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2026 NPPES data Emergency Medicine Physician NPI 1598713000 M.D.
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Margrethe Weston, M.D.

Emergency Medicine Physician in Portsmouth, Virginia.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 64,463 in Emergency Medicine Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
92
Medicare Part D claims · 66 beneficiaries · Emergency Medicine Physician avg: 352
MIPS score
93.4/100
▲ 10 pts above national avg 83.5 · Exceptional
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Margrethe Weston, M.D. reported a CMS MIPS final score of 93.4/100 - above the 83.5 national average - and filed 92 Medicare Part D claims in 2023.

93.4/100
MIPS score · +10 vs avg
92
Part D claims, 2023
Likely
board-certified (heuristic)
≥69th
pct among measured MIPS (lower-bound band)

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.

Margrethe Weston, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

93 ≥ 69th percentile 69% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). Below this entry. 80–90: 129,887 measured providers (29%). Below this entry. 90+: 189,403 measured providers (42%). This entry sits in this band. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Margrethe Weston, M.D. sits

This provider among emergency medicine physician peers

Across the 14,017 emergency medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Margrethe Weston, M.D. writes more Part D claims than 32% of them and scores higher on MIPS quality than 62% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 90Margrethe Weston, M.D., Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 62
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one emergency medicine physician peer from a representative sample of 60; the gold marker is Margrethe Weston, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Margrethe Weston, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 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 Margrethe Weston, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 05/05/2006

NPI 1598713000

Primary specialty

Emergency Medicine Physician

High-volume

64,463 US NPIs in this specialty

Medicare Part D claims

92 74% vs specialty avg

2023 prescription claims

Specialty avg: 352

MIPS final score

93.4/100 9.9 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Virginia

How Emergency Medicine Physician compares to other specialties among Virginia providers

Virginia providers
Behavior Technician5.2%Clinical Social Worker5.1%Student in an Organized Heal…4.7%Physical Therapist4.6%Pharmacist4.5%Professional Counselor4%Emergency Medicine Physician1.1%
Largest specialties in Virginia (% of in-state providers)

Medicare quality performance, MIPS

Margrethe Weston, M.D.'s 2023 MIPS final score plotted against the Emergency Medicine Physician national average

High performer (top quartile)
MIPS Final Score
93.4/100
vs 83.5 national avg · 2023 performance year

MIPS final score (Emergency Medicine Physician) - 93.4/100 vs national avg 83.5

0%100%National avg84%93.4%
MIPS final score (Emergency Medicine Physician) - 93.4/100 vs national avg 83.5
How MIPS and board certification work

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).

Margrethe Weston, M.D. appears in the CMS NPPES registry as an Emergency Medicine Physician provider holding M.D. credentials at 620 JOHN PAUL JONES CIR, Portsmouth, VA, 23708, with a listed phone of (757) 953-1407. NPI 1598713000 was issued on 05/05/2006.

Medicare Part D records for calendar year 2023 show 92 prescription claims written by this provider, covering 66 Medicare beneficiaries and totaling roughly $1K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 93.4/100 for the 2023 performance year (Quality 87.1), compared with the 83.5 average among clinicians with a measured score.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,463 enrolled providers across 56 states and an average of 352 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

620 JOHN PAUL JONES CIR
Portsmouth, VA 23708
(757) 953-1407

Provider Details

NPI 1598713000
Specialty Emergency Medicine Physician
Credentials M.D.
Gender Female
NPI Issued 05/05/2006

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

93.3878
Final Score
Measured-score avg: 83.5
87.1131
Quality

Reporting: Group practice

Hospital and facility affiliations

Facilities where Margrethe Weston, 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.

Robert Packer Hospital
★★☆☆☆ 2/5
Sayre, PA
Acute Care Hospitals
CMS CCN: 390079

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

Medicare Part D Prescribing Data

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

92
Total Claims
$1K
Total Drug Cost
66
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
92
Total Day Supply
879
Generic Drug Cost
$1K
Antibiotic Claims
33

Patient Demographics

Average Patient Age
70.2 years
Avg HCC Risk Score
1.38
Gender Split
55% female / 45% male
More Emergency Medicine Physician in VA → All providers in Virginia → Compare specialties →

Emergency Medicine Physician Overview

How Margrethe Weston, M.D. fits within the Emergency Medicine Physician landscape nationally.

64,463
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

Margrethe Weston, M.D.'s 92 claims are below the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Virginia

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

Dr. Michael Abatzis
MD
Mechanicsville, VA
Dr. Gary Abel
MD
Blacksburg, VA
Dr. Kimberly Abel
MD
Roanoke, VA
Jonathan Abraham
Mc Lean, VA
Dr. Nazir Adam
MD
Harrisonburg, VA

Compare Emergency 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 Emergency 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.

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Frequently Asked Questions

What is Margrethe Weston, M.D.'s specialty? ▼
Margrethe Weston, M.D. specializes in Emergency Medicine Physician and practices in Portsmouth, Virginia. Credentials: M.D..
How much does Margrethe Weston, M.D. prescribe under Medicare Part D? ▼
In 2023, Margrethe Weston, M.D. wrote 92 Medicare Part D claims totaling $1K in drug costs for 66 beneficiaries.
What is Margrethe Weston, M.D.'s Medicare quality score? ▼
Margrethe Weston, M.D. has a CMS MIPS Final Score of 93.4/100 (Quality: 87.1). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Margrethe Weston, M.D. located? ▼
Margrethe Weston, M.D. is located at 620 JOHN PAUL JONES CIR, Portsmouth, VA, 23708. Phone: (757) 953-1407.
What is Margrethe Weston, M.D.'s NPI number? ▼
Margrethe Weston, M.D.'s National Provider Identifier (NPI) is 1598713000, issued on 05/05/2006.
How many Emergency Medicine Physician providers are there in the US? ▼
There are 64,463 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
Does Margrethe Weston, M.D. accept Medicare? ▼
Margrethe Weston, M.D. appears in CMS Medicare data with 92 Part D claims and 66 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Margrethe Weston, M.D.'s credentials? ▼
Margrethe Weston, M.D.'s NPI is 1598713000 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

View source datasets and methodology notes
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.
Quality Performance
CMS Merit-based Incentive Payment System (MIPS) - 2023 performance year.
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

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.