Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Larry D Deffenbaugh, DO

Individual provider Gastroenterology Physician · NPI 1447290622

Dr. Larry D Deffenbaugh, DO practises Gastroenterology in Carthage, Missouri. Graduated from University of Kansas School of Med (KC/WICH/SAL) in 1974, 52 years ago. Practices with Mercy Clinic Joplin LLC, a 295-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
52
Trained at
University of Kansas School of Med (KC/WICH/SAL)
Licensed in
MO
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

3114 Medical Park Dr
Carthage, MO 64836-1211
Phone: (620) 783-2430
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 198 Four States Dr, Galena, KS 66739-4305 — (417) 782-4701

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence R6321 (MO)

Record details

NPI number1447290622
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedJune 7, 2006
Last updated in NPPESOctober 13, 2021
Certification dateOctober 13, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolUNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated 1974 (52 years in practice)
Group practice Mercy Clinic Joplin Llc — 295 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Colonoscopy 44 times · 61st percentile

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients66
Services billed 72 a service is one billed item, such as a visit, a test or a procedure
Average patient age72

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Mercy Clinic Joplin LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 295 clinicians in the practice; 12 are shown here.