2026 NPPES data Pharmacist NPI 1851642474 RPH
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CLARK PARKER, RPH

Pharmacist in CHARLESTON, 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
16
Medicare Part D claims · 12 beneficiaries · Pharmacist avg: 135

What the federal data shows

CLARK PARKER, RPH filed 16 Medicare Part D claims in 2023 as a Pharmacist in CHARLESTON, West Virginia.

16
Part D claims, 2023

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.

CLARK PARKER, RPH's Medicare Part D volume vs every U.S. prescriber

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

16 0th percentile higher than 0% 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

What does the federal data show about CLARK PARKER, RPH?

Quality data not reported

NPI registry status

Active

Issued 09/21/2012

NPI 1851642474

Primary specialty

Pharmacist

High-volume

290,447 US NPIs in this specialty

Medicare Part D claims

16 88% vs specialty avg

2023 prescription claims

Specialty avg: 135

Specialty distribution in West Virginia

How Pharmacist compares to other specialties among West Virginia providers

West Virginia providers

Pharmacist share within West Virginia

1. Pharmacist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pharmacist share within West Virginia

Specialty board-certification context

Estimated specialty board-certified rate — Pharmacist (ABMS / AOA reference)

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

Est. board-certified rate (Pharmacist) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pharmacist) — 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).

CLARK PARKER, RPH appears in the CMS NPPES registry as a Pharmacist provider holding RPH credentials at 6531 MACCORKLE AVE SE, CHARLESTON, WV, 25304, with a listed phone of (304) 925-4721. NPI 1851642474 was issued on 09/21/2012. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PARKER 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 16 prescription claims written by this provider, covering 12 Medicare beneficiaries and totaling roughly $2K in drug spend. 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.

Pharmacist is a high-volume specialty nationwide, with 290,447 enrolled providers across 56 states and an average of 135 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

6531 MACCORKLE AVE SE
CHARLESTON, WV 25304

Provider Details

NPI 1851642474
Specialty Pharmacist
Credentials RPH
Gender Male
NPI Issued 09/21/2012

Medicare Part D Prescribing Data

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

16
Total Claims
$2K
Total Drug Cost
12
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
16
Total Day Supply
58
Generic Drug Cost
$1K

Patient Demographics

Average Patient Age
56.2 years
Avg HCC Risk Score
2.59

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Naloxone Hcl
14

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

Pharmacist Overview

How CLARK PARKER, RPH fits within the Pharmacist landscape nationally.

290,447
Pharmacist Providers in US
56
States with Pharmacist
135
Avg Claims per Provider

CLARK PARKER, RPH's 16 claims are below the specialty average of 135.

Nearby Pharmacist Providers in West Virginia

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

Compare Pharmacist nationally: see state-by-state distribution →

Frequently Asked Questions

What is CLARK PARKER, RPH's specialty?
CLARK PARKER, RPH specializes in Pharmacist and practices in CHARLESTON, West Virginia. Credentials: RPH.
How much does CLARK PARKER, RPH prescribe under Medicare Part D?
In 2023, CLARK PARKER, RPH wrote 16 Medicare Part D claims totaling $2K in drug costs for 12 beneficiaries.
Where is CLARK PARKER, RPH located?
CLARK PARKER, RPH is located at 6531 MACCORKLE AVE SE, CHARLESTON, WV, 25304. Phone: (304) 925-4721.
What is CLARK PARKER, RPH's NPI number?
CLARK PARKER, RPH's National Provider Identifier (NPI) is 1851642474, issued on 09/21/2012.
How many Pharmacist providers are there in the US?
There are 290,447 Pharmacist providers across 56 states in the US. The average Pharmacist provider writes 135 Medicare Part D claims per year.
What drugs does CLARK PARKER, RPH prescribe most often?
Based on 2023 Medicare Part D data, CLARK PARKER, RPH's most frequently prescribed drugs include Naloxone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CLARK PARKER, RPH accept Medicare?
CLARK PARKER, RPH appears in CMS Medicare data with 16 Part D claims and 12 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CLARK PARKER, RPH's credentials?
CLARK PARKER, RPH's NPI is 1851642474 with credentials RPH. 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