$5,619 in research paymentsDiabetes Mellitus, Type 1Autoimmune DiseasesInsulin DegludecInsulin Efsitora Alfa
Dr. Ralph J. Duda Jr., MD
NPI1356436406
- Medicare services, 2018
- 46
- Part D claims, 2023
- 13
- Clinical trials
- 3
- Industry payments
- $1.1M
- Affiliated sites
- 1
- Practice address
- 1135 E Lakewood St, Springfield, MO 65810-2403
- Practice phone
- Call (417) 879-6364
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Iron Bridge Diabetes & Endo
Physician office · Springfield, Missouri
Find Dr. Duda's professional email, personal email and mobile number
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Dr. Ralph J. Duda Jr. is an endocrinologist in Springfield, Missouri
Dr. Duda practices at Iron Bridge Diabetes & Endo in Springfield, Missouri.
Dr. Duda's NPI, 1356436406, was assigned on October 4, 2006. Dr. Duda holds Missouri license R7G82.
NPI and contact details
- NPI
- 1356436406NPI Registry (opens in a new tab)
- NPI enumeration date
- October 4, 2006
- NPI status
- Active
- Practice phone
- (417) 879-6364
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ralph J. Duda Jr. practices at 2 locations in Springfield, Missouri
Dr. Duda's primary practice is Iron Bridge Diabetes & Endo, at 1135 E Lakewood St, Springfield, MO 65810-2403. The practice phone is (417) 879-6364. The NPI Registry lists Dr. Duda's practice address as 909 E Republic Rd Ste D200, Springfield, MO 65807-6012.
- Iron Bridge Diabetes & EndoPrimary1135 E Lakewood St, Springfield, MO 65810-2403Phone(417) 879-6364
- NPI Registry address909 E Republic Rd Ste D200, Springfield, MO 65807-6012Phone(417) 883-7889
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Ralph J. Duda Jr. is affiliated with 1 site of care and 1 medical group
Dr. Duda's primary practice is Iron Bridge Diabetes & Endo in Springfield, Missouri. The medical group on file is Oklahoma Heart Institute.
Iron Bridge Diabetes & EndoPrimary
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Ralph J. Duda Jr.'s practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Duda practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Iron Bridge Diabetes & Endo | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ralph J. Duda Jr. is one of 182 endocrinologists in Missouri
Endocrinology, diabetes and metabolism is Dr. Duda's primary specialty in the NPI Registry, under taxonomy code 207RE0101X. Dr. Duda is licensed in Missouri.
Specialties and state licenses
- Endocrinology, diabetes and metabolism, MissouriPrimary
Endocrinologists near Dr. Duda
Counts of endocrinologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ralph J. Duda Jr. billed Medicare for 46 services in 2018
CMS data shows 46 Medicare services from Dr. Duda across 3 procedure codes in 2018. Medicare paid $955 for them. Every service was in an office.
Medicare services, 201846
Paid by Medicare$955
Procedure codes3
Dr. Duda's Medicare services by type, 2017 to 2018
- 2017
- 2018
- Office and hospital visits
- 2017: 9582018: 3596%
- Surgery
- 2017: 1072018: 1190%
- Lab and pathology
- 2017: 2302018: 0100%
- Tests and treatments
- 2017: 302018: 0100%
Dr. Duda compared with the Missouri median for endocrinologists, 2018
- Dr. Duda
- Missouri median
- Medicare services
- 46vs 77294% below
- Part D claims
- 13vs 1,61199% below
Medians across 182 endocrinologists in Missouri with Dmand AI profiles that report each measure.
Dr. Duda's most billed Medicare procedure codes, 2018
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Duda?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Duda and other endocrinologists in Missouri.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ralph J. Duda Jr.'s patients have a median age of 74
Across all payers, Dmand AI patient panel data puts Dr. Duda's median patient age at 74, with 75% women.
Dr. Duda's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 74
Patient panel by sex, all payers
- Women75%
- Men25%
Source: Dmand AI Patient Panel Data
Dr. Ralph J. Duda Jr. wrote 13 Medicare Part D claims in 2023
In 2023, Dr. Duda wrote 13 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $245 in total drug cost. In 2022, CMS named 11 claims across 1 drug.
