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Dr. John T. Ducker, MD
NPI1003868597PAC ID5698755882
- Medicare services, 2024
- 3,583
- Medicare patients, 2024
- 515
- Part D claims, 2024
- 2,711
- Publications
- 1
- Hospital affiliations
- 6
- Practice address
- 602 Sawyer Rd, Kendallville, IN 46755
- Practice phone
- Call (260) 599-0423
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
DaVita Kendallville Renal Center (Sawyer Rd)
Dialysis Center - Independent · Kendallville, Indiana
Find Dr. Ducker's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John T. Ducker is a nephrologist in Kendallville, Indiana
Dr. Ducker practices at DaVita Kendallville Renal Center (Sawyer Rd) in Kendallville, Indiana.
Dr. Ducker's NPI, 1003868597, was assigned on May 16, 2006. Dr. Ducker graduated from Boonshoft School of Medicine in 1992. Dr. Ducker's Indiana license number on file is 01041634A.
NPI and contact details
- NPI
- 1003868597NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5698755882
- NPI enumeration date
- May 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (260) 599-0423
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John T. Ducker practices at DaVita Kendallville Renal Center (Sawyer Rd) in Kendallville, Indiana
Dr. Ducker's primary practice is DaVita Kendallville Renal Center (Sawyer Rd), at 602 Sawyer Rd, Kendallville, IN 46755 in Noble County. The practice phone is (260) 599-0423.
- DaVita Kendallville Renal Center (Sawyer Rd)602 Sawyer Rd, Kendallville, IN 46755 · Noble CountyPhone(260) 599-0423
Source: Dmand AI Affiliation Data
Dr. John T. Ducker is affiliated with 13 sites of care and 1 medical group
Dr. Ducker's primary practice is DaVita Kendallville Renal Center (Sawyer Rd) in Kendallville, Indiana. Dr. Ducker is also affiliated with Parkview Regional Medical Center. The medical group on file is NANI - Nephrology Associates of Northern Illinois & Indiana. Dmand AI also links Dr. Ducker to 5 more hospitals, 4 dialysis centers, 1 group practice or clinic and 1 school health center, each named with a free account.
DaVita Kendallville Renal Center (Sawyer Rd)Primary
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John T. Ducker's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ducker practices, 13 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| DaVita Kendallville Renal Center (Sawyer Rd) | Available with a free account |
| +12 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John T. Ducker is one of 197 nephrologists in Indiana
Nephrology is Dr. Ducker's primary specialty in the NPI Registry, under taxonomy code 207RN0300X. Dr. Ducker is board certified in nephrology by the American Board of Internal Medicine. Dmand AI has Dr. Ducker's licenses on file in 2 states: Indiana and Ohio.
Specialties and state licenses
- Nephrology, IndianaPrimary
- Ohio license
Clinical focus
Dmand AI lists chronic anemia, chronic kidney disease, fluid and electrolyte imbalances and parathyroid gland disorder among the conditions Dr. Ducker treats.
Nephrologists near Dr. Ducker
Counts of nephrologists 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. John T. Ducker billed Medicare for 3,583 services in 2024
CMS data shows 3,583 Medicare services from Dr. Ducker across 31 procedure codes in 2024, for 515 Medicare patients. Medicare paid $207,912 for them.
Medicare services, 20243,583
Medicare patients515
Paid by Medicare$207,912
Procedure codes31
Dr. Ducker's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,8692024: 1,50120%
- Lab and pathology
- 2023: 1,6582024: 1,21227%
- Tests and treatments
- 2023: 3292024: 50052%
- Other services
- 2023: 02024: 370
Where Dr. Ducker's Medicare services took place, 2024
- In an office2,77577%
- In a facility80823%
Dr. Ducker compared with the Indiana median for nephrologists, 2024
- Dr. Ducker
- Indiana median
- Medicare services
- 3,583vs 9193.9 times
- Medicare patients
- 515vs 34251% above
- Part D claims
- 2,360vs 8232.9 times
Medians across 204 nephrologists in Indiana with Dmand AI profiles that report each measure.
Dr. Ducker's most billed Medicare procedure codes, 2024
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. Ducker?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ducker and other nephrologists in Indiana.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John T. Ducker treated 515 Medicare patients in 2024, average age 70
CMS counts 515 Medicare patients who saw Dr. Ducker in 2024. The largest group is 65 to 74, with 176 patients. 75% of them have chronic kidney disease, and 75% have high blood pressure. 29% are also on Medicaid. Their average risk score is 4.82, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Ducker's median patient age at 69, with 44% women.
Medicare patients, 2024515
Average age70
Average risk score4.82
Also on Medicaid29%
Dr. Ducker's Medicare patients by age, 2024
Dr. Ducker's Medicare patients by sex, 2024
- Women22844%
- Men28756%
Chronic conditions among Dr. Ducker's Medicare patients, 2024
- Chronic kidney disease75%
- High blood pressure75%
- High cholesterol75%
- Diabetes64%
- Heart failure50%
- Ischemic heart disease47%
- Arthritis46%
- Mood disorders38%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ducker's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women44%
- Men55%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John T. Ducker wrote 2,711 Medicare Part D claims in 2024
In 2024, Dr. Ducker wrote 2,711 Medicare Part D claims for 341 patients. 85% of them were for generic drugs. CMS names the drug for 2,360 of them, across 58 drugs with 11 or more claims each, at $426,890 in total drug cost. In 2023, CMS named 2,479 claims across 56 drugs.
