Leonard John Larson, MD
Occupational Medicine Physician · Kansas City, KS
Leonard John Larson, MD is an occupational medicine physician with a practice address in Kansas City, Kansas, and NPI 1710097357, issued on Aug 30, 2006. Check the license (Kansas 04-3170, as entered in NPPES) on the Kansas State Board of Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Leonard John Larson
- Credential
- MD
- Primary taxonomy
- Occupational Medicine Physician 2083X0100X
- License number
- 04-3170 KS
Self-reported in NPPES; status is on the state search - Practice location
- 4810 State Ave, Kansas City, KS 66102
- Phone
- (913) 321-4567
- Enumerated
- Aug 30, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (913) 321-6789
- Entity
- Type 1 · individual
8 nearest occupational medicine physician records → All 18 in Kansas → Look up another NPI →
Also registered at 4810 State Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Leonard John Larson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKansas State Board of Healing Arts
Search for license 04-3170Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
94% fewer Medicare Part D claims than the average occupational medicine physician in 2024
45 Medicare Part D claims, against an average of 794 among the 463 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Progesterone24 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Leonard John Larson among 18 occupational medicine physician records in Kansas
Leonard John Larson, MD is one of 18 occupational medicine physician records with a practice address in Kansas. 50% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 0% of them.
- NPI issued2006 · 0% of these records are older, 61% newer
- In a Medicare fileYes · 50% of these records are
- In the CMS Doctors and Clinicians fileNo · 22% of these records are
- Record last updated2007 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2083X0100X and a Kansas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Occupational Medicine Physician providers in Kansas
There are 18 occupational medicine physician records in Kansas.
All 18 in Kansas → Every provider in Kansas City → Occupational Medicine Physician nationwide →
The 8 occupational medicine physician records with the nearest ZIP codes
- Temesgen Wakwaya, D.O.Kansas City, KS 661061871619916
- Robert Gollier, M.D.Ottawa, KS 660671689634446
- Ramon Nichols, M.D.Leavenworth, KS 660481619088879
- Jolene Mitchell, D.O.Kansas City, KS 661601215299292
- Jessica Mullins, D.O.Kansas City, KS 661601043652514
- Clay Baldwin, D.O.Fort Leavenworth, KS 660271063573384
- Michael Poppa, D.O.Mission, KS 662021528424637
- Valerie Finley, OTR/LMerriam, KS 662041447508197
Common questions
What is Leonard John Larson, MD's NPI number?
Leonard John Larson, MD's National Provider Identifier (NPI) is 1710097357, issued on Aug 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Leonard John Larson, MD located?
The NPPES record lists a practice address at 4810 State Ave, Kansas City, KS, 66102. Phone: (913) 321-4567. Providers update this record themselves, so call before visiting.
How can I verify Leonard John Larson, MD's license?
NPPES lists Kansas license number 04-3170, as entered by the provider. Search the Kansas State Board of Healing Arts at https://www.ksbha.ks.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Leonard John Larson, MD prescribe under Medicare Part D?
In 2024, Leonard John Larson, MD had 45 Medicare Part D claims; the average among occupational medicine physician prescribers was 794. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.