Larry D. Deffenbaugh, D.O.
Gastroenterology Physician · Carthage, MO
Larry D. Deffenbaugh, D.O. is a gastroenterology physician with a practice address in Carthage, Missouri, and NPI 1447290622, issued on Jun 7, 2006. Check the license (Missouri R6321, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.
- Name
- Larry D. Deffenbaugh
- Credential
- D.O.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- R6321 MO
Self-reported in NPPES; status is on the state search - Practice location
- 3114 Medical Park Dr, Carthage, MO 64836
- Phone
- (620) 783-2430
- Enumerated
- Jun 7, 2006
- Record last updated
- Oct 13, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20100311000485); accepts Medicare assignment
- Medical or professional school
- University Of Kansas School Of Med (Kc/Wich/Sal), 1974
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 414 in Missouri → Look up another NPI →
Verify Larry D. Deffenbaugh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
Search for license R6321Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
89% fewer Medicare Part D claims than the average gastroenterology physician in 2024
93 Medicare Part D claims for 78 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Peg-3350 And Electrolytes31 claims
- Gavilyte-G27 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.
Bills Medicare through one group practice
- Mercy Clinic Joplin LLCCarthage, MO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Larry D. Deffenbaugh among 414 gastroenterology physician records in Missouri
Larry D. Deffenbaugh, D.O. is one of 414 gastroenterology physician records with a practice address in Missouri. 84% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 47% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated1974 · median 2003 among the 303 with a school on file
- Record last updated2021 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Missouri
There are 414 gastroenterology physician records in Missouri.
All 414 in Missouri → Every provider in Carthage → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Sudhakar Ancha, M.D.Joplin, MO 648041346395852
- Geoffrey Graham, DOJoplin, MO 648041003041625
- Muhammad Hussain, MDJoplin, MO 648041568943793
- Charbel Maksoud, M.D.Joplin, MO 648041285845339
- Rangan Murali, M.D.Joplin, MO 648041164687224
- David Seidl, MDJoplin, MO 648041578509527
- Xujun Wu, MDJoplin, MO 648041235117425
- Kevin Byrne, D.O.Osage Beach, MO 650651326020082
Common questions
What is Larry D. Deffenbaugh, D.O.'s NPI number?
Larry D. Deffenbaugh, D.O.'s National Provider Identifier (NPI) is 1447290622, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Larry D. Deffenbaugh, D.O. located?
The NPPES record lists a practice address at 3114 Medical Park Dr, Carthage, MO, 64836. Phone: (620) 783-2430. Providers update this record themselves, so call before visiting.
How can I verify Larry D. Deffenbaugh, D.O.'s license?
NPPES lists Missouri license number R6321, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Larry D. Deffenbaugh, D.O. prescribe under Medicare Part D?
In 2024, Larry D. Deffenbaugh, D.O. had 93 Medicare Part D claims for 78 beneficiaries; the average among gastroenterology physician prescribers was 811. 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.