Part D claims, 20242,711
Drugs named by CMS58
Total drug cost$426,890
Part D patients341
Dr. Ducker's Part D claims by kind of drug, 2024
- Generic2,306 claims85%
- Brand-name394 claims15%
- Other11 claims0%
Dr. Ducker's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Ducker's Part D claims, 2024
- Antibiotics4%103 of 2,711 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,4792024: 2,3605%
Drugs named by CMS: 58 in 2024, 56 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. John T. Ducker takes part in Medicare
Dr. Ducker accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John T. Ducker has 1 publication on record
Dmand AI links 1 paper to Dr. Ducker in 2018.
Papers1
Recent publications by Dr. Ducker
See who Dr. Ducker researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Ducker works with, so you can find a warm path to the right nephrologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John T. Ducker received $10,412 in industry payments from 2016 to 2025
CMS Open Payments shows 305 general payments to Dr. Ducker from 36 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 61% of the total. Fresenius USA Marketing, Inc. paid the most, $3,730.
General payments to Dr. Ducker by program year, 2016 to 2025
General payments to Dr. Ducker by kind, 2016 to 2025
$10.4Kin total
- Food and beverage$6,38861%
- Travel and lodging$3,80937%
- Education$2152%
Companies that paid Dr. Ducker the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John T. Ducker has 1 award and honors on record
Dmand AI lists 1 award for Dr. Ducker, most recently CMS Stage 1 EHR in 2013.
Awards and honors for Dr. Ducker
- 2013
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. John T. Ducker graduated from Boonshoft School of Medicine
Dr. Ducker graduated from Boonshoft School of Medicine in 1992.
- Medical school
- Board certified in nephrology
Source: Dmand AI Professional Profile Data
Dr. John T. Ducker accepts plans from 15 insurance carriers
Dr. Ducker is in network with 15 carriers, including Aetna, United Healthcare and Cigna. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.
- Aetna
- United Healthcare
- Cigna
- Elevance
- HCSC
- Aspirus Health Plan
- Blue Cross Blue Shield of Michigan
- CareSource
- +7 more carriersWith a free account
Plan types Dr. Ducker accepts, by number of carriers
- HMO8
- PPO8
- Medicare7
- EPO4
- POS4
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. John T. Ducker'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy 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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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. John T. Ducker
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. John T. Ducker's NPI number?
Dr. John T. Ducker's NPI number is 1003868597. It was assigned on May 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John T. Ducker?
Dr. John T. Ducker is a nephrologist in Kendallville, Indiana. The primary specialty in the NPI Registry is Nephrology Physician (taxonomy code 207RN0300X).
Where does Dr. John T. Ducker practice?
Dr. Ducker practices at 602 Sawyer Rd, Kendallville, IN 46755. Dr. Ducker's primary practice is DaVita Kendallville Renal Center (Sawyer Rd) in Kendallville, Indiana. Dmand AI also links Dr. Ducker to 5 hospitals, 4 dialysis centers, 1 group practice or clinic and 1 school health center.
What is Dr. John T. Ducker's office phone number?
The practice phone on file for Dr. Ducker is (260) 599-0423.
What is Dr. John T. Ducker's medical license number?
Dr. Ducker's Indiana license number on file is 01041634A, one of the licenses on file in 2 states.
Which states has Dr. John T. Ducker been licensed in?
Dmand AI has state licenses on file for Dr. Ducker in Indiana (1993 to 2025) and Ohio (1997 to 2027).
Which hospitals is Dr. John T. Ducker affiliated with?
Dr. Ducker is affiliated with Parkview Regional Medical Center. Dmand AI links Dr. Ducker to 5 more hospitals.
What medical group is Dr. John T. Ducker part of?
Dr. Ducker is linked to NANI - Nephrology Associates of Northern Illinois & Indiana.
Does Dr. John T. Ducker accept Medicare?
Yes. CMS data shows Dr. Ducker billed Medicare for 3,583 services in 2024, and Dr. Ducker accepts Medicare assignment.
How many Medicare patients does Dr. John T. Ducker see?
CMS counts 515 Medicare patients who saw Dr. Ducker in 2024, with an average age of 70.
Show 8 more questionsShow fewer questions
Is Dr. John T. Ducker board certified?
Yes. Dr. Ducker is board certified in nephrology by the American Board of Internal Medicine.
What services does Dr. John T. Ducker bill to Medicare?
In 2024, Dr. Ducker's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and medicare service (G2211).
Where did Dr. John T. Ducker go to medical school?
Dr. Ducker graduated from Boonshoft School of Medicine in 1992.
What drugs does Dr. John T. Ducker prescribe most?
In 2024 Medicare Part D data, Dr. Ducker's most prescribed drugs by claims were Lisinopril, Prednisone and Amlodipine Besylate.
Has Dr. John T. Ducker received payments from drug or device companies?
CMS Open Payments shows $10,412 in general payments to Dr. Ducker from 36 companies from 2016 to 2025. The largest total came from Fresenius USA Marketing, Inc.
How long has Dr. John T. Ducker been practicing?
Dr. Ducker graduated from medical school in 1992, 34 years ago.
Does Dr. John T. Ducker do research?
Dmand AI links 1 publication to Dr. Ducker.
What insurance does Dr. John T. Ducker accept?
Dr. Ducker is in network with 15 carriers, including Aetna, United Healthcare and Cigna. HMO plans come from the most carriers, 8. Check the plan with the practice before a visit.
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