Dr. Thomas Eldon Callahan, DO
- Part D claims, 2026
- 23
- Industry payments
- $9
- Affiliated sites
- 2
- Medical group
- 1
- State license
- 1
- Practice address
- 1500 Associates Drive, Dubuque, IA 52002
- Practice phone
- Call (563) 584-4500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Tri-State Surgery Center - Dubuque
Surgery Center - Medicare-Certified · Dubuque, Iowa
Find Dr. Callahan'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. Thomas Eldon Callahan is a pediatrician in Dubuque, Iowa
Dr. Callahan practices at Tri-State Surgery Center - Dubuque in Dubuque, Iowa.
Dr. Callahan's NPI, 1528262136, was assigned on June 14, 2007. Dr. Callahan holds Iowa license 4069.
- NPI
- 1528262136NPI Registry (opens in a new tab)
- NPI enumeration date
- June 14, 2007
- NPI status
- Active
- Practice phone
- (563) 584-4500
- 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. Thomas Eldon Callahan practices at Tri-State Surgery Center - Dubuque in Dubuque, Iowa
Dr. Callahan's primary practice is Tri-State Surgery Center - Dubuque, at 1500 Associates Drive, Dubuque, IA 52002. The practice phone is (563) 584-4500.
- Tri-State Surgery Center - Dubuque1500 Associates Drive, Dubuque, IA 52002Phone(563) 584-4500
Source: Dmand AI Affiliation Data
Dr. Thomas Eldon Callahan is affiliated with 2 sites of care and 1 medical group
Dr. Callahan's primary practice is Tri-State Surgery Center - Dubuque in Dubuque, Iowa. The medical group on file is Medical Associates Clinic. Dmand AI also links Dr. Callahan to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Thomas Eldon Callahan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Callahan practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Tri-State Surgery Center - Dubuque | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Thomas Eldon Callahan is one of 377 pediatricians in Iowa
Pediatrics is Dr. Callahan's primary specialty in the NPI Registry, under taxonomy code 208000000X. Dr. Callahan is licensed in Iowa.
Specialties and state licenses
- Pediatrics, IowaPrimary
Pediatricians near Dr. Callahan
Counts of pediatricians 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. Thomas Eldon Callahan's patients have a median age of 7
Across all payers, Dmand AI patient panel data puts Dr. Callahan's median patient age at 7, with 44% women.
Dr. Callahan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 7
Patient panel by sex, all payers
- Women44%
- Men56%
Source: Dmand AI Patient Panel Data
Dr. Thomas Eldon Callahan wrote 23 Medicare Part D claims in 2026
In 2026, Dr. Callahan wrote 23 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 14 of them, across 1 drug with 11 or more claims each, at $1,197 in total drug cost. In 2023, CMS named 29 claims across 2 drugs.
Dr. Callahan'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 292024: 1452%
Drugs named by CMS: 1 in 2024, 2 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), 2026 data
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Dr. Thomas Eldon Callahan received $9 in industry payments in 2023
CMS Open Payments shows 1 general payment to Dr. Callahan from 1 drug or device company in 2023. Food and beverage make up the largest share, 100% of the total. Corium, LLC paid the most, $9.
Companies that paid Dr. Callahan the most, 2023 to 2023
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Thomas Eldon Callahan'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 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)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| 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. Thomas Eldon Callahan
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. Thomas Eldon Callahan's NPI number?
Dr. Thomas Eldon Callahan's NPI number is 1528262136. It was assigned on June 14, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. Thomas Eldon Callahan?
Dr. Thomas Eldon Callahan is a pediatrician in Dubuque, Iowa. The primary specialty in the NPI Registry is Pediatrics Physician (taxonomy code 208000000X).
Where does Dr. Thomas Eldon Callahan practice?
Dr. Callahan practices at 1500 Associates Drive, Dubuque, IA 52002. Dr. Callahan's primary practice is Tri-State Surgery Center - Dubuque in Dubuque, Iowa. Dmand AI also links Dr. Callahan to 1 group practice or clinic, and a free account names each one.
What is Dr. Thomas Eldon Callahan's office phone number?
The practice phone on file for Dr. Callahan is (563) 584-4500. Dmand AI also checks direct phone and mobile numbers, available with a free account.
What is Dr. Thomas Eldon Callahan's email address?
Dmand AI checks professional and personal email addresses for Dr. Callahan through healthcare-specific waterfall enrichment. They are available with a free Dmand AI account.
What is Dr. Thomas Eldon Callahan's medical license number?
Dr. Callahan holds Iowa license 4069.
What medical group is Dr. Thomas Eldon Callahan part of?
Dr. Callahan is linked to Medical Associates Clinic.
Who does Dr. Thomas Eldon Callahan practice with?
Dmand AI links 253 HCPs to Dr. Callahan's primary medical group, 7 of them pediatricians. A free account lists them, with verified contacts.
What drugs does Dr. Thomas Eldon Callahan prescribe most?
In 2024 Medicare Part D data, Dr. Callahan's most prescribed drugs by claims were Guanfacine HCl.
Has Dr. Thomas Eldon Callahan received payments from drug or device companies?
CMS Open Payments shows $9 in general payments to Dr. Callahan from 1 company from 2023 to 2023. The largest total came from Corium, LLC.
How long has Dr. Thomas Eldon Callahan been practicing?
Dr. Callahan's NPI was assigned in 2007.
What EHR does Dr. Thomas Eldon Callahan's practice use?
Dmand AI tracks the EHR system at Tri-State Surgery Center - Dubuque and at 1 more affiliated site. The vendor and product are available with a free Dmand AI account.
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