2026 NPPES data Physician Assistant NPI 1134575608 PA
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KATRINA MURPHY, PA

Physician Assistant in BELLINGHAM, 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
5K
Medicare Part D claims · 476 beneficiaries · Physician Assistant avg: 790
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

KATRINA MURPHY, PA filed 4,943 Medicare Part D claims in 2023 as a Physician Assistant in BELLINGHAM, Washington, prescribing 93% generic.

5K
Part D claims, 2023
93%
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.

KATRINA MURPHY, PA's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

4,943 Top 6% higher than 94% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

What does the federal data show about KATRINA MURPHY, PA?

Quality data not reported

NPI registry status

Active

Issued 05/13/2016

NPI 1134575608

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

4,943 526% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Washington

How Physician Assistant compares to other specialties among Washington providers

Washington providers

Physician Assistant share within Washington

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

Specialty board-certification context

Estimated specialty board-certified rate — Physician Assistant (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Physician Assistant ABMS/AOA estimate

Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Physician Assistant) — ABMS / AOA estimate

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).

KATRINA MURPHY, PA appears in the CMS NPPES registry as a Physician Assistant provider holding PA credentials at 4545 CORDATA PKWY, BELLINGHAM, WA, 98226, with a listed phone of (360) 738-2200. NPI 1134575608 was issued on 05/13/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MURPHY 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 4,943 prescription claims written by this provider, covering 476 Medicare beneficiaries and totaling roughly $367K in drug spend, split 7% brand-name and 93% generic by claim count, with an opioid prescribing rate of 2.9%. 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.

Physician Assistant is a high-volume specialty nationwide, with 149,975 enrolled providers across 56 states and an average of 790 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

4545 CORDATA PKWY
BELLINGHAM, WA 98226

Provider Details

NPI 1134575608
Specialty Physician Assistant
Credentials PA
Gender Female
NPI Issued 05/13/2016

Hospital and facility affiliations

Facilities where KATRINA MURPHY, PA 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.

PEACEHEALTH
BELLINGHAM, 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 KATRINA MURPHY, PA. To verify KATRINA MURPHY, PA'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

KATRINA MURPHY, PA — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 4,943 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.

4,943
Total Claims
$367K
Total Drug Cost
476
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
10,975
Total Day Supply
313,983
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$267K
Generic Drug Cost
$98K
Opioid Claims
141 (2.9% rate)
Antibiotic Claims
102

Patient Demographics

Average Patient Age
71.9 years
Avg HCC Risk Score
1.19
Gender Split
73% female / 27% male
Age Distribution
<65: 45, 65-74: 251, 75-84: 147, 85+: 33

Top Prescribed Drugs (Medicare Part D)

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

What KATRINA MURPHY, PA prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Levothyroxine Sodium
244
Atorvastatin Calcium
238
Amlodipine Besylate
190
Rosuvastatin Calcium
188
Losartan Potassium
160
Lisinopril
145
Gabapentin
144
Omeprazole
137
Trazodone Hcl
124
Metformin Hcl Er
Metformin Hcl
102

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

Physician Assistant Overview

How KATRINA MURPHY, PA fits within the Physician Assistant landscape nationally.

149,975
Physician Assistant Providers in US
56
States with Physician Assistant
790
Avg Claims per Provider

KATRINA MURPHY, PA's 4,943 claims are above the specialty average of 790.

Nearby Physician Assistant Providers in Washington

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

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

Frequently Asked Questions

What is KATRINA MURPHY, PA's specialty?
KATRINA MURPHY, PA specializes in Physician Assistant and practices in BELLINGHAM, Washington. Credentials: PA.
How much does KATRINA MURPHY, PA prescribe under Medicare Part D?
In 2023, KATRINA MURPHY, PA wrote 4,943 Medicare Part D claims totaling $367K in drug costs for 476 beneficiaries.
Where is KATRINA MURPHY, PA located?
KATRINA MURPHY, PA is located at 4545 CORDATA PKWY, BELLINGHAM, WA, 98226. Phone: (360) 738-2200.
What is KATRINA MURPHY, PA's NPI number?
KATRINA MURPHY, PA's National Provider Identifier (NPI) is 1134575608, issued on 05/13/2016.
Does KATRINA MURPHY, PA prescribe more brand-name or generic drugs?
KATRINA MURPHY, PA's prescribing is 7% brand-name and 93% generic drugs by claim count, with $267K in brand drug costs.
Does KATRINA MURPHY, PA prescribe opioids?
Yes, KATRINA MURPHY, PA had 141 opioid claims in 2023 with an opioid prescribing rate of 2.9%.
How many Physician Assistant providers are there in the US?
There are 149,975 Physician Assistant providers across 56 states in the US. The average Physician Assistant provider writes 790 Medicare Part D claims per year.
What drugs does KATRINA MURPHY, PA prescribe most often?
Based on 2023 Medicare Part D data, KATRINA MURPHY, PA's most frequently prescribed drugs include Levothyroxine Sodium, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KATRINA MURPHY, PA accept Medicare?
KATRINA MURPHY, PA appears in CMS Medicare data with 4,943 Part D claims and 476 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KATRINA MURPHY, PA's credentials?
KATRINA MURPHY, PA's NPI is 1134575608 with credentials PA. 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.
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