NPI registry status
Active
2026 NPPES data Medical-Surgical Registered Nurse NPI 1619642634 AGPCNP-BC
Verify on CMS → Alyssa Maskell, AGPCNP-BC
Medical-Surgical Registered Nurse in Los Angeles, 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 3,543 in Medical-Surgical 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
265
Medicare Part D claims · 48 beneficiaries · Medical-Surgical Registered Nurse avg: 798
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
87.7/100
▲ 4 pts above national avg 83.5 · Above neutral
Industry payments
$672.63
8 payments · CMS Open Payments (Sunshine Act)
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Alyssa Maskell, AGPCNP-BC reported a CMS MIPS final score of 87.7/100 - above the 83.5 national average - and filed 265 Medicare Part D claims in 2023.
- 87.7/100
- MIPS score · +4 vs avg
- 265
- Part D claims, 2023
- 87%
- generic prescribing
- $672.63
- industry payments (Sunshine Act)
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.
Alyssa Maskell, AGPCNP-BC'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.
88 ≥ 52nd percentile 52% of 454,083 measured providers are in lower value bands
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 Alyssa Maskell, AGPCNP-BC sits
This provider among medical-surgical registered nurse peers
Across the 91 medical-surgical registered nurse providers who report both Medicare Part D prescribing and a MIPS quality score, Alyssa Maskell, AGPCNP-BC writes more Part D claims than 38% of them and scores higher on MIPS quality than 57% - placing this provider in the lower-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one medical-surgical registered nurse peer from a representative sample of 60; the gold marker is Alyssa Maskell, AGPCNP-BC. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Alyssa Maskell, AGPCNP-BC?
High performer (top quartile)Primary specialty
Medical-Surgical Registered Nurse
Medicare Part D claims
265 67% vs specialty avg
MIPS final score
87.7/100 4.2 pts vs avg
Specialty distribution in California
How Medical-Surgical Registered Nurse compares to other specialties among California providers
Medicare quality performance, MIPS
Alyssa Maskell, AGPCNP-BC's 2023 MIPS final score plotted against the Medical-Surgical Registered Nurse national average
- MIPS Final Score
- 87.7/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Medical-Surgical Registered Nurse) - 87.7/100 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).
Alyssa Maskell, AGPCNP-BC appears in the CMS NPPES registry as a Medical-Surgical Registered Nurse provider holding AGPCNP-BC credentials at 127 S SAN VICENTE BLVD, Los Angeles, CA, 90048, with a listed phone of (310) 423-1160. NPI 1619642634 was issued on 08/11/2021.
Medicare Part D records for calendar year 2023 show 265 prescription claims written by this provider, covering 48 Medicare beneficiaries and totaling roughly $208K in drug spend, split 13% brand-name and 87% generic by claim count. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.7/100 for the 2023 performance year (Quality 80.9, Cost 49.4), compared with the 83.5 average among clinicians with a measured score.
Medical-Surgical Registered Nurse is a narrow specialty nationwide, with 3,543 enrolled providers across 54 states and an average of 798 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
Provider Details
| NPI | 1619642634 |
|---|---|
| Specialty | Medical-Surgical Registered Nurse |
| Credentials | AGPCNP-BC |
| Gender | Female |
| NPI Issued | 08/11/2021 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
87.6775
Final Score
Measured-score avg: 83.5
80.8666
Quality
49.4287
Cost
99
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Alyssa Maskell, AGPCNP-BC 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 Center
★★★★★ 5/5
West Hollywood, CA
Acute Care Hospitals
CMS CCN: 050625
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 Alyssa Maskell, AGPCNP-BC. Source: openpaymentsdata.cms.gov.
Total received
$673
Largest payer
ABBVIE 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 Alyssa Maskell, AGPCNP-BC. To verify Alyssa Maskell, AGPCNP-BC'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
Alyssa Maskell, AGPCNP-BC - brand share 13.0%
Medical-Surgical Registered Nurse average
13% brand-name claims vs 87% generic, on 265 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.
