2026 NPPES data Surgical Physician Assistant NPI 1205251816 PA-C
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Cassandra Mueller, PA-C

Surgical Physician Assistant in Washington, District of Columbia.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,179 in Surgical Physician Assistant, 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
92.9/100
▲ 10 pts above national avg 83.1 · Exceptional
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Cassandra Mueller, PA-C reported a CMS MIPS final score of 92.9/100 - above the 83.1 national average.

92.9/100
MIPS score · +10 vs avg

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.

Cassandra Mueller, PA-C's MIPS score vs every scored U.S. clinician

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

93 Top 32% higher than 68% 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%). Below this entry. 90+: 189,403 scored providers (40%). This entry sits in this band. 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

What does the federal data show about Cassandra Mueller, PA-C?

High performer (top quartile)

NPI registry status

Active

Issued 02/19/2014

NPI 1205251816

Primary specialty

Surgical Physician Assistant

Mid-sized

16,179 US NPIs in this specialty

MIPS final score

92.9/100 9.8 pts vs avg

Exceptional band

vs 83.1 national avg

Specialty distribution in District of Columbia

How Surgical Physician Assistant compares to other specialties among District of Columbia providers

District of Columbia providers
Home Health Aide - 20.8%Home Health Aide20.8%Personal Care Attendant - 11.5%Personal Care Attendant11.5%Case Manager/Care Coordinator - 7%Case Manager/Care Coordinator7%Student in an Organized Health Care Education/Training Program - 6.4%Student in an Organized Health Care Education/Training Program6.4%Clinical Social Worker - 4%Clinical Social Worker4%Internal Medicine Physician - 2.1%Internal Medicine Physician2.1%Surgical Physician Assistant - 0.2%Surgical Physician Assistant0.2%
Largest specialties in District of Columbia (% of in-state providers)

Medicare quality performance, MIPS

Cassandra Mueller, PA-C's 2023 MIPS final score plotted against the Surgical Physician Assistant national average

High performer (top quartile)
MIPS Final Score
92.9/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Surgical Physician Assistant) - 92.9/100 vs national avg 83.1

0%100%National avg83%92.9%
MIPS final score (Surgical Physician Assistant) - 92.9/100 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).

Cassandra Mueller, PA-C appears in the CMS NPPES registry as a Surgical Physician Assistant provider holding PA-C credentials at 2401 E ST NW SA-1 SUITE L201, Washington, DC, 20522, with a listed phone of (571) 438-1383. NPI 1205251816 was issued on 02/19/2014.

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 Surgical Physician Assistant providers operate outside Part D entirely. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 92.9/100 for the 2023 performance year (Quality 80.4), compared with the national average of 83.1.

Surgical Physician Assistant is a mid-sized specialty nationwide, with 16,179 enrolled providers across 54 states and an average of 316 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

2401 E ST NW SA-1 SUITE L201
Washington, DC 20522

Provider Details

NPI 1205251816
Specialty Surgical Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 02/19/2014

CMS Quality Score (MIPS)

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

92.9348
Final Score
Avg: 83.1
80.3814
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where Cassandra Mueller, PA-C 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.

Inova Health Care Services
Leesburg, VA

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

Surgical Physician Assistant Overview

How Cassandra Mueller, PA-C fits within the Surgical Physician Assistant landscape nationally.

16,179
Surgical Physician Assistant Providers in US
54
States with Surgical Physician Assistant
316
Avg Claims per Provider

Nearby Surgical Physician Assistant Providers in District of Columbia

Other clinicians with the same primary specialty enrolled in District of Columbia, drawn from the same CMS NPPES roster as Mueller.

Compare Surgical Physician Assistant 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 District of Columbia medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Surgical Physician Assistant 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 Cassandra Mueller, PA-C's specialty?
Cassandra Mueller, PA-C specializes in Surgical Physician Assistant and practices in Washington, District of Columbia. Credentials: PA-C.
What is Cassandra Mueller, PA-C's Medicare quality score?
Cassandra Mueller, PA-C has a CMS MIPS Final Score of 92.9/100 (Quality: 80.4). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Cassandra Mueller, PA-C located?
Cassandra Mueller, PA-C is located at 2401 E ST NW SA-1 SUITE L201, Washington, DC, 20522. Phone: (571) 438-1383.
What is Cassandra Mueller, PA-C's NPI number?
Cassandra Mueller, PA-C's National Provider Identifier (NPI) is 1205251816, issued on 02/19/2014.
How many Surgical Physician Assistant providers are there in the US?
There are 16,179 Surgical Physician Assistant providers across 54 states in the US. The average Surgical Physician Assistant provider writes 316 Medicare Part D claims per year.
Does Cassandra Mueller, PA-C accept Medicare?
Cassandra Mueller, PA-C appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Cassandra Mueller, PA-C's credentials?
Cassandra Mueller, PA-C's NPI is 1205251816 with credentials PA-C. 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.