2026 NPPES data Physician Assistant NPI 1558690263 MPAS PA
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GREGORY DUTTON, MPAS PA

Physician Assistant in ANDERSON, South Carolina. 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
93
Medicare Part D claims · 67 beneficiaries · Physician Assistant avg: 790
Industry payments
$17.85
1 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

GREGORY DUTTON, MPAS PA filed 93 Medicare Part D claims in 2023 as a Physician Assistant in ANDERSON, South Carolina.

93
Part D claims, 2023
$17.85
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.

GREGORY DUTTON, MPAS PA's Medicare Part D volume vs every U.S. prescriber

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

93 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 GREGORY DUTTON, MPAS PA?

Quality data not reported

NPI registry status

Active

Issued 12/09/2009

NPI 1558690263

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

93 88% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in South Carolina

How Physician Assistant compares to other specialties among South Carolina providers

South Carolina providers

Physician Assistant share within South Carolina

1. Physician Assistant42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Physician Assistant share within South Carolina

Specialty board-certification context

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

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

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

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

GREGORY DUTTON, MPAS PA appears in the CMS NPPES registry as a Physician Assistant provider holding MPAS PA credentials at 800 N FANT ST, ANDERSON, SC, 29621, with a listed phone of (864) 512-1000. NPI 1558690263 was issued on 12/09/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what DUTTON 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 93 prescription claims written by this provider, covering 67 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

800 N FANT ST
ANDERSON, SC 29621

Provider Details

NPI 1558690263
Specialty Physician Assistant
Credentials MPAS PA
Gender Male
NPI Issued 12/09/2009

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 GREGORY DUTTON, MPAS PA. Source: openpaymentsdata.cms.gov.

Total received

$18

Largest payer

Janssen Pharmaceuticals, 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.

93
Total Claims
$2K
Total Drug Cost
67
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
93
Total Day Supply
1,457
Generic Drug Cost
$1K
Antibiotic Claims
29

Patient Demographics

Average Patient Age
66.5 years
Avg HCC Risk Score
1.60
Gender Split
60% female / 40% male
Age Distribution
<65: 27, 65-74: 23, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Meloxicam
16

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

Physician Assistant Overview

How GREGORY DUTTON, MPAS PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

GREGORY DUTTON, MPAS PA's 93 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as DUTTON.

Compare Physician Assistant nationally: see state-by-state distribution →

Frequently Asked Questions

What is GREGORY DUTTON, MPAS PA's specialty?
GREGORY DUTTON, MPAS PA specializes in Physician Assistant and practices in ANDERSON, South Carolina. Credentials: MPAS PA.
How much does GREGORY DUTTON, MPAS PA prescribe under Medicare Part D?
In 2023, GREGORY DUTTON, MPAS PA wrote 93 Medicare Part D claims totaling $2K in drug costs for 67 beneficiaries.
Where is GREGORY DUTTON, MPAS PA located?
GREGORY DUTTON, MPAS PA is located at 800 N FANT ST, ANDERSON, SC, 29621. Phone: (864) 512-1000.
What is GREGORY DUTTON, MPAS PA's NPI number?
GREGORY DUTTON, MPAS PA's National Provider Identifier (NPI) is 1558690263, issued on 12/09/2009.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does GREGORY DUTTON, MPAS PA prescribe most often?
Based on 2023 Medicare Part D data, GREGORY DUTTON, MPAS PA's most frequently prescribed drugs include Meloxicam. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GREGORY DUTTON, MPAS PA accept Medicare?
GREGORY DUTTON, MPAS PA appears in CMS Medicare data with 93 Part D claims and 67 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GREGORY DUTTON, MPAS PA's credentials?
GREGORY DUTTON, MPAS PA's NPI is 1558690263 with credentials MPAS PA. 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