2026 NPPES data Nurse Practitioner NPI 1144500398 N.P.
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HOLLY ANTONYAN, N.P.

Nurse Practitioner in TORRANCE, California. 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
582
Medicare Part D claims · 208 beneficiaries · Nurse Practitioner avg: 1K
Generic prescribing
91%
generic claims · 9% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
77.8638/100
▼ 5 pts below national avg 83.1 · [object Object]
Industry payments
$4.2K
80 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: HOLLY ANTONYAN, N.P. is a Nurse Practitioner ([object Object]) practicing in TORRANCE, California with a Medicare Part D prescribing footprint of 582 claims across 208 beneficiaries — 9% brand-name prescribing . Their CMS MIPS Final Score of 77.8638/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $4.2K across 80 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: HOLLY ANTONYAN, N.P. reported a CMS MIPS final score of 77.8638 out of 100, below the 83.1 national average, and filed 582 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

HOLLY ANTONYAN, N.P. at a glance

Below national average

NPI registry status

Active

Issued 08/19/2011

NPI 1144500398

Primary specialty

Nurse Practitioner

High-volume

87,227 US NPIs in this specialty

Medicare Part D claims

582 46% vs specialty avg

2023 prescription claims

Specialty avg: 1,084

MIPS final score

77.8638/100 5.236199999999997% pts

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Nurse Practitioner compares to other specialties among California providers

California providers

Nurse Practitioner share within California

1. Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Nurse Practitioner share within California

Medicare quality performance — MIPS

HOLLY ANTONYAN, N.P.'s 2023 MIPS final score plotted against the Nurse Practitioner national average

Below national average
MIPS Final Score
77.8638/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Nurse Practitioner) — 77.8638/100 vs national avg 83.1

0%100%National avg83%77.9%
MIPS final score (Nurse Practitioner) — 77.8638/100 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).

HOLLY ANTONYAN, N.P. is a Nurse Practitioner provider practicing in TORRANCE, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: N.P.. NPI: 1144500398. 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.

HOLLY ANTONYAN, N.P. appears in the CMS NPPES registry as a Nurse Practitioner provider holding N.P. credentials at 24520 HAWTHORNE BLVD STE 240, TORRANCE, CA, 90505, with a listed phone of (310) 300-6206. NPI 1144500398 was issued on 08/19/2011. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ANTONYAN 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 582 prescription claims written by this provider, covering 208 Medicare beneficiaries and totaling roughly $520K in drug spend, split 9% brand-name and 91% 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 77.8638/100 for the 2023 performance year (Quality 58.0559, Cost 73.9901), compared with the national average of 83.1.

Nurse Practitioner is a high-volume specialty nationwide, with 87,227 enrolled providers across 56 states and an average of 1,084 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

24520 HAWTHORNE BLVD STE 240
TORRANCE, CA 90505

Provider Details

NPI 1144500398
Specialty Nurse Practitioner
Credentials N.P.
Gender Female
NPI Issued 08/19/2011

CMS Quality Score (MIPS)

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

77.8638
Final Score
Avg: 83.1
58.0559
Quality
73.9901
Cost
93
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where HOLLY ANTONYAN, N.P. 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.

HILLSIDE DERMATOLOGY
TORRANCE, 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).

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for HOLLY ANTONYAN, N.P.. Source: openpaymentsdata.cms.gov.

Total received

$4.2K

Largest payer

Lumenis BE inc

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

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 HOLLY ANTONYAN, N.P.. To verify HOLLY ANTONYAN, N.P.'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 · Generic-heavy

HOLLY ANTONYAN, N.P. — brand share 9.0%
Specialty average (est.)

9% brand-name claims vs 91% generic, on 582 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.

582
Total Claims
$520K
Total Drug Cost
208
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
644
Total Day Supply
17,266
Brand vs Generic
9% brand / 91% generic
Brand Drug Cost
$483K
Generic Drug Cost
$37K
Antibiotic Claims
22

Patient Demographics

Average Patient Age
75.2 years
Avg HCC Risk Score
1.03
Gender Split
65% female / 35% 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
Triamcinolone Acetonide
99
Clobetasol Propionate
67
Ketoconazole
64
Metronidazole
34
Valacyclovir
Valacyclovir Hcl
31
Betamethasone Dipropionate
25
Doxycycline Hyclate
21
Mupirocin
21
Clindamycin Phosphate
15
Hydroxyzine Hcl
15

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

Nurse Practitioner Overview

How HOLLY ANTONYAN, N.P. fits within the Nurse Practitioner landscape nationally.

87,227
Nurse Practitioner Providers in US
56
States with Nurse Practitioner
1,084
Avg Claims per Provider

HOLLY ANTONYAN, N.P.'s 582 claims are below the specialty average of 1,084.

Nearby Nurse Practitioner Providers in California

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

Compare Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is HOLLY ANTONYAN, N.P.'s specialty?
HOLLY ANTONYAN, N.P. specializes in Nurse Practitioner and practices in TORRANCE, California. Credentials: N.P..
How much does HOLLY ANTONYAN, N.P. prescribe under Medicare Part D?
In 2023, HOLLY ANTONYAN, N.P. wrote 582 Medicare Part D claims totaling $520K in drug costs for 208 beneficiaries.
What is HOLLY ANTONYAN, N.P.'s Medicare quality score?
HOLLY ANTONYAN, N.P. has a CMS MIPS Final Score of 77.8638/100 (Quality: 58.0559, Cost: 73.9901). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is HOLLY ANTONYAN, N.P. located?
HOLLY ANTONYAN, N.P. is located at 24520 HAWTHORNE BLVD STE 240, TORRANCE, CA, 90505. Phone: (310) 300-6206.
What is HOLLY ANTONYAN, N.P.'s NPI number?
HOLLY ANTONYAN, N.P.'s National Provider Identifier (NPI) is 1144500398, issued on 08/19/2011.
Does HOLLY ANTONYAN, N.P. prescribe more brand-name or generic drugs?
HOLLY ANTONYAN, N.P.'s prescribing is 9% brand-name and 91% generic drugs by claim count, with $483K in brand drug costs.
How many Nurse Practitioner providers are there in the US?
There are 87,227 Nurse Practitioner providers across 56 states in the US. The average Nurse Practitioner provider writes 1,084 Medicare Part D claims per year.
What drugs does HOLLY ANTONYAN, N.P. prescribe most often?
Based on 2023 Medicare Part D data, HOLLY ANTONYAN, N.P.'s most frequently prescribed drugs include Triamcinolone Acetonide, Clobetasol Propionate, Ketoconazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HOLLY ANTONYAN, N.P. accept Medicare?
HOLLY ANTONYAN, N.P. appears in CMS Medicare data with 582 Part D claims and 208 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HOLLY ANTONYAN, N.P.'s credentials?
HOLLY ANTONYAN, N.P.'s NPI is 1144500398 with credentials N.P.. 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