Thomas Dee Callahan, M.D.
Family Medicine Physician · St George, UT
Thomas Dee Callahan, M.D. is a family medicine physician with a practice address in St George, Utah, and NPI 1043328123, issued on Aug 28, 2006. Check the license (Utah 159420-1205, as entered in NPPES) on the Utah Medical Licensing Board; the Medicare figures below come from public CMS files.
- Name
- Thomas Dee Callahan
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 159420-1205 UT
Self-reported in NPPES; status is on the state search - Practice location
- 1240 E 100 S, St George, UT 84790
- Phone
- (435) 656-5323
- Enumerated
- Aug 28, 2006
- Record last updated
- Jan 8, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (435) 656-5127
- Medicare enrollment
- Enrolled (PECOS I20060103000559); accepts Medicare assignment
- Medical or professional school
- University Of Utah School Of Medicine, 1975
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,411 in Utah → Look up another NPI →
Also registered at 1240 E 100 S
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alesa AllredBehavior Analyst1407160732
- Michael Brown, DDS MSPediatric Dentistry1316055718
- Douglas Callahan, D.O.Family Medicine Physician1265540355
- Jennifer HillCounselor1740798370
- Bradley StewartMental Health Counselor1992316897
- Adam Wahlstrom, D.OPediatric Adolescent Medicine Physician1881010023
Verify Thomas Dee Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersUtah Medical Licensing Board
Search for license 159420-1205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average family medicine physician in 2024
8,166 Medicare Part D claims for 563 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 283 claims were for opioids.
Most prescribed
- Levothyroxine Sodium329 claims
- Rosuvastatin Calcium304 claims
- Omeprazole263 claims
- Losartan Potassium241 claims
- Potassium Chloride221 claims
- Lisinopril215 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $536.90
32 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Callahan Clinic, PCSt George, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thomas Dee Callahan among 1,411 family medicine physician records in Utah
Thomas Dee Callahan, M.D. is one of 1,411 family medicine physician records with a practice address in Utah. 84% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 54% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 67% of these records are
- Graduated1975 · median 2008 among the 942 with a school on file
- Record last updated2013 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Utah practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
62 family medicine physician records list a practice address in St George
They are 62 of the 3,879 NPPES records with a practice address in St George, and 1,411 family medicine physician records in Utah.
All 1,411 in Utah → Every provider in St George → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Lawrence Cain, MDSt George, UT 847901972521201
- Curtis Carter, MDSt George, UT 847901245225325
- Boyd Carter, MDSt George, UT 847901386667202
- Stephen Clark, DOSt George, UT 847901043238363
- Dagmar Crosby, MDSaint George, UT 847901154303352
- Daniel Davie, MDSt George, UT 847901356376677
- Paul Dunn, MDSt George, UT 847901932112042
- Clayton Fuller, MDSt George, UT 847901801840962
Common questions
What is Thomas Dee Callahan, M.D.'s NPI number?
Thomas Dee Callahan, M.D.'s National Provider Identifier (NPI) is 1043328123, issued on Aug 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Dee Callahan, M.D. located?
The NPPES record lists a practice address at 1240 E 100 S, St George, UT, 84790. Phone: (435) 656-5323. Providers update this record themselves, so call before visiting.
How can I verify Thomas Dee Callahan, M.D.'s license?
NPPES lists Utah license number 159420-1205, as entered by the provider. Search the Utah Medical Licensing Board at https://secure.utah.gov/llv/search/index.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thomas Dee Callahan, M.D. prescribe under Medicare Part D?
In 2024, Thomas Dee Callahan, M.D. had 8,166 Medicare Part D claims for 563 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.