Part D claims, 202313
Drugs named by CMS1
Total drug cost$245
Dr. Duda's most prescribed drugs by claims, 2023
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 112023: 1318%
Drugs named by CMS: 1 in 2023, 1 in 2022.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Ralph J. Duda Jr. has worked on 3 clinical trials
Dmand AI links Dr. Duda to 3 clinical trials. Conditions studied include Diabetes Mellitus, Type 2, Diabetes Mellitus and Diabetes Mellitus, Type 1. Eli Lilly and Company sponsors the most, 3. Open Payments lists research payments to Dr. Duda that name 3 trials.
Conditions in Dr. Duda's trials
- Diabetes Mellitus, Type 2
- Diabetes Mellitus
- Diabetes Mellitus, Type 1
- Autoimmune Diseases
Investigators on the most trials with Dr. Duda
- Anuj Bhargava, MD3 shared trials
- Sumana Gangi, MD3 shared trials
- Paul C. Norwood, FACP, MD3 shared trials
Recent clinical trials with Dr. Duda
$1,622 in research paymentsDiabetes Mellitus, Type 2Diabetes MellitusInsulin DegludecInsulin Efsitora Alfa
$36,788 in research paymentsDiabetes Mellitus, Type 2Diabetes MellitusInsulin Efsitora AlfaInsulin Degludec
Sources: Open Payments (CMS), 2025 data, released July 7, 2026; ClinicalTrials.gov (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ralph J. Duda Jr. received $1,091,835 in industry payments from 2016 to 2025
CMS Open Payments shows 1,922 general payments to Dr. Duda from 39 drug and device companies from 2016 to 2025. Speaker and faculty fees make up the largest share, 89% of the total. Eli Lilly and Company paid the most, $694,215. It also lists 3 research payments totaling $44,029 in 2022, naming 3 clinical trials.
General payments to Dr. Duda by program year, 2016 to 2025
General payments to Dr. Duda by kind, 2016 to 2025
$1.1Min total
- Speaker and faculty fees$976,07989%
- Travel and lodging$62,6996%
- Consulting fees$30,6133%
- Food and beverage$21,2752%
- Other$1,1690%
Companies that paid Dr. Duda the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Ralph J. Duda Jr.'s profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| Clinical trials and co-investigators | ClinicalTrials.gov (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Ralph J. Duda Jr.
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Ralph J. Duda Jr.'s NPI number?
Dr. Ralph J. Duda Jr.'s NPI number is 1356436406. It was assigned on October 4, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ralph J. Duda Jr.?
Dr. Ralph J. Duda Jr. is an endocrinologist in Springfield, Missouri. The primary specialty in the NPI Registry is Endocrinology, Diabetes & Metabolism Physician (taxonomy code 207RE0101X).
Where does Dr. Ralph J. Duda Jr. practice?
Dr. Duda practices at 1135 E Lakewood St, Springfield, MO 65810-2403. Dr. Duda also practices at 909 E Republic Rd Ste D200, Springfield, MO 65807-6012. Dr. Duda's primary practice is Iron Bridge Diabetes & Endo in Springfield, Missouri.
What is Dr. Ralph J. Duda Jr.'s office phone number?
The practice phone on file for Dr. Duda is (417) 879-6364.
What is Dr. Ralph J. Duda Jr.'s medical license number?
Dr. Duda holds Missouri license R7G82.
What medical group is Dr. Ralph J. Duda Jr. part of?
Dr. Duda is linked to Oklahoma Heart Institute.
Does Dr. Ralph J. Duda Jr. accept Medicare?
Yes. CMS data shows Dr. Duda billed Medicare for 46 services in 2018.
What services does Dr. Ralph J. Duda Jr. bill to Medicare?
In 2018, Dr. Duda's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and surgery: heart and blood vessels (36415).
What drugs does Dr. Ralph J. Duda Jr. prescribe most?
In 2023 Medicare Part D data, Dr. Duda's most prescribed drugs by claims were Nebivolol HCl.
Has Dr. Ralph J. Duda Jr. received payments from drug or device companies?
CMS Open Payments shows $1,091,835 in general payments to Dr. Duda from 39 companies from 2016 to 2025. The largest total came from Eli Lilly and Company.
How long has Dr. Ralph J. Duda Jr. been practicing?
Dr. Duda's NPI was assigned in 2006.
Does Dr. Ralph J. Duda Jr. do research?
Dr. Duda has worked on 3 clinical trials.
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