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2026 NPPES data Critical Care Medicine Registered Nurse NPI 1639817976 AG-ACNP
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Stacy Hosenfeld, AG-ACNP

Critical Care Medicine Registered Nurse in Charlottesville, Virginia.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 6,929 in Critical Care Medicine Registered Nurse, 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
181
Medicare Part D claims · 69 beneficiaries · Critical Care Medicine Registered Nurse avg: 832
Generic prescribing
39%
generic claims · 61% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
79.4/100
▼ 4 pts below national avg 83.5 · Above neutral
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Stacy Hosenfeld, AG-ACNP reported a CMS MIPS final score of 79.4/100 - below the 83.5 national average - and filed 181 Medicare Part D claims in 2024.

79.4/100
MIPS score · -4 vs avg
181
Part D claims, 2024
39%
generic prescribing
≥26th
pct among measured MIPS (lower-bound band)

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.

Federal trust snapshot

What official records show about Stacy Hosenfeld, AG-ACNP

Federal records show an active NPI with both Medicare prescribing volume and a measured CMS quality score — objective registry data, not patient reviews.

  • Verified

    NPI registry status

    Active listing in the CMS National Provider Identifier Registry (NPI 1639817976), first enumerated 05/26/2022.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 181 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.

    Source: CMS Part D Prescriber PUF

  • Reported

    CMS quality reporting (MIPS)

    Reported a CMS MIPS final score of 79.4/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Not in federal data

    Individual sanction lookup

    PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.

    Source: State medical board / FSMB

This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.

CMS NPPES provider registry desk

NPI 1639817976 · Critical Care Medicine Registered Nurse

NPI-10 · ENUM-RECENT · TAX-MID · MIPS-BELOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1639817976
  • ENUM-RECENT 2022
  • TAX-MID 7K Critical Care
  • MIPS-BELOW 79.4/100
  • RX-LIGHT 181
  • BOOK-THIN 169 in Virginia
  • PHOTO-FINISH Natalie Oberstar · ±0.1

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Stacy Hosenfeld, AG-ACNP's MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

79 ≥ 26th percentile 26% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). Below this entry. 30–40: 2,746 measured providers (1%). Below this entry. 40–50: 2,928 measured providers (1%). Below this entry. 50–60: 5,882 measured providers (1%). Below this entry. 60–70: 13,906 measured providers (3%). Below this entry. 70–80: 94,570 measured providers (21%). This entry sits in this band. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured providers. 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Stacy Hosenfeld, AG-ACNP sits

This provider among critical care medicine registered nurse peers

Across the 184 critical care medicine registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Stacy Hosenfeld, AG-ACNP writes more Part D claims than 47% of them and scores higher on MIPS quality than 29% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 97Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 67Stacy Hosenfeld, AG-ACNP, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 29
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one critical care medicine registered nurse peer from a representative sample of 60; the gold marker is Stacy Hosenfeld, AG-ACNP. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

What does the federal data show about Stacy Hosenfeld, AG-ACNP?

Near national average

NPI registry status

Active

Issued 05/26/2022

NPI 1639817976

Primary specialty

Critical Care Medicine Registered Nurse

Mid-sized

6,929 US NPIs in this specialty

Medicare Part D claims

181 78% vs specialty avg

2024 prescription claims

Specialty avg: 832

MIPS final score

79.4/100 4.1 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in Virginia

How Critical Care Medicine Registered Nurse compares to other specialties among Virginia providers

Virginia providers
Behavior Technician5.5%Clinical Social Worker5.2%Student in an Organized Heal…4.7%Physical Therapist4.6%Pharmacist4.4%Professional Counselor4%Critical Care Medicine Regis…0.1%
Largest specialties in Virginia (% of in-state providers)

Medicare quality performance, MIPS

Stacy Hosenfeld, AG-ACNP's 2023 MIPS final score plotted against the Critical Care Medicine Registered Nurse national average

Near national average
MIPS Final Score
79.4/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%79.4%
MIPS final score (Critical Care Medicine Registered Nurse) - 79.4/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

1221 LEE STREET
Charlottesville, VA 22908
(434) 243-1000

Provider Details

NPI 1639817976
Specialty Critical Care Medicine Registered Nurse
Credentials AG-ACNP
Gender Female
NPI Issued 05/26/2022

CMS Quality Score (MIPS)

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

79.3949
Final Score
Measured-score avg: 83.5
73.6607
Quality
57.6556
Cost
100
Promoting Interoperability

Reporting: Group practice

Brand vs generic prescribing mix · Brand-heavy

Stacy Hosenfeld, AG-ACNP - brand share 61.0%
Critical Care Medicine Registered Nurse average

61% brand-name claims vs 39% generic, on 181 2024 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 2024.

