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2026 NPPES data Critical Care Medicine Nurse Practitioner NPI 1447423298 NP
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Irene Marker, NP

Critical Care Medicine Nurse Practitioner in Beverly Hills, California.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 1,490 in Critical Care Medicine Nurse Practitioner, 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 · 79 beneficiaries · Critical Care Medicine Nurse Practitioner avg: 425
Generic prescribing
76%
generic claims · 24% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
85.7/100
▲ 2 pts above 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

Irene Marker, NP reported a CMS MIPS final score of 85.7/100 - above the 83.5 national average - and filed 227 Medicare Part D claims in 2024.

85.7/100
MIPS score · +2 vs avg
227
Part D claims, 2024
76%
generic prescribing
≥46th
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 Irene Marker, NP

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 1447423298), first enumerated 04/11/2008.

    Source: CMS NPPES

  • Reported

    Medicare Part D participation

    Filed 227 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 85.7/100 in the Quality Payment Program — a federal quality measure, not a patient review.

    Source: CMS Quality Payment Program

  • Reported

    Hospital affiliations

    1 CMS Care Compare hospital affiliation on record — practice footprint from the Doctors and Clinicians file.

    Source: CMS Care Compare

  • State context

    State board disciplinary context

    California statewide board action statistics are published annually — these figures describe aggregate state activity, not Irene Marker, NP's individual license status. Verify directly with the state medical board.

    Source: MBC annual report 2023

  • 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 1447423298 · Critical Care Medicine Nurse Practitioner

NPI-10 · ENUM-MID · TAX-NARROW · MIPS-INLINE · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1447423298
  • ENUM-MID 2008
  • TAX-NARROW 1,490
  • MIPS-INLINE 85.7/100
  • RX-LIGHT 227
  • BOOK-THIN 103 in California
  • PHOTO-FINISH Briana Torrey, CNP · ±0.0

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

Irene Marker, NP'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.

86 ≥ 46th percentile 46% 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%). Below this entry. 80–90: 129,887 measured providers (29%). This entry sits in this band. 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 Irene Marker, NP sits

This provider among critical care medicine nurse practitioner peers

Across the 135 critical care medicine nurse practitioner providers who report both Medicare Part D prescribing and a MIPS quality score, Irene Marker, NP writes more Part D claims than 65% of them and scores higher on MIPS quality than 47% - placing this provider in the high-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 quality0255075100024.949.974.899.8Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 5Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 75Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 90Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 7Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 93Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 3Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 10Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 13Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 12Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 95Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 2Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 8Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 17Irene Marker, NP, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 47
Part D claim volume vs MIPS quality, by specialty percentile

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

What does the federal data show about Irene Marker, NP?

High performer (top quartile)

NPI registry status

Active

Issued 04/11/2008

NPI 1447423298

Primary specialty

Critical Care Medicine Nurse Practitioner

Niche

1,490 US NPIs in this specialty

Medicare Part D claims

227 47% vs specialty avg

2024 prescription claims

Specialty avg: 425

MIPS final score

85.7/100 2.2 pts vs avg

Above neutral band

vs 83.5 national avg

Specialty distribution in California

How Critical Care Medicine Nurse Practitioner compares to other specialties among California providers

California providers
Behavior Technician17.9%Marriage & Family Therapist5.4%Student in an Organized Heal…5.1%Mental Health Counselor3.7%Pharmacist3.4%Clinical Social Worker3.1%Critical Care Medicine Nurse…0%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Irene Marker, NP's 2023 MIPS final score plotted against the Critical Care Medicine Nurse Practitioner national average

High performer (top quartile)
MIPS Final Score
85.7/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%85.7%
MIPS final score (Critical Care Medicine Nurse Practitioner) - 85.7/100 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

8536 WILSHIRE BLVD
Beverly Hills, CA 90211
(310) 423-2077

Provider Details

NPI 1447423298
Specialty Critical Care Medicine Nurse Practitioner
Credentials NP
Gender Female
NPI Issued 04/11/2008

CMS Quality Score (MIPS)

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

85.7185
Final Score
Measured-score avg: 83.5
85.6751
Quality
61.479
Cost
100
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Irene Marker, NP 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.

