PlainDoctor

2026 NPPES data Surgical Physician Assistant NPI 1285229500 PA-C
Verify on CMS →

Nathan Ambrose, PA-C

Surgical Physician Assistant in Vancouver, Washington.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,380 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.
Prescribing volume
223
Medicare Part D claims · 124 beneficiaries · Surgical Physician Assistant avg: 341
MIPS score
100/100
▲ 17 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

Nathan Ambrose, PA-C reported a CMS MIPS final score of 100/100 - above the 83.5 national average - and filed 223 Medicare Part D claims in 2024.

100/100
MIPS score · +17 vs avg
223
Part D claims, 2024
≥92nd
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.

Federal trust snapshot

What official records show about Nathan Ambrose, PA-C

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1285229500), first enumerated 03/08/2021.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 223 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 100/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • State context

    State board disciplinary context

    Washington statewide board action statistics are published annually — these figures describe aggregate state activity, not Nathan Ambrose, PA-C's individual license status. Verify directly with the state medical board.

    Source: WMC annual report 2023

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1285229500 · Surgical Physician Assistant

NPI-10 · ENUM-RECENT · TAX-MID · MIPS-ELITE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1285229500
  • ENUM-RECENT 2021
  • TAX-MID 16K Surgical Physician
  • MIPS-ELITE 100/100
  • RX-LIGHT 223
  • BOOK-THIN 473 in Washington
  • PHOTO-FINISH James Aicardi · ±0.0

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Nathan Ambrose, PA-C'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.

100 ≥ 92nd percentile 92% 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 Nathan Ambrose, PA-C sits

This provider among surgical physician assistant peers

Across the 3,657 surgical physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Nathan Ambrose, PA-C writes more Part D claims than 64% of them and scores higher on MIPS quality than 95% - placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

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: 100 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 38Nathan Ambrose, PA-C, Part D claim volume, percentile in specialty: 64 · MIPS quality, percentile: 95
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one surgical physician assistant peer from a representative sample of 60; the gold marker is Nathan Ambrose, PA-C. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Nathan Ambrose, PA-C?

High performer (top quartile)

NPI registry status

Active

Issued 03/08/2021

NPI 1285229500

Primary specialty

Surgical Physician Assistant

Mid-sized

16,380 US NPIs in this specialty

Medicare Part D claims

223 35% vs specialty avg

2024 prescription claims

Specialty avg: 341

MIPS final score

100/100 16.5 pts vs avg

Exceptional band

vs 83.5 national avg

Specialty distribution in Washington

How Surgical Physician Assistant compares to other specialties among Washington providers

Washington providers
Mental Health Counselor8.5%Massage Therapist6.4%Counselor5.7%Behavior Technician4.7%Pharmacist3.8%Physical Therapist3.6%Surgical Physician Assistant0.2%
Largest specialties in Washington (% of in-state providers)

Medicare quality performance, MIPS

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

High performer (top quartile)
MIPS Final Score
100/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%99%
MIPS final score (Surgical Physician Assistant) - 100/100 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).

Practice Address

200 NE MOTHER JOSEPH PL STE 110
Vancouver, WA 98664
(360) 254-6161

Provider Details

NPI 1285229500
Specialty Surgical Physician Assistant
Credentials PA-C
Gender Male
NPI Issued 03/08/2021

CMS Quality Score (MIPS)

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

100
Final Score
Measured-score avg: 83.5
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Nathan Ambrose, 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.

Northwest Surgical Specialists PC
Vancouver, 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 Nathan Ambrose, PA-C. To verify Nathan Ambrose, 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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2024.

223
Total Claims
$3K
Total Drug Cost
124
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
231.067
Total Day Supply
2,583
Generic Drug Cost
$1K
Opioid Claims
89 (39.9% rate)
Antibiotic Claims
15

Patient Demographics

Average Patient Age
71.3 years
Avg HCC Risk Score
0.90
Gender Split
59% female / 41% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Nathan Ambrose, PA-C prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Oxycodone Hcl
 62
Meloxicam
 37
Celecoxib
 23
Dexamethasone
 22
Ondansetron Odt
Ondansetron
19
Cephalexin
 12
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
11
Hydromorphone Hcl
 11

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

More Surgical Physician Assistant in WA → All providers in Washington → Compare specialties →

Surgical Physician Assistant Overview

How Nathan Ambrose, PA-C fits within the Surgical Physician Assistant landscape nationally.

16,380
Surgical Physician Assistant Providers in US
54
States with Surgical Physician Assistant
341
Avg Claims per Provider

Nathan Ambrose, PA-C's 223 claims are below the specialty average of 341.

Nationwide Surgical Physician Assistant peers with similar MIPS or enrollment year

Two federal-record peer sets for Ambrose, both outside Washington so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (100 here).

James Aicardi 100 CA Kamron Allen 100 CA Christelle Ammons 100 FL Elizabeth Ashikari 100 CT

Same NPPES enumeration year (2021)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Mary Owens Winder, GA Nicholas Crump Bryant, AR Matthew Briscoe Boston, MA Rachel Krawczyk Williamsville, NY

Nearby Surgical Physician Assistant Providers in Washington

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

One of 473 Surgical Physician Assistant providers enrolled in Washington, 5 are shown here.

Krystle Agtarap
PA
Olympia, WA
Carlos Aguero
P.A.
Mount Vernon, WA
Aleisha Allen
PA-C
Mount Vernon, WA
Jillanna Allen
PA-C, MS, ATC/L
Wenatchee, WA
Jessica Alvarez
PA-C
Kennewick, WA

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

Frequently Asked Questions

What is Nathan Ambrose, PA-C's specialty? ▼
Nathan Ambrose, PA-C specializes in Surgical Physician Assistant and practices in Vancouver, Washington. Credentials: PA-C.
How much does Nathan Ambrose, PA-C prescribe under Medicare Part D? ▼
In 2024, Nathan Ambrose, PA-C wrote 223 Medicare Part D claims totaling $3K in drug costs for 124 beneficiaries.
What is Nathan Ambrose, PA-C's Medicare quality score? ▼
Nathan Ambrose, PA-C has a CMS MIPS Final Score of 100/100. 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 Nathan Ambrose, PA-C located? ▼
Nathan Ambrose, PA-C is located at 200 NE MOTHER JOSEPH PL STE 110, Vancouver, WA, 98664. Phone: (360) 254-6161.
What is Nathan Ambrose, PA-C's NPI number? ▼
Nathan Ambrose, PA-C's National Provider Identifier (NPI) is 1285229500, issued on 03/08/2021.
Does Nathan Ambrose, PA-C prescribe opioids? ▼
Yes, Nathan Ambrose, PA-C had 89 opioid claims in 2024 with an opioid prescribing rate of 39.9%.
How many Surgical Physician Assistant providers are there in the US? ▼
There are 16,380 Surgical Physician Assistant providers across 54 states in the US. The average Surgical Physician Assistant provider writes 341 Medicare Part D claims per year.
What drugs does Nathan Ambrose, PA-C prescribe most often? ▼
Based on 2024 Medicare Part D data, Nathan Ambrose, PA-C's most frequently prescribed drugs include Oxycodone Hcl, Meloxicam, Celecoxib. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Nathan Ambrose, PA-C accept Medicare? ▼
Nathan Ambrose, PA-C appears in CMS Medicare data with 223 Part D claims and 124 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Nathan Ambrose, PA-C's credentials? ▼
Nathan Ambrose, PA-C's NPI is 1285229500 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.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.