2026 NPPES data Physician Assistant NPI 1578021739 PA-C
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Mallory Halaas, PA-C

Physician Assistant in Stillwater, Minnesota. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 149,975 in 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
227
Medicare Part D claims · 138 beneficiaries · Physician Assistant avg: 790
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Mallory Halaas, PA-C filed 227 Medicare Part D claims in 2023 as a Physician Assistant in Stillwater, Minnesota.

227
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.

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

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

227 49th percentile higher than 49% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. 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 Mallory Halaas, PA-C?

Quality data not reported

NPI registry status

Active

Issued 03/06/2019

NPI 1578021739

Primary specialty

Physician Assistant

High-volume

149,975 US NPIs in this specialty

Medicare Part D claims

227 71% vs specialty avg

2023 prescription claims

Specialty avg: 790

Specialty distribution in Minnesota

How Physician Assistant compares to other specialties among Minnesota providers

Minnesota providers

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

Behavior Technician - 11.7%Behavior Technician11.7%Clinical Social Worker - 4.7%Clinical Social Worker4.7%Physical Therapist - 4.1%Physical Therapist4.1%Pharmacist - 3.7%Pharmacist3.7%Student in an Organized Health Care Education/Training Program - 3.4%Student in an Organized Health Care Education/Training Program3.4%Mental Health Counselor - 3.1%Mental Health Counselor3.1%Physician Assistant - 2.8%Physician Assistant2.8%
Largest specialties in Minnesota (% 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 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).

Mallory Halaas, PA-C appears in the CMS NPPES registry as a Physician Assistant provider holding PA-C credentials at 1701 CURVE CREST BLVD W STE 104, Stillwater, MN, 55082, with a listed phone of (651) 439-8807. NPI 1578021739 was issued on 03/06/2019. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Halaas 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 227 prescription claims written by this provider, covering 138 Medicare beneficiaries and totaling roughly $3K in drug spend, with an opioid prescribing rate of 61.7%. 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

1701 CURVE CREST BLVD W STE 104
Stillwater, MN 55082

Provider Details

NPI 1578021739
Specialty Physician Assistant
Credentials PA-C
Gender Female
NPI Issued 03/06/2019

Hospital and facility affiliations

Facilities where Mallory Halaas, 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.

Fairview Express Care
Burnsville, MN
University OF Minnesota Health Clinics And Surgery Center Inc
Minneapolis, MN

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.

227
Total Claims
$3K
Total Drug Cost
138
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
230
Total Day Supply
1,738
Generic Drug Cost
$1K
Opioid Claims
140 (61.7% rate)
Antibiotic Claims
38

Patient Demographics

Average Patient Age
72.4 years
Avg HCC Risk Score
1.01
Gender Split
57% female / 43% male

Top Prescribed Drugs (Medicare Part D)

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

What Mallory Halaas, 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
Oxycodone Hcl
99
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
23
Hydroxyzine Pamoate
17
Amoxicillin
15

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

Physician Assistant Overview

How Mallory Halaas, PA-C fits within the Physician Assistant landscape nationally.

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

Mallory Halaas, PA-C's 227 claims are below the specialty average of 790.

Nearby Physician Assistant Providers in Minnesota

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

Compare 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 Minnesota medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby 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 Mallory Halaas, PA-C's specialty?
Mallory Halaas, PA-C specializes in Physician Assistant and practices in Stillwater, Minnesota. Credentials: PA-C.
How much does Mallory Halaas, PA-C prescribe under Medicare Part D?
In 2023, Mallory Halaas, PA-C wrote 227 Medicare Part D claims totaling $3K in drug costs for 138 beneficiaries.
Where is Mallory Halaas, PA-C located?
Mallory Halaas, PA-C is located at 1701 CURVE CREST BLVD W STE 104, Stillwater, MN, 55082. Phone: (651) 439-8807.
What is Mallory Halaas, PA-C's NPI number?
Mallory Halaas, PA-C's National Provider Identifier (NPI) is 1578021739, issued on 03/06/2019.
Does Mallory Halaas, PA-C prescribe opioids?
Yes, Mallory Halaas, PA-C had 140 opioid claims in 2023 with an opioid prescribing rate of 61.7%.
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 Mallory Halaas, PA-C prescribe most often?
Based on 2023 Medicare Part D data, Mallory Halaas, PA-C's most frequently prescribed drugs include Oxycodone Hcl, Oxycodone-Acetaminophen, Hydroxyzine Pamoate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Mallory Halaas, PA-C accept Medicare?
Mallory Halaas, PA-C appears in CMS Medicare data with 227 Part D claims and 138 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Mallory Halaas, PA-C's credentials?
Mallory Halaas, PA-C's NPI is 1578021739 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.