NPI registry status
Active
2026 NPPES data Medical Physician Assistant NPI 1184248650
Verify on CMS → Hayden Leslie
Medical Physician Assistant in Colton, 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 40,580 in Medical 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
105
Medicare Part D claims · 44 beneficiaries · Medical Physician Assistant avg: 1K
MIPS score
67.8/100
▼ 15 pts below national avg 83.1 · Mid-tier
Source: CMS Medicare Part D Prescriber Public Use File, 2023
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Hayden Leslie reported a CMS MIPS final score of 67.8/100 - below the 83.1 national average - and filed 105 Medicare Part D claims in 2023.
- 67.8/100
- MIPS score · -15 vs avg
- 105
- 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.
Hayden Leslie's MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure
68 7th percentile higher than 7% of 477,587 scored providers
Each bar is a band; taller bars hold more scored 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.
Source CMS Merit-based Incentive Payment System (MIPS) · 2023
Where Hayden Leslie sits
This provider among medical physician assistant peers
Across the 7,339 medical physician assistant providers who report both Medicare Part D prescribing and a MIPS quality score, Hayden Leslie writes more Part D claims than 21% of them and scores higher on MIPS quality than 5% - placing this provider in the lower-volume, lower-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 physician assistant peer from a representative sample of 60; the gold marker is Hayden Leslie. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Hayden Leslie?
Below national averagePrimary specialty
Medical Physician Assistant
Medicare Part D claims
105 90% vs specialty avg
MIPS final score
67.8/100 15.3 pts vs avg
Specialty distribution in California
How Medical Physician Assistant compares to other specialties among California providers
Medicare quality performance, MIPS
Hayden Leslie's 2023 MIPS final score plotted against the Medical Physician Assistant national average
- MIPS Final Score
- 67.8/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Medical Physician Assistant) - 67.8/100 vs national avg 83.1
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).
Hayden Leslie appears in the CMS NPPES registry as a Medical Physician Assistant provider at 400 N PEPPER AVE, Colton, CA, 92324, with a listed phone of (909) 557-1600. NPI 1184248650 was issued on 06/01/2020.
Medicare Part D records for calendar year 2023 show 105 prescription claims written by this provider, covering 44 Medicare beneficiaries and totaling roughly $1K in drug spend, with an opioid prescribing rate of 36.2%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 67.8/100 for the 2023 performance year (Quality 20.7, Cost 91.3), compared with the national average of 83.1.
Medical Physician Assistant is a mid-sized specialty nationwide, with 40,580 enrolled providers across 55 states and an average of 1,077 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 | 1184248650 |
|---|---|
| Specialty | Medical Physician Assistant |
| Gender | Male |
| NPI Issued | 06/01/2020 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
67.8406
Final Score
Avg: 83.1
20.6657
Quality
91.309
Cost
52
Promoting Interoperability
Reporting: Group practice
Hospital and facility affiliations
Facilities where Hayden Leslie 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.
Southern California Permanente Medical Group
Riverside, 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 Hayden Leslie. To verify Hayden Leslie'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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
105
Total Claims
$1K
Total Drug Cost
44
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 105
- Total Day Supply
- 1,388
- Brand Drug Cost
- $0
- Generic Drug Cost
- $1K
- Opioid Claims
- 38 (36.2% rate)
Patient Demographics
- Average Patient Age
- 72.8 years
- Avg HCC Risk Score
- 0.89
- Gender Split
- 61% female / 39% male
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Hayden Leslie prescribes most
Top Medicare Part D drugs by claim count, 2023
- Oxycodone Hcl
Oxycodone Hcl
29 claims
- Meloxicam
Meloxicam
22 claims
- Naloxone Hcl 11
Naloxone Hcl
11 claims
| Drug | Claims |
|---|---|
| Oxycodone Hcl | 29 |
| Meloxicam | 22 |
| Naloxone Hcl | 11 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Medical Physician Assistant Overview
How Hayden Leslie fits within the Medical Physician Assistant landscape nationally.
40,580
Medical Physician Assistant Providers in US
55
States with Medical Physician Assistant
1,077
Avg Claims per Provider
Hayden Leslie's 105 claims are below the specialty average of 1,077.
Nearby Medical Physician Assistant Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Leslie.
Dr. Bridget Abajian
PA-C
Los Angeles, CA
Dr. Crispin Abbott
PHYSICIAN ASSISTANT
Thousand Oaks, CA
Dr. Abdol Hamid Abdali Hajiabadi
P.A.
Santa Ana, CA
Dr. Jilbert Abnoosian
PA
Lynwood, CA
Dr. Sakina Abowath
P.A.
Diamond Bar, CA
Compare Medical 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 California medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Medical 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.
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Frequently Asked Questions
What is Hayden Leslie's specialty? ▼
Hayden Leslie specializes in Medical Physician Assistant and practices in Colton, California.
How much does Hayden Leslie prescribe under Medicare Part D? ▼
In 2023, Hayden Leslie wrote 105 Medicare Part D claims totaling $1K in drug costs for 44 beneficiaries.
What is Hayden Leslie's Medicare quality score? ▼
Hayden Leslie has a CMS MIPS Final Score of 67.8/100 (Quality: 20.7, Cost: 91.3). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Hayden Leslie located? ▼
Hayden Leslie is located at 400 N PEPPER AVE, Colton, CA, 92324. Phone: (909) 557-1600.
What is Hayden Leslie's NPI number? ▼
Hayden Leslie's National Provider Identifier (NPI) is 1184248650, issued on 06/01/2020.
Does Hayden Leslie prescribe opioids? ▼
Yes, Hayden Leslie had 38 opioid claims in 2023 with an opioid prescribing rate of 36.2%.
How many Medical Physician Assistant providers are there in the US? ▼
There are 40,580 Medical Physician Assistant providers across 55 states in the US. The average Medical Physician Assistant provider writes 1,077 Medicare Part D claims per year.
What drugs does Hayden Leslie prescribe most often? ▼
Based on 2023 Medicare Part D data, Hayden Leslie's most frequently prescribed drugs include Oxycodone Hcl, Meloxicam, Naloxone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Hayden Leslie accept Medicare? ▼
Hayden Leslie appears in CMS Medicare data with 105 Part D claims and 44 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Hayden Leslie's credentials? ▼
Hayden Leslie's NPI is 1184248650. 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
Compiled from official public sources by the PlainDoctor editorial team.
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.