2026 NPPES data Medical Physician Assistant NPI 1831165737 PA-C
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Katherine Bischof, PA-C

Medical Physician Assistant in Portland, Oregon. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 40,527 in Medical 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
4K
Medicare Part D claims · 764 beneficiaries · Medical Physician Assistant avg: 1K
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Katherine Bischof, PA-C filed 3,985 Medicare Part D claims in 2023 as a Medical Physician Assistant in Portland, Oregon.

4K
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.

Katherine Bischof, PA-C's Medicare Part D volume vs every U.S. prescriber

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

3,985 Top 9% higher than 91% 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. 2K+: 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 Katherine Bischof, PA-C?

Quality data not reported

NPI registry status

Active

Issued 02/28/2006

NPI 1831165737

Primary specialty

Medical Physician Assistant

Mid-sized

40,527 US NPIs in this specialty

Medicare Part D claims

3,985 270% vs specialty avg

2023 prescription claims

Specialty avg: 1,077

Specialty distribution in Oregon

How Medical Physician Assistant compares to other specialties among Oregon providers

Oregon providers

Largest specialties in Oregon (% of in-state providers)

Mental Health Counselor - 12.1%Mental Health Counselor12.1%Massage Therapist - 4.8%Massage Therapist4.8%Counselor - 3.9%Counselor3.9%Addiction (Substance Use Disorder) Counselor - 3.5%Addiction (Substance Use Disorder) Counselor3.5%Case Manager/Care Coordinator - 3.4%Case Manager/Care Coordinator3.4%Clinical Social Worker - 3.3%Clinical Social Worker3.3%Medical Physician Assistant - 0.5%Medical Physician Assistant0.5%
Largest specialties in Oregon (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Medical Physician Assistant. Verify directly:

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).

Katherine Bischof, PA-C appears in the CMS NPPES registry as a Medical Physician Assistant provider holding PA-C credentials at 3181 SW SAM JACKSON PARK RD, Portland, OR, 97239, with a listed phone of (503) 494-7400. NPI 1831165737 was issued on 02/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Bischof 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 3,985 prescription claims written by this provider, covering 764 Medicare beneficiaries and totaling roughly $971K 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.

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

3181 SW SAM JACKSON PARK RD
Portland, OR 97239

Provider Details

NPI 1831165737
Specialty Medical Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 02/28/2006

Hospital and facility affiliations

Facilities where Katherine Bischof, 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.

Peacehealth
Roseburg, OR

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.

3,985
Total Claims
$971K
Total Drug Cost
764
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
10,016
Total Day Supply
298,280
Generic Drug Cost
$83K

Patient Demographics

Average Patient Age
76.4 years
Avg HCC Risk Score
1.66
Gender Split
45% female / 55% male
Age Distribution
<65: 54, 65-74: 253, 75-84: 326, 85+: 131

Top Prescribed Drugs (Medicare Part D)

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

What Katherine Bischof, PA-C 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
Metoprolol Succinate
577
Eliquis
Apixaban
360
Carvedilol
304
Atorvastatin Calcium
288
Furosemide
233
Losartan Potassium
155
Spironolactone
155
Torsemide
142
Isosorbide Mononitrate Er
Isosorbide Mononitrate
141
Rosuvastatin Calcium
137

* 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 Katherine Bischof, 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

Katherine Bischof, PA-C's 3,985 claims are above the specialty average of 1,077.

Nearby Medical Physician Assistant Providers in Oregon

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

Compare Medical 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 Oregon medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Medical 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 Katherine Bischof, PA-C's specialty?
Katherine Bischof, PA-C specializes in Medical Physician Assistant and practices in Portland, Oregon. Credentials: PA-C.
How much does Katherine Bischof, PA-C prescribe under Medicare Part D?
In 2023, Katherine Bischof, PA-C wrote 3,985 Medicare Part D claims totaling $971K in drug costs for 764 beneficiaries.
Where is Katherine Bischof, PA-C located?
Katherine Bischof, PA-C is located at 3181 SW SAM JACKSON PARK RD, Portland, OR, 97239. Phone: (503) 494-7400.
What is Katherine Bischof, PA-C's NPI number?
Katherine Bischof, PA-C's National Provider Identifier (NPI) is 1831165737, issued on 02/28/2006.
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 Katherine Bischof, PA-C prescribe most often?
Based on 2023 Medicare Part D data, Katherine Bischof, PA-C's most frequently prescribed drugs include Metoprolol Succinate, Eliquis, Carvedilol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Katherine Bischof, PA-C accept Medicare?
Katherine Bischof, PA-C appears in CMS Medicare data with 3,985 Part D claims and 764 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Katherine Bischof, PA-C's credentials?
Katherine Bischof, PA-C's NPI is 1831165737 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.
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.