2026 NPPES data Radiation Oncology Physician NPI 1861498370 MD
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BRIAN LARSON, MD

Radiation Oncology Physician in HOMEWOOD, Alabama. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
232
Medicare Part D claims · 76 beneficiaries · Radiation Oncology Physician avg: 186
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$99.94
4 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: BRIAN LARSON, MD is a Radiation Oncology Physician ([object Object]) practicing in HOMEWOOD, Alabama with a Medicare Part D prescribing footprint of 232 claims across 76 beneficiaries — 38% brand-name prescribing . Industry payments of $99.94 across 4 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: BRIAN LARSON, MD filed 232 Medicare Part D claims in 2023 across HOMEWOOD, Alabama. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

BRIAN LARSON, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

BRIAN LARSON, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/21/2005

NPI 1861498370

Primary specialty

Radiation Oncology Physician

Mid-sized

6,018 US NPIs in this specialty

Medicare Part D claims

232 25% vs specialty avg

2023 prescription claims

Specialty avg: 186

Specialty distribution in Alabama

How Radiation Oncology Physician compares to other specialties among Alabama providers

Alabama providers

Radiation Oncology Physician share within Alabama

1. Radiation Oncology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Radiation Oncology Physician share within Alabama

Specialty board-certification context

Estimated specialty board-certified rate — Radiation Oncology Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Radiation Oncology Physician ABMS/AOA estimate

Est. board-certified rate (Radiation Oncology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Radiation Oncology Physician) — ABMS / AOA estimate

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).

BRIAN LARSON, MD is a Radiation Oncology Physician provider practicing in HOMEWOOD, Alabama, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1861498370. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

BRIAN LARSON, MD appears in the CMS NPPES registry as a Radiation Oncology Physician provider holding MD credentials at 3485 INDEPENDENCE DR, HOMEWOOD, AL, 35209, with a listed phone of (205) 414-4402. NPI 1861498370 was issued on 06/21/2005. 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 records for calendar year 2023 show 232 prescription claims written by this provider, covering 76 Medicare beneficiaries and totaling roughly $235K in drug spend, split 38% brand-name and 62% generic by claim count, with an opioid prescribing rate of 4.7%. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Radiation Oncology Physician is a mid-sized specialty nationwide, with 6,018 enrolled providers across 52 states and an average of 186 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

3485 INDEPENDENCE DR
HOMEWOOD, AL 35209

Provider Details

NPI 1861498370
Specialty Radiation Oncology Physician
Credentials MD
Gender Male
NPI Issued 06/21/2005

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 BRIAN LARSON, MD. Source: openpaymentsdata.cms.gov.

Total received

$100

Largest payer

Tempus AI, 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.

Brand vs generic prescribing mix · Above average

BRIAN LARSON, MD — brand share 38.0%
Specialty average (est.)

38% brand-name claims vs 62% generic, on 232 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.

232
Total Claims
$235K
Total Drug Cost
76
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
297
Total Day Supply
8,333
Brand vs Generic
38% brand / 62% generic
Brand Drug Cost
$233K
Generic Drug Cost
$2K
Opioid Claims
11 (4.7% rate)

Patient Demographics

Average Patient Age
72.8 years
Avg HCC Risk Score
1.08

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Tamsulosin Hcl
119
Orgovyx
Relugolix
86

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Radiation Oncology Physician Overview

How BRIAN LARSON, MD fits within the Radiation Oncology Physician landscape nationally.

6,018
Radiation Oncology Physician Providers in US
52
States with Radiation Oncology Physician
186
Avg Claims per Provider

BRIAN LARSON, MD's 232 claims are above the specialty average of 186.

Nearby Radiation Oncology Physician Providers in Alabama

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

Compare Radiation Oncology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is BRIAN LARSON, MD's specialty?
BRIAN LARSON, MD specializes in Radiation Oncology Physician and practices in HOMEWOOD, Alabama. Credentials: MD.
How much does BRIAN LARSON, MD prescribe under Medicare Part D?
In 2023, BRIAN LARSON, MD wrote 232 Medicare Part D claims totaling $235K in drug costs for 76 beneficiaries.
Where is BRIAN LARSON, MD located?
BRIAN LARSON, MD is located at 3485 INDEPENDENCE DR, HOMEWOOD, AL, 35209. Phone: (205) 414-4402.
What is BRIAN LARSON, MD's NPI number?
BRIAN LARSON, MD's National Provider Identifier (NPI) is 1861498370, issued on 06/21/2005.
Does BRIAN LARSON, MD prescribe more brand-name or generic drugs?
BRIAN LARSON, MD's prescribing is 38% brand-name and 62% generic drugs by claim count, with $233K in brand drug costs.
Does BRIAN LARSON, MD prescribe opioids?
Yes, BRIAN LARSON, MD had 11 opioid claims in 2023 with an opioid prescribing rate of 4.7%.
How many Radiation Oncology Physician providers are there in the US?
There are 6,018 Radiation Oncology Physician providers across 52 states in the US. The average Radiation Oncology Physician provider writes 186 Medicare Part D claims per year.
What drugs does BRIAN LARSON, MD prescribe most often?
Based on 2023 Medicare Part D data, BRIAN LARSON, MD's most frequently prescribed drugs include Tamsulosin Hcl, Orgovyx. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BRIAN LARSON, MD accept Medicare?
BRIAN LARSON, MD appears in CMS Medicare data with 232 Part D claims and 76 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BRIAN LARSON, MD's credentials?
BRIAN LARSON, MD's NPI is 1861498370 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.
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