Dr. Ralph J. Duda JR., M.D.
Endocrinology & Diabetes (Endocrinology, Diabetes & Metabolism Physician)
At a glance
- In the NPI registry since
- 2006
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. NPIs were first issued in May 2005 and became required on claims in 2007–2008, so an early date usually means the clinician was already in practice before then. What an NPI is
Education and training
- 2006Registered with an NPI (national billing number; not a license date) — NPIs began in 2005, so practice likely started earlier
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Endocrinology, Diabetes & Metabolism Physician primary
MO license R7G82
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Payments from drug and device companies
In 2025, 4 companies reported 131 payments worth $77,300 in total to this clinician.
| Lilly USA, LLC | $72,898 |
|---|---|
| Eli Lilly and Company | $2,590 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | $1,705 |
| Novo Nordisk Inc | $107 |
| Compensation for services other than consulting (speaking, faculty) | $69,075 |
|---|---|
| Travel and Lodging | $6,725 |
| Food and Beverage | $1,500 |
What the payments were for
| Company | What it was for | Amount |
|---|---|---|
| Lilly USA, LLC Feb 28, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $3,600 |
| Lilly USA, LLC Apr 1, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Jun 9, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 18, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC May 7, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Sep 29, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Jul 1, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 25, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 14, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 22, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
All 94 payments other than meals, newest first
| Company | What it was for | Amount |
|---|---|---|
| Lilly USA, LLC Nov 25, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to LICKING, MO | $150 |
| Lilly USA, LLC Nov 17, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Nov 17, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC Oct 8, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to AVA, MO | $75.60 |
| Lilly USA, LLC Oct 2, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to WEST PLAINS, MO | $151 |
| Lilly USA, LLC Sep 29, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Sep 29, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC Sep 26, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Sep 26, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC Sep 25, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to BRANSON, MO | $49.00 |
| Lilly USA, LLC Sep 24, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Sep 24, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC Sep 4, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to BENTONVILLE, AR | $192 |
| Lilly USA, LLC Sep 4, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to VINITA, OK | $190 |
| Lilly USA, LLC Sep 4, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to VINITA, OK | $8.00 |
| Lilly USA, LLC Aug 26, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to OZARK, MO | $4.20 |
| Lilly USA, LLC Aug 25, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 25, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $675 |
| Lilly USA, LLC Aug 22, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 22, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC Aug 18, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 18, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC Aug 15, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to SPRINGFIELD, MO | $14.00 |
| Lilly USA, LLC Aug 14, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 14, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $675 |
| Lilly USA, LLC Aug 4, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Aug 4, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC Aug 4, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to BRANSON WEST, MO | $46.20 |
| Lilly USA, LLC Jul 15, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to JOPLIN, MO | $123 |
| Lilly USA, LLC Jul 1, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Jul 1, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC Jun 23, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to PEA RIDGE, AR | $70.70 |
| Lilly USA, LLC Jun 17, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to PEA RIDGE, AR | $70.70 |
| Lilly USA, LLC Jun 9, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Jun 6, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Jun 6, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC May 29, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to JAY, OK | $193 |
| Lilly USA, LLC May 23, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC May 23, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC May 23, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to BENTONVILLE, AR | $141 |
| Lilly USA, LLC May 23, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to AURORA, MO | $53.20 |
| Lilly USA, LLC May 20, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC May 20, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC May 19, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC May 19, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Lilly USA, LLC May 9, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $900 |
| Lilly USA, LLC May 7, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC May 7, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,575 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $506 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $405 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind | $365 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $324 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind | $269 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $148 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $74.00 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $54.00 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind | $31.97 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind | $12.10 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $11.50 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $5.74 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $4.15 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind | $2.69 |
