2026 NPPES data Neurology Physician NPI 1255302352 MD
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Seth Larson, MD

Neurology Physician in Sun City, Arizona. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 19,866 in Neurology Physician, 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.
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Seth Larson, MD is a Neurology Physician in Sun City, Arizona, listed in the federal CMS National Provider Identifier registry.

Likely
board-certified (heuristic)

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.

Board certification likely (heuristic, not verified)

Seth Larson, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about Seth Larson, MD?

Quality data not reported

NPI registry status

Active

Issued 01/28/2006

NPI 1255302352

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Specialty distribution in Arizona

How Neurology Physician compares to other specialties among Arizona providers

Arizona providers

Largest specialties in Arizona (% of in-state providers)

Pharmacist - 5.6%Pharmacist5.6%Behavior Technician - 5.6%Behavior Technician5.6%Family Nurse Practitioner - 4.3%Family Nurse Practitioner4.3%Physical Therapist - 4.2%Physical Therapist4.2%Speech-Language Pathologist - 3.5%Speech-Language Pathologist3.5%Student in an Organized Health Care Education/Training Program - 3.5%Student in an Organized Health Care Education/Training Program3.5%Neurology Physician - 0.3%Neurology Physician0.3%
Largest specialties in Arizona (% of in-state 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 Neurology Physician. Verify directly:

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).

Seth Larson, MD appears in the CMS NPPES registry as a Neurology Physician provider holding MD credentials at 10474 W THUNDERBIRD BLVD, Sun City, AZ, 85351, with a listed phone of (623) 972-3800. NPI 1255302352 was issued on 01/28/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Larson 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 prescribing data is not currently published for this NPI, which typically means the provider either wrote fewer than 11 Part D claims in the most recent reporting year, does not participate in Medicare, or practices in a specialty that rarely prescribes outpatient drugs. Absence of prescribing data is not a quality signal, many Neurology Physician providers operate outside Part D entirely.

Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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

10474 W THUNDERBIRD BLVD
Sun City, AZ 85351

Provider Details

NPI 1255302352
Specialty Neurology Physician
Credentials MD
Gender Male
NPI Issued 01/28/2006

Hospital and facility affiliations

Facilities where Seth Larson, MD 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.

Catawba Valley Medical Center
★★☆☆☆ 2/5
Hickory, NC
Acute Care Hospitals
CMS CCN: 340143
Catawba Valley Medical Group Inc
Hickory, NC

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Neurology Physician Overview

How Seth Larson, MD fits within the Neurology Physician landscape nationally.

19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider

Nearby Neurology Physician Providers in Arizona

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

Compare Neurology Physician 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 Arizona medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Neurology Physician 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.

Frequently Asked Questions

What is Seth Larson, MD's specialty?
Seth Larson, MD specializes in Neurology Physician and practices in Sun City, Arizona. Credentials: MD.
Where is Seth Larson, MD located?
Seth Larson, MD is located at 10474 W THUNDERBIRD BLVD, Sun City, AZ, 85351. Phone: (623) 972-3800.
What is Seth Larson, MD's NPI number?
Seth Larson, MD's National Provider Identifier (NPI) is 1255302352, issued on 01/28/2006.
How many Neurology Physician providers are there in the US?
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
Does Seth Larson, MD accept Medicare?
Seth Larson, MD appears in CMS Medicare data. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Seth Larson, MD's credentials?
Seth Larson, MD's NPI is 1255302352 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

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.
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.