2026 NPPES data General Practice Physician NPI 1871855650 M.D.
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DEL SLONEKER, M.D.

General Practice Physician in LITTLE ROCK, Arkansas. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
359
Medicare Part D claims · 157 beneficiaries · General Practice Physician avg: 3K
Industry payments
$125.89
6 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: DEL SLONEKER, M.D. is a General Practice Physician ([object Object]) practicing in LITTLE ROCK, Arkansas with a Medicare Part D prescribing footprint of 359 claims across 157 beneficiaries . Industry payments of $125.89 across 6 transactions are disclosed under CMS Open Payments (Sunshine Act).

What the federal data shows

DEL SLONEKER, M.D. filed 359 Medicare Part D claims in 2023 as a General Practice Physician in LITTLE ROCK, Arkansas.

359
Part D claims, 2023
Likely
board-certified (heuristic)

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.

Board certification likely (heuristic — not verified)

DEL SLONEKER, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

DEL SLONEKER, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 06/08/2012

NPI 1871855650

Primary specialty

General Practice Physician

Mid-sized

16,677 US NPIs in this specialty

Medicare Part D claims

359 87% vs specialty avg

2023 prescription claims

Specialty avg: 2,872

Specialty distribution in Arkansas

How General Practice Physician compares to other specialties among Arkansas providers

Arkansas providers

General Practice Physician share within Arkansas

1. General Practice Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
General Practice Physician share within Arkansas

Specialty board-certification context

Estimated specialty board-certified rate — General Practice Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
General Practice Physician ABMS/AOA estimate

Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (General Practice Physician) — ABMS / AOA estimate

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).

DEL SLONEKER, M.D. is a General Practice Physician provider practicing in LITTLE ROCK, Arkansas, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1871855650. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

DEL SLONEKER, M.D. appears in the CMS NPPES registry as a General Practice Physician provider holding M.D. credentials at 4018 W CAPITOL AVE, LITTLE ROCK, AR, 72205, with a listed phone of (501) 686-8224. NPI 1871855650 was issued on 06/08/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what SLONEKER 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 359 prescription claims written by this provider, covering 157 Medicare beneficiaries and totaling roughly $6K in drug spend, with an opioid prescribing rate of 23.4%. 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.

General Practice Physician is a mid-sized specialty nationwide, with 16,677 enrolled providers across 56 states and an average of 2,872 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

4018 W CAPITOL AVE
LITTLE ROCK, AR 72205

Provider Details

NPI 1871855650
Specialty General Practice Physician
Credentials M.D.
Gender Male
NPI Issued 06/08/2012

Hospital and facility affiliations

Facilities where DEL SLONEKER, M.D. 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.

MANNING,JOHNSON AND SPENCER, PA
SPRINGDALE, AR

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 DEL SLONEKER, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$126

Largest payer

Regeneron Healthcare Solutions, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

359
Total Claims
$6K
Total Drug Cost
157
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
415
Total Day Supply
7,294
Generic Drug Cost
$6K
Opioid Claims
84 (23.4% rate)
Antibiotic Claims
69

Patient Demographics

Average Patient Age
72.2 years
Avg HCC Risk Score
1.34
Gender Split
55% female / 45% male
Age Distribution
<65: 22, 65-74: 67, 75-84: 57, 85+: 11

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Oxycodone Hcl
82
Cephalexin
36
Azelastine Hcl
35
Fluticasone Propionate
27
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
25
Omeprazole
24
Famotidine
15
Ipratropium Bromide
11
Prednisone
11

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

General Practice Physician Overview

How DEL SLONEKER, M.D. fits within the General Practice Physician landscape nationally.

16,677
General Practice Physician Providers in US
56
States with General Practice Physician
2,872
Avg Claims per Provider

DEL SLONEKER, M.D.'s 359 claims are below the specialty average of 2,872.

Nearby General Practice Physician Providers in Arkansas

Other clinicians with the same primary specialty enrolled in Arkansas, drawn from the same CMS NPPES roster as SLONEKER.

Compare General Practice Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is DEL SLONEKER, M.D.'s specialty?
DEL SLONEKER, M.D. specializes in General Practice Physician and practices in LITTLE ROCK, Arkansas. Credentials: M.D..
How much does DEL SLONEKER, M.D. prescribe under Medicare Part D?
In 2023, DEL SLONEKER, M.D. wrote 359 Medicare Part D claims totaling $6K in drug costs for 157 beneficiaries.
Where is DEL SLONEKER, M.D. located?
DEL SLONEKER, M.D. is located at 4018 W CAPITOL AVE, LITTLE ROCK, AR, 72205. Phone: (501) 686-8224.
What is DEL SLONEKER, M.D.'s NPI number?
DEL SLONEKER, M.D.'s National Provider Identifier (NPI) is 1871855650, issued on 06/08/2012.
Does DEL SLONEKER, M.D. prescribe opioids?
Yes, DEL SLONEKER, M.D. had 84 opioid claims in 2023 with an opioid prescribing rate of 23.4%.
How many General Practice Physician providers are there in the US?
There are 16,677 General Practice Physician providers across 56 states in the US. The average General Practice Physician provider writes 2,872 Medicare Part D claims per year.
What drugs does DEL SLONEKER, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DEL SLONEKER, M.D.'s most frequently prescribed drugs include Oxycodone Hcl, Cephalexin, Azelastine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DEL SLONEKER, M.D. accept Medicare?
DEL SLONEKER, M.D. appears in CMS Medicare data with 359 Part D claims and 157 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DEL SLONEKER, M.D.'s credentials?
DEL SLONEKER, M.D.'s NPI is 1871855650 with credentials M.D.. 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

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