| Eli Lilly and Company May 7, 2025 | Travel and Lodging travel to CHICAGO, IL · in-kind Company’s descriptionGROUND TRANSPORTATION EXPENSES FOR A RESEARCH RELATED MEETING WHICH MAY HAVE LASTED MULTIPLE DAYS | $2.49 |
| Lilly USA, LLC May 6, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to SAINT LOUIS, MO | $274 |
| Lilly USA, LLC May 6, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to BERRYVILLE, AR | $112 |
| Lilly USA, LLC May 5, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $900 |
| Lilly USA, LLC Apr 29, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to SPRINGDALE, AR | $102 |
| Lilly USA, LLC Apr 28, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Apr 28, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,125 |
| Boehringer Ingelheim Pharmaceuticals, Inc. Apr 28, 2025 | Travel and Lodging travel to DALLAS, TX · in-kind | $140 |
| Lilly USA, LLC Apr 17, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to MUSKOGEE, OK | $169 |
| Lilly USA, LLC Apr 17, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to TULSA, OK | $84.70 |
| Lilly USA, LLC Apr 17, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to MUSKOGEE, OK | $17.49 |
| Lilly USA, LLC Apr 17, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to TULSA, OK | $6.37 |
| Lilly USA, LLC Apr 16, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Apr 16, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Apr 16, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,575 |
| Lilly USA, LLC Apr 16, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,575 |
| Boehringer Ingelheim Pharmaceuticals, Inc. Apr 15, 2025 | Travel and Lodging travel to DFW Airport, TX · in-kind | $251 |
| Lilly USA, LLC Apr 14, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Apr 10, 2025 | Travel and Lodging travel to TULSA, OK · in-kind | $198 |
| Lilly USA, LLC Apr 10, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to CHANUTE, KS | $118 |
| Lilly USA, LLC Apr 10, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to CHANUTE, KS | $116 |
| Lilly USA, LLC Apr 1, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Apr 1, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,800 |
| Lilly USA, LLC Apr 1, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $1,575 |
| Lilly USA, LLC Mar 28, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $900 |
| Lilly USA, LLC Mar 28, 2025 | Travel and Lodging travel to CHANUTE, KS · in-kind | $172 |
| Lilly USA, LLC Mar 17, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $900 |
| Lilly USA, LLC Mar 11, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to DENVER, CO | $44.00 |
| Lilly USA, LLC Mar 11, 2025 | Travel and Lodging MOUNJARO · Diabetes · travel to DENVER, CO | $33.60 |
| Boehringer Ingelheim Pharmaceuticals, Inc. Mar 1, 2025 | Travel and Lodging travel to DFW Airport, TX · in-kind | $865 |
| Lilly USA, LLC Feb 28, 2025 | Compensation for services other than consulting (speaking, faculty) MOUNJARO · Diabetes | $3,600 |
| Lilly USA, LLC Feb 21, 2025 | Travel and Lodging travel to DENVER, CO · in-kind | $274 |
Each payment as the company reported it, with the products it named. Meals are counted in the totals above but not listed one by one.
From CMS Open Payments. A payment is not evidence of wrongdoing; many are for consulting, teaching or meals. Clinicians can review and dispute their records with CMS.
Industry-funded research
Named as a principal investigator on 23 industry-funded studies in 2025, from 8 companies. The companies reported $1,357,955 in research payments for these studies, mostly to the institutions running them.
- A phase 3, multicenter, randomized, double-blind, placebo-controlled, parallel-group study evaluating the efficacy and long-term safety of tirzepatide once weekly compared to placebo in adults with type 1 diabetes and…
Eli Lilly and Company - A Phase 3, randomised, double-blind, parallel-group, event-driven, cardiovascular safety study with BI 456906 administered subcutaneously compared with placebo in participants with overweight or obesity with establish…
Boehringer Ingelheim Pharmaceuticals, Inc. - A Study of Tirzepatide (LY3298176) on the Reduction on Morbidity and Mortality in Adults With Obesity
Eli Lilly and Company · Active, not recruiting · NCT05556512 - A Study of Retatrutide (LY3437943) in Participants Who Have Obesity or Overweight and Chronic Low Back Pain
Eli Lilly and Company · Active, not recruiting · NCT07035093 - A Master Protocol Study (LY900038) of Multiple Intervention-Specific-Appendices (ISAs) in Adult Participants With Obesity or Overweight
Eli Lilly and Company · Recruiting · NCT06143956 - A Study to Investigate Weight Management With LY3549492 Compared With Placebo in Adult Participants With Obesity or Overweight
Eli Lilly and Company · Completed · NCT06683508 - A Study to Investigate Weight Management With LY3841136 and Tirzepatide (LY3298176), Alone or in Combination, in Adult Participants With Obesity or Overweight With Type 2 Diabetes
Eli Lilly and Company · Completed · NCT06603571 - A Study to Test if Trevogrumab or Trevogrumab With Garetosmab When Taken With Semaglutide is Safe and How Well They Work in Adult Patients With Obesity for Weight Loss, Fat Loss, and Lean Mass Preservation
Regeneron Pharmaceuticals, Inc. · Active, not recruiting · NCT06299098 - An interventional efficacy and safety phase 3 doubleblind parallel group study to investigate intermittent prevention of menstrual migraine with rimegepant compared with placebo in women participants 18 to 45 years of…
Pfizer Inc. - Study of Oral Ubrogepant to Assess Adverse Events and Change in Disease Activity in Adult Participants With Menstrual Migraine
AbbVie Inc. · Active, not recruiting · NCT06417775
From CMS Open Payments research payments, where companies name up to five principal investigators per payment. Research payments usually go to hospitals, universities and research sites, not to the investigator personally. A payment is not evidence of wrongdoing.