2026 NPPES data Internal Medicine Physician NPI 1578533873 M.D.
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Arthur Pemberton, M.D.

Internal Medicine Physician in Galax, 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
14K
Medicare Part D claims · 1K beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
88%
generic claims · 12% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

Arthur Pemberton, M.D. filed 14,188 Medicare Part D claims in 2023 as a Internal Medicine Physician in Galax, Virginia, prescribing 88% generic.

14K
Part D claims, 2023
88%
generic prescribing
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.

Arthur Pemberton, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

14,188 Top 2% higher than 98% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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 certification likely (heuristic — not verified)

Arthur Pemberton, 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).

What does the federal data show about Arthur Pemberton, M.D.?

Quality data not reported

NPI registry status

Active

Issued 01/26/2006

NPI 1578533873

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

14,188 vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Virginia

How Internal Medicine Physician compares to other specialties among Virginia providers

Virginia providers

Internal Medicine Physician share within Virginia

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

Specialty board-certification context

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

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

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

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

Arthur Pemberton, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 544 E STUART DR STE D, Galax, VA, 24333, with a listed phone of (273) 236-5181. NPI 1578533873 was issued on 01/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Pemberton 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 14,188 prescription claims written by this provider, covering 1,047 Medicare beneficiaries and totaling roughly $1.6 million in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 2.1%. 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

544 E STUART DR STE D
Galax, VA 24333

Provider Details

NPI 1578533873
Specialty Internal Medicine Physician
Credentials M.D.
Gender Male
NPI Issued 01/26/2006

Hospital and facility affiliations

Facilities where Arthur Pemberton, 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.

Carilion Giles Community Hospital
★★★★☆ 4/5
Galax, VA
Critical Access Hospitals
CMS CCN: 491302

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Typical

Arthur Pemberton, M.D. — brand share 12.0%
Specialty average (est.)

12% brand-name claims vs 88% generic, on 14,188 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.

14,188
Total Claims
$1.6M
Total Drug Cost
1,047
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
31,572
Total Day Supply
923,021
Brand vs Generic
12% brand / 88% generic
Brand Drug Cost
$1.4M
Generic Drug Cost
$246K
Opioid Claims
298 (2.1% rate)
Antibiotic Claims
222

Patient Demographics

Average Patient Age
72.1 years
Avg HCC Risk Score
1.26
Gender Split
56% female / 44% male
Age Distribution
<65: 162, 65-74: 457, 75-84: 321, 85+: 107

Top Prescribed Drugs (Medicare Part D)

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

What Arthur Pemberton, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Omeprazole
479
Levothyroxine Sodium
430
Losartan Potassium
413
Lisinopril
411
Atorvastatin Calcium
409
Amlodipine Besylate
391
Gabapentin
366
Rosuvastatin Calcium
287
Pantoprazole Sodium
279
Metoprolol Tartrate
251

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

Internal Medicine Physician Overview

How Arthur Pemberton, M.D. fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

Arthur Pemberton, M.D.'s 14,188 claims are above the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Virginia

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

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry — providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the Virginia medical board — federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Internal Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only — they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Arthur Pemberton, M.D.'s specialty?
Arthur Pemberton, M.D. specializes in Internal Medicine Physician and practices in Galax, Virginia. Credentials: M.D..
How much does Arthur Pemberton, M.D. prescribe under Medicare Part D?
In 2023, Arthur Pemberton, M.D. wrote 14,188 Medicare Part D claims totaling $1.6M in drug costs for 1,047 beneficiaries.
Where is Arthur Pemberton, M.D. located?
Arthur Pemberton, M.D. is located at 544 E STUART DR STE D, Galax, VA, 24333. Phone: (273) 236-5181.
What is Arthur Pemberton, M.D.'s NPI number?
Arthur Pemberton, M.D.'s National Provider Identifier (NPI) is 1578533873, issued on 01/26/2006.
Does Arthur Pemberton, M.D. prescribe more brand-name or generic drugs?
Arthur Pemberton, M.D.'s prescribing is 12% brand-name and 88% generic drugs by claim count, with $1.4M in brand drug costs.
Does Arthur Pemberton, M.D. prescribe opioids?
Yes, Arthur Pemberton, M.D. had 298 opioid claims in 2023 with an opioid prescribing rate of 2.1%.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does Arthur Pemberton, M.D. prescribe most often?
Based on 2023 Medicare Part D data, Arthur Pemberton, M.D.'s most frequently prescribed drugs include Omeprazole, Levothyroxine Sodium, Losartan Potassium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Arthur Pemberton, M.D. accept Medicare?
Arthur Pemberton, M.D. appears in CMS Medicare data with 14,188 Part D claims and 1,047 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Arthur Pemberton, M.D.'s credentials?
Arthur Pemberton, M.D.'s NPI is 1578533873 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