NPI registry status
Active
2026 NPPES data Occupational Medicine Physician NPI 1710097357 MD
Verify on CMS → Leonard Larson, MD
Occupational Medicine Physician in Kansas City, Kansas.
This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 2,244 in Occupational Medicine 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.
Prescribing volume
45
Medicare Part D claims · Occupational Medicine Physician avg: 587
Source: CMS Medicare Part D Prescriber Public Use File, 2024
What the federal data shows
Leonard Larson, MD filed 45 Medicare Part D claims in 2024 as an Occupational Medicine Physician in Kansas City, Kansas.
- 45
- Part D claims, 2024
- ≥0th
- pct by Part D claim volume (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.
Federal trust snapshot
What official records show about Leonard Larson, MD
Federal records show an active NPI with Medicare Part D prescribing activity — verifiable registry data, not a proprietary rating.
- Verified
NPI registry status
Active listing in the CMS National Provider Identifier Registry (NPI 1710097357), first enumerated 08/30/2006.
Source: CMS NPPES
- Reported
Medicare Part D participation
Filed 45 Medicare Part D prescription claims in the 2023 CMS public use file — indicates active Medicare prescribing participation.
Source: CMS Part D Prescriber PUF
- Reported
Board certification signal
Practices in an ABMS-board-eligible specialty; board certification not confirmed in federal records.
- Not in federal data
Individual sanction lookup
PlainDoctor does not publish per-provider disciplinary determinations. Confirm current license and any individual actions through the state medical board or FSMB verification service.
Source: State medical board / FSMB
This trust snapshot summarizes only what appears in federal CMS/NPPES public records. It is not a composite score, star rating, patient review, or clinical recommendation. PlainDoctor never fabricates reviews or AggregateRating schema.
CMS NPPES provider registry desk
NPI 1710097357 · Occupational Medicine Physician
NPI-10 · ENUM-LEGACY · TAX-NARROW · RX-TRACE · BOOK-THIN · PHOTO-ENUM
- NPI-10 1710097357
- ENUM-LEGACY 2006
- TAX-NARROW 2,244
- RX-TRACE 45
- BOOK-THIN 22 in Kansas
- PHOTO-ENUM Jeffrey Gao · 2006
Leonard Larson, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2024, across all CMS prescribers nationally
45 ≥ 0th percentile 0% of 1,416,883 prescribers are in lower value bands
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.
The percentile is a conservative 100-claim band: it counts only prescribers in lower claim-volume bands. Medicare Part D claim volume is activity context, not a quality measure or recommendation. See methodology § corpus placement.
Source CMS Medicare Part D Prescriber Public Use File · 2024
◑
Board-eligible specialty (heuristic, not verified)
Leonard 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).
What does the federal data show about Leonard Larson, MD?
Quality data not reportedPrimary specialty
Occupational Medicine Physician
Medicare Part D claims
45 92% vs specialty avg
Specialty distribution in Kansas
How Occupational Medicine Physician compares to other specialties among Kansas 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 Occupational Medicine Physician. 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).
Practice Address
Provider Details
| NPI | 1710097357 |
|---|---|
| Specialty | Occupational Medicine Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 08/30/2006 |
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2024.
45
Total Claims
$758
Total Drug Cost
N/A
Medicare Beneficiaries
Prescribing Breakdown
- 30-Day Fills
- 86.4
- Total Day Supply
- 2,567
- Brand Drug Cost
- $0
- Generic Drug Cost
- $758
Patient Demographics
- Average Patient Age
- 70.0 years
- Avg HCC Risk Score
- 0.69
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2024. Based on Medicare Part D data only.
| Drug | Claims |
|---|---|
| Progesterone Progesterone, Micronized | 24 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Occupational Medicine Physician Overview
How Leonard Larson, MD fits within the Occupational Medicine Physician landscape nationally.
2,244
Occupational Medicine Physician Providers in US
52
States with Occupational Medicine Physician
587
Avg Claims per Provider
Leonard Larson, MD's 45 claims are below the specialty average of 587.
Nationwide Occupational Medicine Physician peers with similar MIPS or enrollment year
Two federal-record peer sets for Larson, both outside Kansas so the neighborhoods are not geographic containment.
Same NPPES enumeration year (2006)
Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.
Nearby Occupational Medicine Physician Providers in Kansas
Other clinicians with the same primary specialty enrolled in Kansas, drawn from the same CMS NPPES roster as Larson.
One of 22 Occupational Medicine Physician providers enrolled in Kansas, 5 are shown here.
Dr. Craig Anderson
D.O.
Wichita, KS
Dr. Clay Baldwin
D.O.
Fort Leavenworth, KS
Dr. Gregory Buhler
D.O.
Overland Park, KS
Dr. Randall Craig
MD
Wichita, KS
Dr. Ronald Davis
MD
Wichita, KS
Compare Occupational Medicine Physician nationally: see state-by-state distribution →
Frequently Asked Questions
What is Leonard Larson, MD's specialty? ▼
Leonard Larson, MD specializes in Occupational Medicine Physician and practices in Kansas City, Kansas. Credentials: MD.
How much does Leonard Larson, MD prescribe under Medicare Part D? ▼
In 2024, Leonard Larson, MD wrote 45 Medicare Part D claims totaling $758 in drug costs for N/A beneficiaries.
Where is Leonard Larson, MD located? ▼
Leonard Larson, MD is located at 4810 STATE AVE, Kansas City, KS, 66102. Phone: (913) 321-4567.
What is Leonard Larson, MD's NPI number? ▼
Leonard Larson, MD's National Provider Identifier (NPI) is 1710097357, issued on 08/30/2006.
How many Occupational Medicine Physician providers are there in the US? ▼
There are 2,244 Occupational Medicine Physician providers across 52 states in the US. The average Occupational Medicine Physician provider writes 587 Medicare Part D claims per year.
What drugs does Leonard Larson, MD prescribe most often? ▼
Based on 2024 Medicare Part D data, Leonard Larson, MD's most frequently prescribed drugs include Progesterone. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Leonard Larson, MD accept Medicare? ▼
Leonard Larson, MD appears in CMS Medicare data with 45 Part D claims and N/A Medicare beneficiaries in 2024. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Leonard Larson, MD's credentials? ▼
Leonard Larson, MD's NPI is 1710097357 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 (2024). 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 August 2026 (NPPES) / 2024 (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 August 2026.