2026 NPPES data Specialist NPI 1659364420 MD
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SARAH MUSCAT, MD

Specialist in PORTLAND, Maine. 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
30
Medicare Part D claims · 20 beneficiaries · Specialist avg: 1K
MIPS score
75.5277/100
▼ 8 pts below national avg 83.1 · [object Object]
What the federal data reveals: SARAH MUSCAT, MD is a Specialist ([object Object]) practicing in PORTLAND, Maine with a Medicare Part D prescribing footprint of 30 claims across 20 beneficiaries . Their CMS MIPS Final Score of 75.5277/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What the federal data shows

SARAH MUSCAT, MD reported a CMS MIPS final score of 75.5277/100 — below the 83.1 national average — and filed 30 Medicare Part D claims in 2023.

75.5277/100
MIPS score · -8 vs avg
30
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.

SARAH MUSCAT, MD's MIPS score vs every scored U.S. clinician

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

76 15th percentile higher than 15% 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%). This entry sits in this band. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 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

SARAH MUSCAT, MD at a glance

Below national average

NPI registry status

Active

Issued 08/26/2005

NPI 1659364420

Primary specialty

Specialist

High-volume

69,658 US NPIs in this specialty

Medicare Part D claims

30 98% vs specialty avg

2023 prescription claims

Specialty avg: 1,474

MIPS final score

75.5277/100 7.5722999999999985% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in Maine

How Specialist compares to other specialties among Maine providers

Maine providers

Specialist share within Maine

1. Specialist42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Specialist share within Maine

Medicare quality performance — MIPS

SARAH MUSCAT, MD's 2023 MIPS final score plotted against the Specialist national average

Below national average
MIPS Final Score
75.5277/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Specialist) — 75.5277/100 vs national avg 83.1

0%100%National avg83%75.5%
MIPS final score (Specialist) — 75.5277/100 vs national avg 83.1

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).

SARAH MUSCAT, MD is a Specialist provider practicing in PORTLAND, Maine, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1659364420. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

SARAH MUSCAT, MD appears in the CMS NPPES registry as a Specialist provider holding MD credentials at 144 STATE ST, PORTLAND, ME, 04101, with a listed phone of (207) 535-1800. NPI 1659364420 was issued on 08/26/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MUSCAT 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 30 prescription claims written by this provider, covering 20 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 75.5277/100 for the 2023 performance year (Quality 64.1481, Cost 37.611), compared with the national average of 83.1.

Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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

144 STATE ST
PORTLAND, ME 04101

Provider Details

NPI 1659364420
Specialty Specialist
Credentials MD
Gender Female
NPI Issued 08/26/2005

CMS Quality Score (MIPS)

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

75.5277
Final Score
Avg: 83.1
64.1481
Quality
37.611
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where SARAH MUSCAT, MD 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.

THE MCLEAN HOSPITAL CORPORATION
BELMONT, MA

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.

30
Total Claims
$2K
Total Drug Cost
20
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
68
Total Day Supply
1,996
Brand Drug Cost
$0
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
74.6 years
Avg HCC Risk Score
1.34

Specialist Overview

How SARAH MUSCAT, MD fits within the Specialist landscape nationally.

69,658
Specialist Providers in US
55
States with Specialist
1,474
Avg Claims per Provider

SARAH MUSCAT, MD's 30 claims are below the specialty average of 1,474.

Nearby Specialist Providers in Maine

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

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

Frequently Asked Questions

What is SARAH MUSCAT, MD's specialty?
SARAH MUSCAT, MD specializes in Specialist and practices in PORTLAND, Maine. Credentials: MD.
How much does SARAH MUSCAT, MD prescribe under Medicare Part D?
In 2023, SARAH MUSCAT, MD wrote 30 Medicare Part D claims totaling $2K in drug costs for 20 beneficiaries.
What is SARAH MUSCAT, MD's Medicare quality score?
SARAH MUSCAT, MD has a CMS MIPS Final Score of 75.5277/100 (Quality: 64.1481, Cost: 37.611). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is SARAH MUSCAT, MD located?
SARAH MUSCAT, MD is located at 144 STATE ST, PORTLAND, ME, 04101. Phone: (207) 535-1800.
What is SARAH MUSCAT, MD's NPI number?
SARAH MUSCAT, MD's National Provider Identifier (NPI) is 1659364420, issued on 08/26/2005.
How many Specialist providers are there in the US?
There are 69,658 Specialist providers across 55 states in the US. The average Specialist provider writes 1,474 Medicare Part D claims per year.
Does SARAH MUSCAT, MD accept Medicare?
SARAH MUSCAT, MD appears in CMS Medicare data with 30 Part D claims and 20 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SARAH MUSCAT, MD's credentials?
SARAH MUSCAT, MD's NPI is 1659364420 with credentials MD. 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.
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