2026 NPPES data Nurse Practitioner NPI 1891142410 APRN
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MICHAEL COWLES, APRN

Nurse Practitioner in TUALATIN, Oregon. 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
831
Medicare Part D claims · 248 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: MICHAEL COWLES, APRN is a Nurse Practitioner ([object Object]) practicing in TUALATIN, Oregon with a Medicare Part D prescribing footprint of 831 claims across 248 beneficiaries — 13% brand-name prescribing .

What stands out: MICHAEL COWLES, APRN filed 831 Medicare Part D claims in 2023 across TUALATIN, Oregon. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

MICHAEL COWLES, APRN at a glance

Quality data not reported

NPI registry status

Active

Issued 05/24/2016

NPI 1891142410

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

831 23% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

Specialty distribution in Oregon

How Nurse Practitioner compares to other specialties among Oregon providers

Oregon providers

Nurse Practitioner share within Oregon

1. Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nurse Practitioner share within Oregon

Specialty board-certification context

Estimated specialty board-certified rate — Nurse Practitioner (ABMS / AOA reference)

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

Est. board-certified rate (Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Nurse Practitioner) — 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).

MICHAEL COWLES, APRN is a Nurse Practitioner provider practicing in TUALATIN, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: APRN. NPI: 1891142410. 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.

MICHAEL COWLES, APRN appears in the CMS NPPES registry as a Nurse Practitioner provider holding APRN credentials at 19185 SW 90TH AVE, TUALATIN, OR, 97062, with a listed phone of (800) 813-2000. NPI 1891142410 was issued on 05/24/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what COWLES 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 831 prescription claims written by this provider, covering 248 Medicare beneficiaries and totaling roughly $41K in drug spend, split 13% brand-name and 87% generic by claim count, with an opioid prescribing rate of 1.8%. 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.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

19185 SW 90TH AVE
TUALATIN, OR 97062

Provider Details

NPI 1891142410
Specialty Nurse Practitioner
Credentials APRN
Gender Male
NPI Issued 05/24/2016

Hospital and facility affiliations

Facilities where MICHAEL COWLES, APRN 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.

KAISER FOUNDATION HEALTH PLAN OF THE NORTHWEST
TUALATIN, 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).

Brand vs generic prescribing mix · Typical

MICHAEL COWLES, APRN — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 831 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.

831
Total Claims
$41K
Total Drug Cost
248
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,727
Total Day Supply
48,168
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$27K
Generic Drug Cost
$13K
Opioid Claims
15 (1.8% rate)
Antibiotic Claims
45

Patient Demographics

Average Patient Age
74.3 years
Avg HCC Risk Score
0.99
Gender Split
63% female / 38% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Losartan Potassium
57
Atorvastatin Calcium
31
Amlodipine Besylate
29
Albuterol Sulfate Hfa
Albuterol Sulfate
23
Gabapentin
21
Potassium Chloride
20
Prednisone
20
Furosemide
17
Meloxicam
17
Triamcinolone Acetonide
17

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

Nurse Practitioner Overview

How MICHAEL COWLES, APRN fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

MICHAEL COWLES, APRN's 831 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in Oregon

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

Compare Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL COWLES, APRN's specialty?
MICHAEL COWLES, APRN specializes in Nurse Practitioner and practices in TUALATIN, Oregon. Credentials: APRN.
How much does MICHAEL COWLES, APRN prescribe under Medicare Part D?
In 2023, MICHAEL COWLES, APRN wrote 831 Medicare Part D claims totaling $41K in drug costs for 248 beneficiaries.
Where is MICHAEL COWLES, APRN located?
MICHAEL COWLES, APRN is located at 19185 SW 90TH AVE, TUALATIN, OR, 97062. Phone: (800) 813-2000.
What is MICHAEL COWLES, APRN's NPI number?
MICHAEL COWLES, APRN's National Provider Identifier (NPI) is 1891142410, issued on 05/24/2016.
Does MICHAEL COWLES, APRN prescribe more brand-name or generic drugs?
MICHAEL COWLES, APRN's prescribing is 13% brand-name and 87% generic drugs by claim count, with $27K in brand drug costs.
Does MICHAEL COWLES, APRN prescribe opioids?
Yes, MICHAEL COWLES, APRN had 15 opioid claims in 2023 with an opioid prescribing rate of 1.8%.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does MICHAEL COWLES, APRN prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL COWLES, APRN's most frequently prescribed drugs include Losartan Potassium, Atorvastatin Calcium, Amlodipine Besylate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL COWLES, APRN accept Medicare?
MICHAEL COWLES, APRN appears in CMS Medicare data with 831 Part D claims and 248 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL COWLES, APRN's credentials?
MICHAEL COWLES, APRN's NPI is 1891142410 with credentials APRN. 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