2026 NPPES data Internal Medicine Physician NPI 1275510216 MD
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KAREN AARESTAD, MD

Internal Medicine Physician in BRAINERD, Minnesota. 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
212
Medicare Part D claims · 26 beneficiaries · Internal Medicine Physician avg: 3K
Generic prescribing
92%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: KAREN AARESTAD, MD is a Internal Medicine Physician ([object Object]) practicing in BRAINERD, Minnesota with a Medicare Part D prescribing footprint of 212 claims across 26 beneficiaries — 8% brand-name prescribing .

What stands out: KAREN AARESTAD, MD filed 212 Medicare Part D claims in 2023 across BRAINERD, Minnesota. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

KAREN AARESTAD, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

KAREN AARESTAD, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 12/30/2005

NPI 1275510216

Primary specialty

Internal Medicine Physician

High-volume

172,858 US NPIs in this specialty

Medicare Part D claims

212 92% vs specialty avg

2023 prescription claims

Specialty avg: 2,716

Specialty distribution in Minnesota

How Internal Medicine Physician compares to other specialties among Minnesota providers

Minnesota providers

Internal Medicine Physician share within Minnesota

1. Internal Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Internal Medicine Physician share within Minnesota

Specialty board-certification context

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

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

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

0%100%78%
Est. board-certified rate (Internal Medicine Physician) — 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).

KAREN AARESTAD, MD is a Internal Medicine Physician provider practicing in BRAINERD, Minnesota, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1275510216. 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 AARESTAD, MD appears in the CMS NPPES registry as a Internal Medicine Physician provider holding MD credentials at 722 NW 7TH ST, BRAINERD, MN, 56401, with a listed phone of (218) 855-1115. NPI 1275510216 was issued on 12/30/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AARESTAD 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 212 prescription claims written by this provider, covering 26 Medicare beneficiaries and totaling roughly $10K in drug spend, split 8% brand-name and 92% 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.

Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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

722 NW 7TH ST
BRAINERD, MN 56401

Provider Details

NPI 1275510216
Specialty Internal Medicine Physician
Credentials MD
Gender Female
NPI Issued 12/30/2005

Brand vs generic prescribing mix · Generic-heavy

KAREN AARESTAD, MD — brand share 8.0%
Specialty average (est.)

8% brand-name claims vs 92% generic, on 212 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.

212
Total Claims
$10K
Total Drug Cost
26
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
486
Total Day Supply
14,471
Brand vs Generic
8% brand / 92% generic
Brand Drug Cost
$7K
Generic Drug Cost
$3K

Patient Demographics

Average Patient Age
78.5 years
Avg HCC Risk Score
1.17

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
21
Hydrochlorothiazide
20
Tamsulosin Hcl
18
Valsartan
12
Omeprazole
11

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

Internal Medicine Physician Overview

How KAREN AARESTAD, MD fits within the Internal Medicine Physician landscape nationally.

172,858
Internal Medicine Physician Providers in US
56
States with Internal Medicine Physician
2,716
Avg Claims per Provider

KAREN AARESTAD, MD's 212 claims are below the specialty average of 2,716.

Nearby Internal Medicine Physician Providers in Minnesota

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

Compare Internal Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is KAREN AARESTAD, MD's specialty?
KAREN AARESTAD, MD specializes in Internal Medicine Physician and practices in BRAINERD, Minnesota. Credentials: MD.
How much does KAREN AARESTAD, MD prescribe under Medicare Part D?
In 2023, KAREN AARESTAD, MD wrote 212 Medicare Part D claims totaling $10K in drug costs for 26 beneficiaries.
Where is KAREN AARESTAD, MD located?
KAREN AARESTAD, MD is located at 722 NW 7TH ST, BRAINERD, MN, 56401. Phone: (218) 855-1115.
What is KAREN AARESTAD, MD's NPI number?
KAREN AARESTAD, MD's National Provider Identifier (NPI) is 1275510216, issued on 12/30/2005.
Does KAREN AARESTAD, MD prescribe more brand-name or generic drugs?
KAREN AARESTAD, MD's prescribing is 8% brand-name and 92% generic drugs by claim count, with $7K in brand drug costs.
How many Internal Medicine Physician providers are there in the US?
There are 172,858 Internal Medicine Physician providers across 56 states in the US. The average Internal Medicine Physician provider writes 2,716 Medicare Part D claims per year.
What drugs does KAREN AARESTAD, MD prescribe most often?
Based on 2023 Medicare Part D data, KAREN AARESTAD, MD's most frequently prescribed drugs include Losartan Potassium, Hydrochlorothiazide, Tamsulosin Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does KAREN AARESTAD, MD accept Medicare?
KAREN AARESTAD, MD appears in CMS Medicare data with 212 Part D claims and 26 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify KAREN AARESTAD, MD's credentials?
KAREN AARESTAD, MD's NPI is 1275510216 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.
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