NPI registry status
Active
2026 NPPES data Registered Nurse NPI 1215523345 APN
Verify on CMS → Maria Wolter, APN
Registered Nurse in Oak Brook, 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 185,440 in Registered Nurse, 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
668
Medicare Part D claims · 134 beneficiaries · Registered Nurse avg: 1K
Industry payments
$2.6K
130 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Maria Wolter, APN filed 668 Medicare Part D claims in 2024 as a Registered Nurse in Oak Brook, Illinois.
- 668
- Part D claims, 2024
- $2.6K
- industry payments (Sunshine Act)
- ≥68th
- 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 Maria Wolter, APN
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1215523345), first enumerated 12/13/2020.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 668 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Hospital affiliations
1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.
Source: CMS Care Compare
- Reported
Industry payment transparency
$2.6K in reported industry payments (130 transfers) in 2024 under the federal Sunshine Act — disclosed transfers of value, not a quality rating.
Source: CMS Open Payments
- State context
State board disciplinary context
Illinois statewide board action statistics are published annually — these figures describe aggregate state activity, not Maria Wolter, 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 1215523345 · Registered Nurse
NPI-10 · ENUM-RECENT · TAX-MEGA · RX-LIGHT · BOOK-LIGHT · PHOTO-ENUM
- NPI-10 1215523345
- ENUM-RECENT 2020
- TAX-MEGA 185K Registered Nurse
- RX-LIGHT 668
- BOOK-LIGHT 3,996 in Illinois
- PHOTO-ENUM Philomina Fon · 2020
Maria Wolter, APN's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
668 ≥ 68th percentile 68% of 1,416,883 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 · 2024
What does the federal data show about Maria Wolter, APN?
Quality data not reportedPrimary specialty
Registered Nurse
Medicare Part D claims
668 37% vs specialty avg
Specialty distribution in Illinois
How Registered Nurse 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 Registered Nurse. 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 | 1215523345 |
|---|---|
| Specialty | Registered Nurse |
| Credentials | APN |
| Gender | Female |
| NPI Issued | 12/13/2020 |
Hospital and facility affiliations
Facilities where Maria Wolter, APN bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Dupage Medical Group Ltd
Schaumburg, IL
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Maria Wolter, APN. Source: openpaymentsdata.cms.gov.
Total received
$2.6K
Largest payer
ABBVIE INC.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
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 Maria Wolter, APN. To verify Maria Wolter, 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 2024.
668
Total Claims
$411K
Total Drug Cost
134
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,381.833
- Total Day Supply
- 40,535
- Generic Drug Cost
- $6K
Patient Demographics
- Average Patient Age
- 69.9 years
- Avg HCC Risk Score
- 1.09
- Gender Split
- 78% female / 22% male
- Age Distribution
- <65: 26, 65-74: 81, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
What Maria Wolter, APN prescribes most
Top Medicare Part D drugs by claim count, 2024
- Metformin Hcl Er
Metformin Hcl Er
134 claims
- Mounjaro
Mounjaro
110 claims
- Ozempic
Ozempic
104 claims
- Topiramate 47
Topiramate
47 claims
- Trulicity 28
Trulicity
28 claims
- Naltrexone Hcl 18
Naltrexone Hcl
18 claims
- Levothyroxine Sodium 17
Levothyroxine Sodium
17 claims
- Bupropion Xl 14
Bupropion Xl
14 claims
| Drug | Claims |
|---|---|
| Metformin Hcl Er Metformin Hcl | 134 |
| Mounjaro Tirzepatide | 110 |
| Ozempic Semaglutide | 104 |
| Topiramate | 47 |
| Trulicity Dulaglutide | 28 |
| Naltrexone Hcl | 18 |
| Levothyroxine Sodium | 17 |
| Bupropion Xl Bupropion Hcl | 14 |
| Bupropion Hcl | 12 |
| Jardiance Empagliflozin | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Registered Nurse Overview
How Maria Wolter, APN fits within the Registered Nurse landscape nationally.
185,440
Registered Nurse Providers in US
56
States with Registered Nurse
1,063
Avg Claims per Provider
Maria Wolter, APN's 668 claims are below the specialty average of 1,063.
Nationwide Registered Nurse peers with similar MIPS or enrollment year
Two federal-record peer sets for Wolter, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2020)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Registered Nurse Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as Wolter.
One of 3,996 Registered Nurse providers enrolled in Illinois, 5 are shown here.
Crystal Aandahl
FNP
North Chicago, IL
Hannah Aba
RN
Lombard, IL
Rowena Abasolo
A.P.N.
Elk Grove Village, IL
Rashidah Abdullah
CNM, RN, CBC, CLC
Chicago, IL
Mercy Abunaw
FNP-C
Rockford, IL
Compare Registered Nurse nationally: see state-by-state distribution →
Frequently Asked Questions
What is Maria Wolter, APN's specialty? ▼
Maria Wolter, APN specializes in Registered Nurse and practices in Oak Brook, Illinois. Credentials: APN.
How much does Maria Wolter, APN prescribe under Medicare Part D? ▼
In 2024, Maria Wolter, APN wrote 668 Medicare Part D claims totaling $411K in drug costs for 134 beneficiaries.
Where is Maria Wolter, APN located? ▼
Maria Wolter, APN is located at 3011 BUTTERFIELD RD STE 240, Oak Brook, IL, 60523. Phone: (630) 348-3840.
What is Maria Wolter, APN's NPI number? ▼
Maria Wolter, APN's National Provider Identifier (NPI) is 1215523345, issued on 12/13/2020.
How many Registered Nurse providers are there in the US? ▼
There are 185,440 Registered Nurse providers across 56 states in the US. The average Registered Nurse provider writes 1,063 Medicare Part D claims per year.
What drugs does Maria Wolter, APN prescribe most often? ▼
Based on 2024 Medicare Part D data, Maria Wolter, APN's most frequently prescribed drugs include Metformin Hcl Er, Mounjaro, Ozempic. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Maria Wolter, APN accept Medicare? ▼
Maria Wolter, APN appears in CMS Medicare data with 668 Part D claims and 134 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Maria Wolter, APN's credentials? ▼
Maria Wolter, APN's NPI is 1215523345 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.