181
Total Claims
$94K
Total Drug Cost
69
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
323.6
Total Day Supply
9,529
Brand vs Generic
61% brand / 39% generic
Brand Drug Cost
$87K
Generic Drug Cost
$7K

Patient Demographics

Average Patient Age
72.9 years
Avg HCC Risk Score
1.72
Gender Split
46% female / 54% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.

What Stacy Hosenfeld, AG-ACNP prescribes most

Top Medicare Part D drugs by claim count, 2024

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2024
Drug Claims
Eliquis
Apixaban
84
Rosuvastatin Calcium
 17
Atorvastatin Calcium
 14

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

More Critical Care Medicine Registered Nurse in VA → All providers in Virginia → Compare specialties →

Critical Care Medicine Registered Nurse Overview

How Stacy Hosenfeld, AG-ACNP fits within the Critical Care Medicine Registered Nurse landscape nationally.

6,929
Critical Care Medicine Registered Nurse Providers in US
53
States with Critical Care Medicine Registered Nurse
832
Avg Claims per Provider

Stacy Hosenfeld, AG-ACNP's 181 claims are below the specialty average of 832.

Nationwide Critical Care Medicine Registered Nurse peers with similar MIPS or enrollment year

Two federal-record peer sets for Hosenfeld, both outside Virginia so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (79.4 here).

Natalie Oberstar 79.5 OH Megan Hornyak 79.5 PA Abigail Fox 79.6 MI Linda Shelley 79.7 UT

Same NPPES enumeration year (2022)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Wilhelminia Drake Roslyn, NY Sarah Walker Pittsburgh, PA Anna Bordner Lakewood, CO Olivia Smith Madison, TN

Nearby Critical Care Medicine Registered Nurse Providers in Virginia

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

One of 169 Critical Care Medicine Registered Nurse providers enrolled in Virginia, 5 are shown here.

Manaia Alaimalo
FNP-C
Quantico, VA
Kathleen Alonso
R.N.
Chesapeake, VA
Alexis Andrews
RN
Roanoke, VA
Emily Apple
BSN, RN, CCRN
Abingdon, VA
Brian Arnett
New Kent, VA

Compare Critical Care Medicine Registered Nurse nationally: see state-by-state distribution →

Frequently Asked Questions

What is Stacy Hosenfeld, AG-ACNP's specialty? ▼
Stacy Hosenfeld, AG-ACNP specializes in Critical Care Medicine Registered Nurse and practices in Charlottesville, Virginia. Credentials: AG-ACNP.
How much does Stacy Hosenfeld, AG-ACNP prescribe under Medicare Part D? ▼
In 2024, Stacy Hosenfeld, AG-ACNP wrote 181 Medicare Part D claims totaling $94K in drug costs for 69 beneficiaries.
What is Stacy Hosenfeld, AG-ACNP's Medicare quality score? ▼
Stacy Hosenfeld, AG-ACNP has a CMS MIPS Final Score of 79.4/100 (Quality: 73.7, Cost: 57.7). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Stacy Hosenfeld, AG-ACNP located? ▼
Stacy Hosenfeld, AG-ACNP is located at 1221 LEE STREET, Charlottesville, VA, 22908. Phone: (434) 243-1000.
What is Stacy Hosenfeld, AG-ACNP's NPI number? ▼
Stacy Hosenfeld, AG-ACNP's National Provider Identifier (NPI) is 1639817976, issued on 05/26/2022.
Does Stacy Hosenfeld, AG-ACNP prescribe more brand-name or generic drugs? ▼
Stacy Hosenfeld, AG-ACNP's prescribing is 61% brand-name and 39% generic drugs by claim count, with $87K in brand drug costs.
How many Critical Care Medicine Registered Nurse providers are there in the US? ▼
There are 6,929 Critical Care Medicine Registered Nurse providers across 53 states in the US. The average Critical Care Medicine Registered Nurse provider writes 832 Medicare Part D claims per year.
What drugs does Stacy Hosenfeld, AG-ACNP prescribe most often? ▼
Based on 2024 Medicare Part D data, Stacy Hosenfeld, AG-ACNP's most frequently prescribed drugs include Eliquis, Rosuvastatin Calcium, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Stacy Hosenfeld, AG-ACNP accept Medicare? ▼
Stacy Hosenfeld, AG-ACNP appears in CMS Medicare data with 181 Part D claims and 69 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Stacy Hosenfeld, AG-ACNP's credentials? ▼
Stacy Hosenfeld, AG-ACNP's NPI is 1639817976 with credentials AG-ACNP. 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

View source datasets and methodology notes
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 (2024). 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 August 2026 (NPPES) / 2024 (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 editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of August 2026.