Cedars-Sinai Medical Care Foundation
Beverly Hills, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

License & disciplinary context - California MBC 2023 annual report

Aggregate state board data only, NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 - they are NOT specific to Irene Marker, NP. To verify Irene Marker, NP's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

Irene Marker, NP - brand share 24.0%
Critical Care Medicine Nurse Practitioner average

24% brand-name claims vs 76% generic, on 227 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.

227
Total Claims
$261K
Total Drug Cost
79
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
494.033
Total Day Supply
14,750
Brand vs Generic
24% brand / 76% generic
Brand Drug Cost
$258K
Generic Drug Cost
$2K

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
2.70
Gender Split
33% female / 67% male
Age Distribution
<65: 13, 65-74: 35, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What Irene Marker, NP 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
Carvedilol
 27
Metoprolol Succinate
 20
Entresto
Sacubitril/Valsartan
16
Amlodipine Besylate
 12
Eliquis
Apixaban
12
Spironolactone
 12
Amiodarone Hcl
 11
Atorvastatin Calcium
 11

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

More Critical Care Medicine Nurse Practitioner in CA → All providers in California → Compare specialties →

Critical Care Medicine Nurse Practitioner Overview

How Irene Marker, NP fits within the Critical Care Medicine Nurse Practitioner landscape nationally.

1,490
Critical Care Medicine Nurse Practitioner Providers in US
51
States with Critical Care Medicine Nurse Practitioner
425
Avg Claims per Provider

Irene Marker, NP's 227 claims are below the specialty average of 425.

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

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

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (85.7 here).

Briana Torrey 85.7 MA Jennifer Harrison 85.6 AL Margaret Burke 85.5 PA Megan Lettieri 85.5 PA

Same NPPES enumeration year (2008)

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

Andreia Cage Saint Louis, MO Suzanne Chopra Philadelphia, PA Marilen Scott Dallas, TX Patricia Kroekel Langhorne, PA

Nearby Critical Care Medicine Nurse Practitioner Providers in California

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

One of 103 Critical Care Medicine Nurse Practitioner providers enrolled in California, 5 are shown here.

Daniel Alvarado
FNP
Gridley, CA
Dr. Maria Amos
DNP
San Diego, CA
Maria Amada Apacible
San Francisco, CA
Jaime Appel
FNP
San Diego, CA
Susan Araujo
NP, PA
Fresno, CA

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

Frequently Asked Questions

What is Irene Marker, NP's specialty? ▼
Irene Marker, NP specializes in Critical Care Medicine Nurse Practitioner and practices in Beverly Hills, California. Credentials: NP.
How much does Irene Marker, NP prescribe under Medicare Part D? ▼
In 2024, Irene Marker, NP wrote 227 Medicare Part D claims totaling $261K in drug costs for 79 beneficiaries.
What is Irene Marker, NP's Medicare quality score? ▼
Irene Marker, NP has a CMS MIPS Final Score of 85.7/100 (Quality: 85.7, Cost: 61.5). 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 Irene Marker, NP located? ▼
Irene Marker, NP is located at 8536 WILSHIRE BLVD, Beverly Hills, CA, 90211. Phone: (310) 423-2077.
What is Irene Marker, NP's NPI number? ▼
Irene Marker, NP's National Provider Identifier (NPI) is 1447423298, issued on 04/11/2008.
Does Irene Marker, NP prescribe more brand-name or generic drugs? ▼
Irene Marker, NP's prescribing is 24% brand-name and 76% generic drugs by claim count, with $258K in brand drug costs.
How many Critical Care Medicine Nurse Practitioner providers are there in the US? ▼
There are 1,490 Critical Care Medicine Nurse Practitioner providers across 51 states in the US. The average Critical Care Medicine Nurse Practitioner provider writes 425 Medicare Part D claims per year.
What drugs does Irene Marker, NP prescribe most often? ▼
Based on 2024 Medicare Part D data, Irene Marker, NP's most frequently prescribed drugs include Carvedilol, Metoprolol Succinate, Entresto. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Irene Marker, NP accept Medicare? ▼
Irene Marker, NP appears in CMS Medicare data with 227 Part D claims and 79 Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Irene Marker, NP's credentials? ▼
Irene Marker, NP's NPI is 1447423298 with credentials NP. 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.