2026 NPPES data Critical Care Medicine (Internal Medicine) Physician NPI 1811980998 MD
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KAREN WESENBERG, MD

Critical Care Medicine (Internal Medicine) Physician in PORTLAND, 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
1K
Medicare Part D claims · 219 beneficiaries · Critical Care Medicine (Internal Medicine) Physician avg: 1K
Generic prescribing
39%
generic claims · 61% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · [object Object]
What the federal data reveals: KAREN WESENBERG, MD is a Critical Care Medicine (Internal Medicine) Physician ([object Object]) practicing in PORTLAND, Oregon with a Medicare Part D prescribing footprint of 1K claims across 219 beneficiaries — 61% brand-name prescribing . Their CMS MIPS Final Score of 100/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: KAREN WESENBERG, MD reported a CMS MIPS final score of 100 out of 100, above the 83.1 national average, and filed 1,140 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

KAREN WESENBERG, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 6 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

KAREN WESENBERG, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 08/24/2005

NPI 1811980998

Primary specialty

Critical Care Medicine (Internal Medicine) Physician

Mid-sized

6,631 US NPIs in this specialty

Medicare Part D claims

1,140 7% vs specialty avg

2023 prescription claims

Specialty avg: 1,069

MIPS final score

100/100 16.900000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Oregon

How Critical Care Medicine (Internal Medicine) Physician compares to other specialties among Oregon providers

Oregon providers

Critical Care Medicine (Internal Medicine) Physician share within Oregon

1. Critical Care Medicine (Internal Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Critical Care Medicine (Internal Medicine) Physician share within Oregon

Medicare quality performance — MIPS

KAREN WESENBERG, MD's 2023 MIPS final score plotted against the Critical Care Medicine (Internal Medicine) Physician national average

High performer (top quartile)
MIPS Final Score
100/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Critical Care Medicine (Internal Medicine) Physician) — 100/100 vs national avg 83.1

0%100%National avg83%99%
MIPS final score (Critical Care Medicine (Internal Medicine) Physician) — 100/100 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).

KAREN WESENBERG, MD is a Critical Care Medicine (Internal Medicine) Physician provider practicing in PORTLAND, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1811980998. 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.

KAREN WESENBERG, MD appears in the CMS NPPES registry as a Critical Care Medicine (Internal Medicine) Physician provider holding MD credentials at 1111 NE 99TH AVE, PORTLAND, OR, 97220, with a listed phone of (503) 963-3030. NPI 1811980998 was issued on 08/24/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what WESENBERG 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 1,140 prescription claims written by this provider, covering 219 Medicare beneficiaries and totaling roughly $543K in drug spend, split 61% brand-name and 39% 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 100/100 for the 2023 performance year (Quality 99.0028, Cost 88.6378), compared with the national average of 83.1.

Critical Care Medicine (Internal Medicine) Physician is a mid-sized specialty nationwide, with 6,631 enrolled providers across 53 states and an average of 1,069 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

1111 NE 99TH AVE
PORTLAND, OR 97220

Provider Details

NPI 1811980998
Specialty Critical Care Medicine (Internal Medicine) Physician
Credentials MD
Gender Female
NPI Issued 08/24/2005

CMS Quality Score (MIPS)

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

100
Final Score
Avg: 83.1
99.0028
Quality
88.6378
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where KAREN WESENBERG, MD 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.

LEGACY MOUNT HOOD MEDICAL CENTER
★★★☆☆ 3/5
GRESHAM, OR
Acute Care Hospitals
CMS CCN: 380025
LEGACY CLINICS LLC
PORTLAND, OR
LEGACY EMANUEL HOSPITAL AND HEALTH CENTER
PORTLAND, OR
LEGACY GOOD SAMARITAN HOSPITAL AND MEDICAL CENTER
PORTLAND, OR
LEGACY MERIDIAN PARK HOSPITAL
TUALATIN, OR
SILVERTON HEALTH
SILVERTON, 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 · Brand-heavy

KAREN WESENBERG, MD — brand share 61.0%
Specialty average (est.)

61% brand-name claims vs 39% generic, on 1,140 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.

1,140
Total Claims
$543K
Total Drug Cost
219
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,798
Total Day Supply
49,916
Brand vs Generic
61% brand / 39% generic
Brand Drug Cost
$521K
Antibiotic Claims
107

Patient Demographics

Average Patient Age
76.0 years
Avg HCC Risk Score
1.72
Gender Split
62% 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
Albuterol Sulfate Hfa
Albuterol Sulfate
120
Prednisone
117
Advair Hfa
Fluticasone Propion/Salmeterol
101
Spiriva Respimat
Tiotropium Bromide
86
Stiolto Respimat
Tiotropium Br/Olodaterol Hcl
78
Azithromycin
77
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
76
Symbicort
Budesonide/Formoterol Fumarate
67
Breo Ellipta
Fluticasone/Vilanterol
42
Montelukast Sodium
28

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

Critical Care Medicine (Internal Medicine) Physician Overview

How KAREN WESENBERG, MD fits within the Critical Care Medicine (Internal Medicine) Physician landscape nationally.

6,631
Critical Care Medicine (Internal Medicine) Physician Providers in US
53
States with Critical Care Medicine (Internal Medicine) Physician
1,069
Avg Claims per Provider

KAREN WESENBERG, MD's 1,140 claims are above the specialty average of 1,069.

Nearby Critical Care Medicine (Internal Medicine) Physician Providers in Oregon

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

Compare Critical Care Medicine (Internal Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KAREN WESENBERG, MD's specialty?
KAREN WESENBERG, MD specializes in Critical Care Medicine (Internal Medicine) Physician and practices in PORTLAND, Oregon. Credentials: MD.
How much does KAREN WESENBERG, MD prescribe under Medicare Part D?
In 2023, KAREN WESENBERG, MD wrote 1,140 Medicare Part D claims totaling $543K in drug costs for 219 beneficiaries.
What is KAREN WESENBERG, MD's Medicare quality score?
KAREN WESENBERG, MD has a CMS MIPS Final Score of 100/100 (Quality: 99.0028, Cost: 88.6378). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is KAREN WESENBERG, MD located?
KAREN WESENBERG, MD is located at 1111 NE 99TH AVE, PORTLAND, OR, 97220. Phone: (503) 963-3030.
What is KAREN WESENBERG, MD's NPI number?
KAREN WESENBERG, MD's National Provider Identifier (NPI) is 1811980998, issued on 08/24/2005.
Does KAREN WESENBERG, MD prescribe more brand-name or generic drugs?
KAREN WESENBERG, MD's prescribing is 61% brand-name and 39% generic drugs by claim count, with $521K in brand drug costs.
How many Critical Care Medicine (Internal Medicine) Physician providers are there in the US?
There are 6,631 Critical Care Medicine (Internal Medicine) Physician providers across 53 states in the US. The average Critical Care Medicine (Internal Medicine) Physician provider writes 1,069 Medicare Part D claims per year.
What drugs does KAREN WESENBERG, MD prescribe most often?
Based on 2023 Medicare Part D data, KAREN WESENBERG, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Prednisone, Advair Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KAREN WESENBERG, MD accept Medicare?
KAREN WESENBERG, MD appears in CMS Medicare data with 1,140 Part D claims and 219 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KAREN WESENBERG, MD's credentials?
KAREN WESENBERG, MD's NPI is 1811980998 with credentials MD. 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