HOLLY CLARK, N.P.
Nurse Practitioner in ORLAND PARK, Illinois. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
HOLLY CLARK, N.P. filed 551 Medicare Part D claims in 2023 as a Nurse Practitioner in ORLAND PARK, Illinois, prescribing 91% generic.
- 551
- Part D claims, 2023
- 91%
- generic prescribing
- $1.7K
- industry payments (Sunshine Act)
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.
HOLLY CLARK, N.P.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
551 Top 34% higher than 66% of 1,370,886 prescribers
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.
Source CMS Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about HOLLY CLARK, N.P.?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Illinois
How Nurse Practitioner compares to other specialties among Illinois providers
Nurse Practitioner share within Illinois
Nurse Practitioner is one of the more visible NUCC categories in Illinois
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Nurse Practitioner (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Nurse Practitioner ABMS/AOA estimate
Est. board-certified rate (Nurse Practitioner) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Nurse Practitioner US NPIs
Specialty board-certified rate — Nurse Practitioner estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
HOLLY CLARK, N.P. appears in the CMS NPPES registry as a Nurse Practitioner provider holding N.P. credentials at 15300 WEST AVE STE 224, ORLAND PARK, IL, 60462, with a listed phone of (708) 923-8260. NPI 1205823093 was issued on 10/05/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CLARK most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.
Medicare Part D records for calendar year 2023 show 551 prescription claims written by this provider, covering 184 Medicare beneficiaries and totaling roughly $25K in drug spend, split 9% brand-name and 91% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.
Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1205823093 |
|---|---|
| Specialty | Nurse Practitioner |
| Credentials | N.P. |
| Gender | Female |
| NPI Issued | 10/05/2005 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm HOLLY CLARK, N.P.'s current license status, disciplinary history, and board certifications with the Illinois Department of Financial and Professional Regulation in Illinois before relying on this page for a clinical or care decision.
How we sourced this profile
Hospital and facility affiliations
Facilities where HOLLY CLARK, N.P. 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.
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 HOLLY CLARK, N.P.. Source: openpaymentsdata.cms.gov.
Total received
$1.7K
Largest payer
Lilly USA, 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 HOLLY CLARK, N.P.. To verify HOLLY CLARK, N.P.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
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 · Generic-heavy
9% brand-name claims vs 91% generic, on 551 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.
Prescribing Breakdown
- 30-Day Fills
- 1,091
- Total Day Supply
- 28,337
- Brand vs Generic
- 9% brand / 91% generic
- Brand Drug Cost
- $17K
- Generic Drug Cost
- $8K
- Antibiotic Claims
- 98
Patient Demographics
- Average Patient Age
- 73.5 years
- Avg HCC Risk Score
- 0.98
- Gender Split
- 65% female / 35% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What HOLLY CLARK, N.P. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Azithromycin
Azithromycin
33 claims
- Amlodipine Besylate
Amlodipine Besylate
28 claims
- Methylprednisolone
Methylprednisolone
27 claims
- Levothyroxine Sodium
Levothyroxine Sodium
25 claims
- Amoxicillin-Clavul…
Amoxicillin-Clavulanate Potass
23 claims
- Atorvastatin Calcium
Atorvastatin Calcium
22 claims
- Lisinopril-Hydroch…
Lisinopril-Hydrochlorothiazide
22 claims
- Fluticasone Propio…
Fluticasone Propionate
18 claims
| Drug | Claims |
|---|---|
| Azithromycin | 33 |
| Amlodipine Besylate | 28 |
| Methylprednisolone | 27 |
| Levothyroxine Sodium | 25 |
| Amoxicillin-Clavulanate Potass Amoxicillin/Potassium Clav | 23 |
| Atorvastatin Calcium | 22 |
| Lisinopril-Hydrochlorothiazide Lisinopril/Hydrochlorothiazide | 22 |
| Fluticasone Propionate | 18 |
| Pravastatin Sodium | 16 |
| Doxycycline Hyclate | 15 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Nurse Practitioner Overview
How HOLLY CLARK, N.P. fits within the Nurse Practitioner landscape nationally.
HOLLY CLARK, N.P.'s 551 claims are below the specialty average of 1,084.
Nearby Nurse Practitioner Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as CLARK.
Compare Nurse Practitioner nationally: see state-by-state distribution →
Healthcare Guides
Learn more about finding, verifying, and understanding healthcare providers.
Explore Illinois
Frequently Asked Questions
What is HOLLY CLARK, N.P.'s specialty? ▼
How much does HOLLY CLARK, N.P. prescribe under Medicare Part D? ▼
Where is HOLLY CLARK, N.P. located? ▼
What is HOLLY CLARK, N.P.'s NPI number? ▼
Does HOLLY CLARK, N.P. prescribe more brand-name or generic drugs? ▼
How many Nurse Practitioner providers are there in the US? ▼
What drugs does HOLLY CLARK, N.P. prescribe most often? ▼
Does HOLLY CLARK, N.P. accept Medicare? ▼
How can I verify HOLLY CLARK, N.P.'s credentials? ▼
Data Sources
- 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