NPI registry status
Active
2026 NPPES data Family Nurse Practitioner NPI 1326476433 PMHNP-BC
Verify on CMS → Karen Fields, PMHNP-BC
Family Nurse Practitioner in South Holland, 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
682
Medicare Part D claims · 54 beneficiaries · Family Nurse Practitioner avg: 1K
Generic prescribing
89%
generic claims · 11% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$687.03
19 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Karen Fields, PMHNP-BC filed 682 Medicare Part D claims in 2023 as a Family Nurse Practitioner in South Holland, Illinois, prescribing 89% generic.
- 682
- Part D claims, 2023
- 89%
- generic prescribing
- $687.03
- industry payments (Sunshine Act)
- ≥69th
- 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 Karen Fields, PMHNP-BC
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 1326476433), first enumerated 10/29/2013.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 682 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Industry payment transparency
$687.03 in reported industry payments (19 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 Karen Fields, PMHNP-BC'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 1326476433 · Family Nurse Practitioner
NPI-10 · ENUM-MID · TAX-MEGA · RX-LIGHT · BOOK-MID · PHOTO-ENUM
- NPI-10 1326476433
- ENUM-MID 2013
- TAX-MEGA 211K Family Nurse
- RX-LIGHT 682
- BOOK-MID 7,064 in Illinois
- PHOTO-ENUM Lindsey Whang · 2013
Karen Fields, PMHNP-BC's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
682 ≥ 69th percentile 69% 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 Karen Fields, PMHNP-BC?
Quality data not reportedPrimary specialty
Family Nurse Practitioner
Medicare Part D claims
682 44% 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 | 1326476433 |
|---|---|
| Specialty | Family Nurse Practitioner |
| Credentials | PMHNP-BC |
| Gender | Female |
| NPI Issued | 10/29/2013 |
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 Karen Fields, PMHNP-BC. Source: openpaymentsdata.cms.gov.
Total received
$687
Largest payer
Almatica Pharma LLC
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 Karen Fields, PMHNP-BC. To verify Karen Fields, PMHNP-BC'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.
Brand vs generic prescribing mix · Typical
Karen Fields, PMHNP-BC - brand share 11.0%
Family Nurse Practitioner average
11% brand-name claims vs 89% generic, on 682 2023 Medicare Part D claims.
The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
682
Total Claims
$168K
Total Drug Cost
54
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 1,158
- Total Day Supply
- 34,118
- Brand vs Generic
- 11% brand / 89% generic
- Brand Drug Cost
- $147K
- Generic Drug Cost
- $22K
Patient Demographics
- Average Patient Age
- 59.1 years
- Avg HCC Risk Score
- 1.48
- Gender Split
- 65% female / 35% male
- Age Distribution
- <65: 31, 65-74: 16, 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 Karen Fields, PMHNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Methylphenidate Hcl
Methylphenidate Hcl
63 claims
- Buspirone Hcl
Buspirone Hcl
39 claims
- Lamotrigine
Lamotrigine
39 claims
- Olanzapine
Olanzapine
36 claims
- Lorazepam
Lorazepam
33 claims
- Trazodone Hcl
Trazodone Hcl
30 claims
- Rexulti
Rexulti
26 claims
- Benztropine Mesylate 20
Benztropine Mesylate
20 claims
| Drug | Claims |
|---|---|
| Methylphenidate Hcl | 63 |
| Buspirone Hcl | 39 |
| Lamotrigine | 39 |
| Olanzapine | 36 |
| Lorazepam | 33 |
| Trazodone Hcl | 30 |
| Rexulti Brexpiprazole | 26 |
| Benztropine Mesylate | 20 |
| Fluvoxamine Maleate | 20 |
| Bupropion Xl Bupropion Hcl | 17 |
* 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 Karen Fields, PMHNP-BC 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
Karen Fields, PMHNP-BC's 682 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 Fields, both outside Illinois so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2013)
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 Fields.
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 Karen Fields, PMHNP-BC's specialty? ▼
Karen Fields, PMHNP-BC specializes in Family Nurse Practitioner and practices in South Holland, Illinois. Credentials: PMHNP-BC.
How much does Karen Fields, PMHNP-BC prescribe under Medicare Part D? ▼
In 2023, Karen Fields, PMHNP-BC wrote 682 Medicare Part D claims totaling $168K in drug costs for 54 beneficiaries.
Where is Karen Fields, PMHNP-BC located? ▼
Karen Fields, PMHNP-BC is located at 16456 DOBSON AVE, South Holland, IL, 60473. Phone: (773) 241-9300.
What is Karen Fields, PMHNP-BC's NPI number? ▼
Karen Fields, PMHNP-BC's National Provider Identifier (NPI) is 1326476433, issued on 10/29/2013.
Does Karen Fields, PMHNP-BC prescribe more brand-name or generic drugs? ▼
Karen Fields, PMHNP-BC's prescribing is 11% brand-name and 89% generic drugs by claim count, with $147K in brand drug costs.
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 Karen Fields, PMHNP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Karen Fields, PMHNP-BC's most frequently prescribed drugs include Methylphenidate Hcl, Buspirone Hcl, Lamotrigine. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Karen Fields, PMHNP-BC accept Medicare? ▼
Karen Fields, PMHNP-BC appears in CMS Medicare data with 682 Part D claims and 54 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Karen Fields, PMHNP-BC's credentials? ▼
Karen Fields, PMHNP-BC's NPI is 1326476433 with credentials PMHNP-BC. 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.