265
Total Claims
$208K
Total Drug Cost
48
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 315
- Total Day Supply
- 7,950
- Brand vs Generic
- 13% brand / 87% generic
- Brand Drug Cost
- $171K
- Generic Drug Cost
- $36K
- Antibiotic Claims
- 29
Patient Demographics
- Average Patient Age
- 71.2 years
- Avg HCC Risk Score
- 3.51
- Gender Split
- 56% female / 44% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Alyssa Maskell, AGPCNP-BC prescribes most
Top Medicare Part D drugs by claim count, 2023
- Acyclovir
Acyclovir
30 claims
- Valacyclovir
Valacyclovir
22 claims
- Sulfamethoxazole-T…
Sulfamethoxazole-Trimethoprim
17 claims
- Posaconazole
Posaconazole
12 claims
| Drug | Claims |
|---|---|
| Acyclovir | 30 |
| Valacyclovir Valacyclovir Hcl | 22 |
| Sulfamethoxazole-Trimethoprim Sulfamethoxazole/Trimethoprim | 17 |
| Posaconazole | 12 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical-Surgical Registered Nurse Overview
How Alyssa Maskell, AGPCNP-BC fits within the Medical-Surgical Registered Nurse landscape nationally.
3,543
Medical-Surgical Registered Nurse Providers in US
54
States with Medical-Surgical Registered Nurse
798
Avg Claims per Provider
Alyssa Maskell, AGPCNP-BC's 265 claims are below the specialty average of 798.
Nearby Medical-Surgical Registered Nurse Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Maskell.
Yolande Abotchi
Mountain View, CA
Chinyere Achu
Moreno Valley, CA
Autumn Achugbu
Moreno Valley, CA
Dr. Cynthia Adams
RN
Sacramento, CA
Vida Adaro
Los Angeles, CA
Compare Medical-Surgical Registered Nurse 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical-Surgical Registered Nurse 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.
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Frequently Asked Questions
What is Alyssa Maskell, AGPCNP-BC's specialty? ▼
Alyssa Maskell, AGPCNP-BC specializes in Medical-Surgical Registered Nurse and practices in Los Angeles, California. Credentials: AGPCNP-BC.
How much does Alyssa Maskell, AGPCNP-BC prescribe under Medicare Part D? ▼
In 2023, Alyssa Maskell, AGPCNP-BC wrote 265 Medicare Part D claims totaling $208K in drug costs for 48 beneficiaries.
What is Alyssa Maskell, AGPCNP-BC's Medicare quality score? ▼
Alyssa Maskell, AGPCNP-BC has a CMS MIPS Final Score of 87.7/100 (Quality: 80.9, Cost: 49.4). 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 Alyssa Maskell, AGPCNP-BC located? ▼
Alyssa Maskell, AGPCNP-BC is located at 127 S SAN VICENTE BLVD, Los Angeles, CA, 90048. Phone: (310) 423-1160.
What is Alyssa Maskell, AGPCNP-BC's NPI number? ▼
Alyssa Maskell, AGPCNP-BC's National Provider Identifier (NPI) is 1619642634, issued on 08/11/2021.
Does Alyssa Maskell, AGPCNP-BC prescribe more brand-name or generic drugs? ▼
Alyssa Maskell, AGPCNP-BC's prescribing is 13% brand-name and 87% generic drugs by claim count, with $171K in brand drug costs.
How many Medical-Surgical Registered Nurse providers are there in the US? ▼
There are 3,543 Medical-Surgical Registered Nurse providers across 54 states in the US. The average Medical-Surgical Registered Nurse provider writes 798 Medicare Part D claims per year.
What drugs does Alyssa Maskell, AGPCNP-BC prescribe most often? ▼
Based on 2023 Medicare Part D data, Alyssa Maskell, AGPCNP-BC's most frequently prescribed drugs include Acyclovir, Valacyclovir, Sulfamethoxazole-Trimethoprim. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Alyssa Maskell, AGPCNP-BC accept Medicare? ▼
Alyssa Maskell, AGPCNP-BC appears in CMS Medicare data with 265 Part D claims and 48 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alyssa Maskell, AGPCNP-BC's credentials? ▼
Alyssa Maskell, AGPCNP-BC's NPI is 1619642634 with credentials AGPCNP-BC. 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 (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
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 May 2026.