2026 NPPES data Clinical Pathology Physician NPI 1740259548 M.D.
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Moira Larsen, M.D.

Clinical Pathology Physician in Baltimore, Maryland.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 404 in Clinical Pathology 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.
MIPS score
80.2/100
▼ 3 pts below national avg 83.1 · Above neutral
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Moira Larsen, M.D. reported a CMS MIPS final score of 80.2/100 - below the 83.1 national average.

80.2/100
MIPS score · -3 vs avg
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.

Moira Larsen, M.D.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure

80 33rd percentile higher than 33% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). This entry sits in this band. 90+: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored 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.

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

Board certification likely (heuristic, not verified)

Moira Larsen, 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 Moira Larsen, M.D.?

Near national average

NPI registry status

Active

Issued 03/15/2006

NPI 1740259548

Primary specialty

Clinical Pathology Physician

Rare

404 US NPIs in this specialty

MIPS final score

80.2/100 2.9 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in Maryland

How Clinical Pathology Physician compares to other specialties among Maryland providers

Maryland providers
Behavior Technician - 14.1%Behavior Technician14.1%Clinical Social Worker - 5.5%Clinical Social Worker5.5%Student in an Organized Health Care Education/Training Program - 4.5%Student in an Organized Health Care Education/Training Program4.5%Home Health Aide - 4.4%Home Health Aide4.4%Physical Therapist - 3.9%Physical Therapist3.9%Pharmacist - 3.6%Pharmacist3.6%Clinical Pathology Physician - 0%Clinical Pathology Physician0%
Largest specialties in Maryland (% of in-state providers)

Medicare quality performance, MIPS

Moira Larsen, M.D.'s 2023 MIPS final score plotted against the Clinical Pathology Physician national average

Near national average
MIPS Final Score
80.2/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Clinical Pathology Physician) - 80.2/100 vs national avg 83.1

0%100%National avg83%80.2%
MIPS final score (Clinical Pathology Physician) - 80.2/100 vs national avg 83.1
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).

Moira Larsen, M.D. appears in the CMS NPPES registry as a Clinical Pathology Physician provider holding M.D. credentials at 5601 LOCH RAVEN BLVD, Baltimore, MD, 21239, with a listed phone of (410) 532-8000. NPI 1740259548 was issued on 03/15/2006.

Medicare Part D prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal, many Clinical Pathology Physician providers operate outside Part D entirely. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 80.2/100 for the 2023 performance year (Quality 76.7, Cost 53.5), compared with the national average of 83.1.

Clinical Pathology Physician is a narrow specialty nationwide, with 404 enrolled providers across 48 states and an average of 194 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

5601 LOCH RAVEN BLVD
Baltimore, MD 21239

Provider Details

NPI 1740259548
Specialty Clinical Pathology Physician
Credentials M.D.
Gender Female
NPI Issued 03/15/2006

CMS Quality Score (MIPS)

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

80.1797
Final Score
Avg: 83.1
76.6904
Quality
53.4937
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Moira Larsen, 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.

Medstar Medical Group II LLC
Leonardtown, MD

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

Clinical Pathology Physician Overview

How Moira Larsen, M.D. fits within the Clinical Pathology Physician landscape nationally.

404
Clinical Pathology Physician Providers in US
48
States with Clinical Pathology Physician
194
Avg Claims per Provider

Nearby Clinical Pathology Physician Providers in Maryland

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

Compare Clinical Pathology 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 Maryland medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Clinical Pathology 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 Moira Larsen, M.D.'s specialty?
Moira Larsen, M.D. specializes in Clinical Pathology Physician and practices in Baltimore, Maryland. Credentials: M.D..
What is Moira Larsen, M.D.'s Medicare quality score?
Moira Larsen, M.D. has a CMS MIPS Final Score of 80.2/100 (Quality: 76.7, Cost: 53.5). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Moira Larsen, M.D. located?
Moira Larsen, M.D. is located at 5601 LOCH RAVEN BLVD, Baltimore, MD, 21239. Phone: (410) 532-8000.
What is Moira Larsen, M.D.'s NPI number?
Moira Larsen, M.D.'s National Provider Identifier (NPI) is 1740259548, issued on 03/15/2006.
How many Clinical Pathology Physician providers are there in the US?
There are 404 Clinical Pathology Physician providers across 48 states in the US. The average Clinical Pathology Physician provider writes 194 Medicare Part D claims per year.
Does Moira Larsen, M.D. accept Medicare?
Moira Larsen, M.D. appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Moira Larsen, M.D.'s credentials?
Moira Larsen, M.D.'s NPI is 1740259548 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.
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 PlainDoctor editorial team.

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.