NPI registry status
Active
2026 NPPES data Student in an Organized Health Care Education/Training Program NPI 1164059226 MD
Verify on CMS → Alexander Castillo, MD
Student in an Organized Health Care Education/Training Program in Henderson, Nevada.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 331,274 in Student in an Organized Health Care Education/Training Program, 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
136
Medicare Part D claims · 52 beneficiaries · Student in an Organized Health Care Education/Training Program avg: 459
MIPS score
58.9/100
▼ 25 pts below national avg 83.5 · Mid-tier
Industry payments
$624.55
18 payments · CMS Open Payments (Sunshine Act)
What the federal data shows
Alexander Castillo, MD reported a CMS MIPS final score of 58.9/100 - below the 83.5 national average - and filed 136 Medicare Part D claims in 2023.
- 58.9/100
- MIPS score · -25 vs avg
- 136
- Part D claims, 2023
- $624.55
- industry payments (Sunshine Act)
- ≥5th
- 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.
Alexander Castillo, MD'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.
59 ≥ 5th percentile 5% 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 Alexander Castillo, MD sits
This provider among student in an organized health care education/training program peers
Across the 12,177 student in an organized health care education/training program providers who report both Medicare Part D prescribing and a MIPS quality score, Alexander Castillo, MD writes more Part D claims than 33% of them and scores higher on MIPS quality than 3% - 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 student in an organized health care education/training program peer from a representative sample of 60; the gold marker is Alexander Castillo, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Alexander Castillo, MD?
Below national averagePrimary specialty
Student in an Organized Health Care Education/Training Program
Medicare Part D claims
136 70% vs specialty avg
MIPS final score
58.9/100 24.6 pts vs avg
Specialty distribution in Nevada
How Student in an Organized Health Care Education/Training Program compares to other specialties among Nevada providers
Medicare quality performance, MIPS
Alexander Castillo, MD's 2023 MIPS final score plotted against the Student in an Organized Health Care Education/Training Program national average
- MIPS Final Score
- 58.9/100
- vs 83.5 national avg · 2023 performance year
MIPS final score (Student in an Organized Health Care Education/Training Program) - 58.9/100 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).
Alexander Castillo, MD appears in the CMS NPPES registry as a Student in an Organized Health Care Education/Training Program provider holding MD credentials at 10624 S EASTERN AVE # A955, Henderson, NV, 89052, with a listed phone of (702) 800-5393. NPI 1164059226 was issued on 03/26/2020.
Medicare Part D records for calendar year 2023 show 136 prescription claims written by this provider, covering 52 Medicare beneficiaries and totaling roughly $38K in drug spend. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 58.9/100 for the 2023 performance year (Quality 39.4, Cost 49.5), compared with the 83.5 average among clinicians with a measured score.
Student in an Organized Health Care Education/Training Program is a high-volume specialty nationwide, with 331,274 enrolled providers across 55 states and an average of 459 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 | 1164059226 |
|---|---|
| Specialty | Student in an Organized Health Care Education/Training Program |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/26/2020 |
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
58.8529
Final Score
Measured-score avg: 83.5
39.4082
Quality
49.4521
Cost
Reporting: Group practice
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 Alexander Castillo, MD. Source: openpaymentsdata.cms.gov.
Total received
$625
Largest payer
Bayer Healthcare Pharmaceuticals 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.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
136
Total Claims
$38K
Total Drug Cost
52
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 171
- Total Day Supply
- 4,186
- Generic Drug Cost
- $11K
- Antibiotic Claims
- 22
Patient Demographics
- Average Patient Age
- 70.0 years
- Avg HCC Risk Score
- 2.57
- Gender Split
- 56% female / 44% male
More Student in an Organized Health Care Education/Training Program in NV →
All providers in Nevada →
Compare specialties →
Student in an Organized Health Care Education/Training Program Overview
How Alexander Castillo, MD fits within the Student in an Organized Health Care Education/Training Program landscape nationally.
331,274
Student in an Organized Health Care Education/Training Program Providers in US
55
States with Student in an Organized Health Care Education/Training Program
459
Avg Claims per Provider
Alexander Castillo, MD's 136 claims are below the specialty average of 459.
Nearby Student in an Organized Health Care Education/Training Program Providers in Nevada
Other clinicians with the same primary specialty enrolled in Nevada, drawn from the same CMS NPPES roster as Castillo.
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 Nevada medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Student in an Organized Health Care Education/Training Program 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 Alexander Castillo, MD's specialty? ▼
Alexander Castillo, MD specializes in Student in an Organized Health Care Education/Training Program and practices in Henderson, Nevada. Credentials: MD.
How much does Alexander Castillo, MD prescribe under Medicare Part D? ▼
In 2023, Alexander Castillo, MD wrote 136 Medicare Part D claims totaling $38K in drug costs for 52 beneficiaries.
What is Alexander Castillo, MD's Medicare quality score? ▼
Alexander Castillo, MD has a CMS MIPS Final Score of 58.9/100 (Quality: 39.4, Cost: 49.5). 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 Alexander Castillo, MD located? ▼
Alexander Castillo, MD is located at 10624 S EASTERN AVE # A955, Henderson, NV, 89052. Phone: (702) 800-5393.
What is Alexander Castillo, MD's NPI number? ▼
Alexander Castillo, MD's National Provider Identifier (NPI) is 1164059226, issued on 03/26/2020.
How many Student in an Organized Health Care Education/Training Program providers are there in the US? ▼
There are 331,274 Student in an Organized Health Care Education/Training Program providers across 55 states in the US. The average Student in an Organized Health Care Education/Training Program provider writes 459 Medicare Part D claims per year.
Does Alexander Castillo, MD accept Medicare? ▼
Alexander Castillo, MD appears in CMS Medicare data with 136 Part D claims and 52 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Alexander Castillo, MD's credentials? ▼
Alexander Castillo, MD's NPI is 1164059226 with credentials MD. 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.