NPI registry status
Active
2026 NPPES data Surgical Assistant NPI 1336542869 MD
Verify on CMS → Carlos Nevarez Ontiveros, MD
Surgical Assistant in Palm Springs, 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 4,527 in Surgical 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
20
Medicare Part D claims · Surgical Assistant avg: 936
Compiled from official public sources by the PlainDoctor editorial team.
What the federal data shows
Carlos Nevarez Ontiveros, MD filed 20 Medicare Part D claims in 2023 as a Surgical Assistant in Palm Springs, California.
- 20
- 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.
Carlos Nevarez Ontiveros, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
20 0th percentile higher than 0% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023
What does the federal data show about Carlos Nevarez Ontiveros, MD?
Quality data not reportedPrimary specialty
Surgical Assistant
Medicare Part D claims
20 98% vs specialty avg
Specialty distribution in California
How Surgical Assistant compares to other specialties among California providers
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Surgical Assistant. Verify directly:
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).
Carlos Nevarez Ontiveros, MD appears in the CMS NPPES registry as a Surgical Assistant provider holding MD credentials at 1150 N PALM CANYON DR, Palm Springs, CA, 92262, with a listed phone of (415) 623-4571. NPI 1336542869 was issued on 09/29/2014.
Medicare Part D records for calendar year 2023 show 20 prescription claims written by this provider, covering N/A Medicare beneficiaries and totaling roughly $2K in drug spend.
Surgical Assistant is a narrow specialty nationwide, with 4,527 enrolled providers across 52 states and an average of 936 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 | 1336542869 |
|---|---|
| Specialty | Surgical Assistant |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 09/29/2014 |
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 Carlos Nevarez Ontiveros, MD. To verify Carlos Nevarez Ontiveros, MD'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.
20
Total Claims
$2K
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 21
- Total Day Supply
- 431
- Generic Drug Cost
- $54
Patient Demographics
- Average Patient Age
- 73.4 years
- Avg HCC Risk Score
- 1.61
Surgical Assistant Overview
How Carlos Nevarez Ontiveros, MD fits within the Surgical Assistant landscape nationally.
4,527
Surgical Assistant Providers in US
52
States with Surgical Assistant
936
Avg Claims per Provider
Carlos Nevarez Ontiveros, MD's 20 claims are below the specialty average of 936.
Nearby Surgical Assistant Providers in California
Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as Nevarez Ontiveros.
Dr. Ziyad Alguraan
SA-C
Anaheim, CA
Elias Aljamal
La Verne, CA
Majd Alnosser
Anaheim, CA
Dr. Emerson Amaya
SA-C
Los Angeles, CA
Dr. Felix Argueta Carpio
SA-C
Huntington Park, CA
Compare Surgical 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 Surgical 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.
Healthcare Guides
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How to Find a Doctor
Step-by-step guide to choosing a provider
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Medical Specialties Explained
Who treats what and how specialties differ
Understanding Medicare Claims Data
What prescribing data reveals about a provider
In-Network vs Out-of-Network
How insurance networks affect your costs
Telehealth Guide
Virtual care options and coverage in 2026
Explore California
Frequently Asked Questions
What is Carlos Nevarez Ontiveros, MD's specialty? ▼
Carlos Nevarez Ontiveros, MD specializes in Surgical Assistant and practices in Palm Springs, California. Credentials: MD.
How much does Carlos Nevarez Ontiveros, MD prescribe under Medicare Part D? ▼
In 2023, Carlos Nevarez Ontiveros, MD wrote 20 Medicare Part D claims totaling $2K in drug costs for N/A beneficiaries.
Where is Carlos Nevarez Ontiveros, MD located? ▼
Carlos Nevarez Ontiveros, MD is located at 1150 N PALM CANYON DR, Palm Springs, CA, 92262. Phone: (415) 623-4571.
What is Carlos Nevarez Ontiveros, MD's NPI number? ▼
Carlos Nevarez Ontiveros, MD's National Provider Identifier (NPI) is 1336542869, issued on 09/29/2014.
How many Surgical Assistant providers are there in the US? ▼
There are 4,527 Surgical Assistant providers across 52 states in the US. The average Surgical Assistant provider writes 936 Medicare Part D claims per year.
Does Carlos Nevarez Ontiveros, MD accept Medicare? ▼
Carlos Nevarez Ontiveros, MD appears in CMS Medicare data with 20 Part D claims and N/A Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Carlos Nevarez Ontiveros, MD's credentials? ▼
Carlos Nevarez Ontiveros, MD's NPI is 1336542869 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.
- 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.