Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Thomas Dee Callahan, MD

Individual provider Family Medicine Physician · NPI 1043328123

Thomas Dee Callahan, MD is registered under Family Practice in St George, Utah. Graduated from University of Utah School of Medicine in 1975, 51 years ago. Practices with Callahan Clinic, PC, a 4-clinician group and accepts Medicare assignment. Licensed in Utah.

Years since qualifying
51
Trained at
University of Utah School of Medicine
Licensed in
UT
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1240 E 100 S Ste 15A
St George, UT 84790-3001 Not confirmed with CMS for 13 years — call before visiting
Phone: (435) 656-5323
Fax: (435) 656-5127
Show map & directions

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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Medicine Physician (primary) Taxonomy 207Q00000X · Licence 159420-1205 (UT)

Record details

NPI number1043328123
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 28, 2006
Last updated in NPPESJanuary 8, 2013

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyFAMILY PRACTICE
Medical schoolUNIVERSITY OF UTAH SCHOOL OF MEDICINE
Graduated 1975 (51 years in practice)
Group practice Callahan Clinic, Pc — 4 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Procedures

From CMS Care Compare, which counts the procedures a clinician billed to Original Medicare and Medicare Advantage over a recent 12-month period. CMS reports a fixed list of common procedures, so this is not everything the clinician does. Counts of 10 or fewer are given as a range, because CMS withholds small numbers.

Removal of skin lesions 1–10 times

The percentile compares how often this clinician performed the procedure with other clinicians who performed it, as CMS calculates it. It measures volume, not outcomes or skill.

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients331
Services billed 2,333 a service is one billed item, such as a visit, a test or a procedure
Average patient age76

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $564 29 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Mesa View Regional Hospital Hospital · Mesquite, NV
  • Applegate Homecare Home health agency · South Ogden, UT · listed as Applegate Homecare & Hospice, LLC
  • Zion'S Way Home Health Home health agency · St. George, UT · listed as Zion's Way Home Health Inc
  • St. George Rehabilitation Nursing home · St. George, UT · listed as Beaver Valley Hospital
  • St. George Regional Hospital Hospital · St George, UT
  • Intermountain Health Home Health - St. George Home health agency · St George, UT
  • Applegate Hospice St. George Hospice · St. George, UT

Colleagues at Callahan Clinic, PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice.

Other providers in St George