 states in the US. The average Family Nurse Practitioner provider writes 1,222 Medicare Part D claims per year.
What drugs does Marilou Johnson, APN prescribe most often? ▼
Based on 2023 Medicare Part D data, Marilou Johnson, APN's most frequently prescribed drugs include Gabapentin, Albuterol Sulfate Hfa, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Marilou Johnson, APN accept Medicare? ▼
Marilou Johnson, APN appears in CMS Medicare data with 998 Part D claims and 75 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Marilou Johnson, APN's credentials? ▼
Marilou Johnson, APN's NPI is 1588794713 with credentials APN. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.
Data Sources
View source datasets and methodology notes
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.