2026 NPPES data Family Medicine Physician NPI 1003838830 DO
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MARILYN HORACEK, DO

Family Medicine Physician in WHEELING, West Virginia. 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
152
Medicare Part D claims · 57 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MARILYN HORACEK, DO filed 152 Medicare Part D claims in 2023 as a Family Medicine Physician in WHEELING, West Virginia, prescribing 86% generic.

152
Part D claims, 2023
86%
generic prescribing

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.

MARILYN HORACEK, DO's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

152 35th percentile higher than 35% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). This entry sits in this band. 200–400: 182,923 prescribers (13%). Above this entry. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

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

Board-eligible specialty (heuristic — not verified)

MARILYN HORACEK, DO practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about MARILYN HORACEK, DO?

Quality data not reported

NPI registry status

Active

Issued 07/24/2006

NPI 1003838830

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

152 96% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

Specialty distribution in West Virginia

How Family Medicine Physician compares to other specialties among West Virginia providers

West Virginia providers

Family Medicine Physician share within West Virginia

1. Family Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Family Medicine Physician share within West Virginia

Specialty board-certification context

Estimated specialty board-certified rate — Family Medicine Physician (ABMS / AOA reference)

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

Est. board-certified rate (Family Medicine Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Family Medicine 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).

MARILYN HORACEK, DO appears in the CMS NPPES registry as a Family Medicine Physician provider holding DO credentials at 2115 CHAPLINE ST, WHEELING, WV, 26003, with a listed phone of (304) 217-3130. NPI 1003838830 was issued on 07/24/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HORACEK 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 152 prescription claims written by this provider, covering 57 Medicare beneficiaries and totaling roughly $19K in drug spend, split 14% brand-name and 86% 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.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

2115 CHAPLINE ST
WHEELING, WV 26003

Provider Details

NPI 1003838830
Specialty Family Medicine Physician
Credentials DO
Gender Female
NPI Issued 07/24/2006

Brand vs generic prescribing mix · Typical

MARILYN HORACEK, DO — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 152 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.

152
Total Claims
$19K
Total Drug Cost
57
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
369
Total Day Supply
11,038
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$16K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
68.3 years
Avg HCC Risk Score
1.60
Gender Split
56% female / 44% male
Age Distribution
<65: 19, 65-74: 25, 75-84: N/A, 85+: N/A

Family Medicine Physician Overview

How MARILYN HORACEK, DO fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

MARILYN HORACEK, DO's 152 claims are below the specialty average of 3,418.

Nearby Family Medicine Physician Providers in West Virginia

Other clinicians with the same primary specialty enrolled in West Virginia, drawn from the same CMS NPPES roster as HORACEK.

Compare Family Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MARILYN HORACEK, DO's specialty?
MARILYN HORACEK, DO specializes in Family Medicine Physician and practices in WHEELING, West Virginia. Credentials: DO.
How much does MARILYN HORACEK, DO prescribe under Medicare Part D?
In 2023, MARILYN HORACEK, DO wrote 152 Medicare Part D claims totaling $19K in drug costs for 57 beneficiaries.
Where is MARILYN HORACEK, DO located?
MARILYN HORACEK, DO is located at 2115 CHAPLINE ST, WHEELING, WV, 26003. Phone: (304) 217-3130.
What is MARILYN HORACEK, DO's NPI number?
MARILYN HORACEK, DO's National Provider Identifier (NPI) is 1003838830, issued on 07/24/2006.
Does MARILYN HORACEK, DO prescribe more brand-name or generic drugs?
MARILYN HORACEK, DO's prescribing is 14% brand-name and 86% generic drugs by claim count, with $16K in brand drug costs.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
Does MARILYN HORACEK, DO accept Medicare?
MARILYN HORACEK, DO appears in CMS Medicare data with 152 Part D claims and 57 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MARILYN HORACEK, DO's credentials?
MARILYN HORACEK, DO's NPI is 1003838830 with credentials DO. 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