2026 NPPES data Medical Physician Assistant NPI 1831230911 PA-C
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NANCY CLARK, PA-C

Medical Physician Assistant in BELLEVUE, Washington. 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
418
Medicare Part D claims · 291 beneficiaries · Medical Physician Assistant avg: 1K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
71.7681/100
▼ 11 pts below national avg 83.1 · [object Object]

What the federal data shows

NANCY CLARK, PA-C reported a CMS MIPS final score of 71.7681/100 — below the 83.1 national average — and filed 418 Medicare Part D claims in 2023.

71.7681/100
MIPS score · -11 vs avg
418
Part D claims, 2023
94%
generic prescribing

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.

NANCY CLARK, 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

72 9th percentile higher than 9% 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

What does the federal data show about NANCY CLARK, PA-C?

Below national average

NPI registry status

Active

Issued 02/09/2007

NPI 1831230911

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

418 61% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

MIPS final score

71.7681/100 11.33189999999999% pts

Mid-tier band

vs 83.1 national avg

Specialty distribution in Washington

How Medical Physician Assistant compares to other specialties among Washington providers

Washington providers

Medical Physician Assistant share within Washington

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

Medicare quality performance — MIPS

NANCY CLARK, PA-C's 2023 MIPS final score plotted against the Medical Physician Assistant national average

Below national average
MIPS Final Score
71.7681/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Medical Physician Assistant) — 71.7681/100 vs national avg 83.1

0%100%National avg83%71.8%
MIPS final score (Medical Physician Assistant) — 71.7681/100 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).

NANCY CLARK, PA-C is a Medical Physician Assistant provider practicing in BELLEVUE, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: PA-C. NPI: 1831230911. 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.

NANCY CLARK, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 13033 BELLEVUE REDMOND RD, BELLEVUE, WA, 98005, with a listed phone of (425) 468-6500. NPI 1831230911 was issued on 02/09/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CLARK 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 418 prescription claims written by this provider, covering 291 Medicare beneficiaries and totaling roughly $12K in drug spend, split 6% brand-name and 94% generic by claim count. 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 71.7681/100 for the 2023 performance year (Quality 76.6057, Cost 35.9547), compared with the national average of 83.1.

Medical Physician Assistant is a mid-sized specialty nationwide, with 40,527 enrolled providers across 55 states and an average of 1,077 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

13033 BELLEVUE REDMOND RD
BELLEVUE, WA 98005

Provider Details

NPI 1831230911
Specialty Medical Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 02/09/2007

CMS Quality Score (MIPS)

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

71.7681
Final Score
Avg: 83.1
76.6057
Quality
35.9547
Cost
92
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where NANCY CLARK, 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.

WHIDBEY ISLAND PUBLIC HOSPITAL DISTRICT
CLINTON, WA

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

License & disciplinary context — Washington WMC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~34K Washington medical licensees in 2023 — they are NOT specific to NANCY CLARK, PA-C. To verify NANCY CLARK, PA-C's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

NANCY CLARK, PA-C — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 418 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

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

418
Total Claims
$12K
Total Drug Cost
291
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
505
Total Day Supply
8,269
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$6K
Generic Drug Cost
$6K
Antibiotic Claims
138

Patient Demographics

Average Patient Age
73.3 years
Avg HCC Risk Score
0.91
Gender Split
65% female / 35% male
Age Distribution
<65: 13, 65-74: 155, 75-84: 102, 85+: 21

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Amoxicillin-Clavulanate Potass
Amoxicillin/Potassium Clav
32
Prednisone
31
Valacyclovir
Valacyclovir Hcl
24
Ciprofloxacin Hcl
23
Sulfamethoxazole-Trimethoprim
Sulfamethoxazole/Trimethoprim
17
Cephalexin
16
Doxycycline Monohydrate
15
Albuterol Sulfate Hfa
Albuterol Sulfate
14
Gabapentin
14
Azithromycin
13

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

Medical Physician Assistant Overview

How NANCY CLARK, PA-C fits within the Medical Physician Assistant landscape nationally.

40,527
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider

NANCY CLARK, PA-C's 418 claims are below the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Washington

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

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

Frequently Asked Questions

What is NANCY CLARK, PA-C's specialty?
NANCY CLARK, PA-C specializes in Medical Physician Assistant and practices in BELLEVUE, Washington. Credentials: PA-C.
How much does NANCY CLARK, PA-C prescribe under Medicare Part D?
In 2023, NANCY CLARK, PA-C wrote 418 Medicare Part D claims totaling $12K in drug costs for 291 beneficiaries.
What is NANCY CLARK, PA-C's Medicare quality score?
NANCY CLARK, PA-C has a CMS MIPS Final Score of 71.7681/100 (Quality: 76.6057, Cost: 35.9547). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is NANCY CLARK, PA-C located?
NANCY CLARK, PA-C is located at 13033 BELLEVUE REDMOND RD, BELLEVUE, WA, 98005. Phone: (425) 468-6500.
What is NANCY CLARK, PA-C's NPI number?
NANCY CLARK, PA-C's National Provider Identifier (NPI) is 1831230911, issued on 02/09/2007.
Does NANCY CLARK, PA-C prescribe more brand-name or generic drugs?
NANCY CLARK, PA-C's prescribing is 6% brand-name and 94% generic drugs by claim count, with $6K in brand drug costs.
How many Medical Physician Assistant providers are there in the US?
There are 40,527 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does NANCY CLARK, PA-C prescribe most often?
Based on 2023 Medicare Part D data, NANCY CLARK, PA-C's most frequently prescribed drugs include Amoxicillin-Clavulanate Potass, Prednisone, Valacyclovir. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does NANCY CLARK, PA-C accept Medicare?
NANCY CLARK, PA-C appears in CMS Medicare data with 418 Part D claims and 291 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify NANCY CLARK, PA-C's credentials?
NANCY CLARK, PA-C's NPI is 1831230911 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

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