Spencer N. Ashton, M.D
Radiation Oncology Physician · St George, UT
Spencer N. Ashton, M.D is a radiation oncology physician with a practice address in St George, Utah, and NPI 1063678514, issued on Aug 4, 2008. Check the license (Utah 8602188-1205, as entered in NPPES) on the Utah Medical Licensing Board; the Medicare figures below come from public CMS files.
- Name
- Spencer N. Ashton
- Credential
- M.D
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 8602188-1205 UT
MD60226451 WA
Self-reported in NPPES; status is on the state search - Practice location
- 600 S Medical Center Dr, St George, UT 84790
- Phone
- (435) 688-4175
- Enumerated
- Aug 4, 2008
- Record last updated
- Apr 9, 2026
- Medicaid IDs
- 1063678514 WA
500636850 OR - Medicare enrollment
- Enrolled (PECOS I20130617000255); accepts Medicare assignment
- Medical or professional school
- University Of Virginia School Of Medicine, 2006
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 62 in Utah → Look up another NPI →
Also registered at 600 S Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Brian Bingham, M.D.Radiation Oncology Physician1952831984
- Colby Cevering, DONeurology Physician1225664147
- Elisa Edwards, APRNNurse Practitioner1831558204
- Michelle Gilbert, MDInternal Medicine Physician1992876452
- Jessica Goldsberry, MS, CGCGenetic Counselor (M.S.)1215419817
- Stephen Grant, MDRadiation Oncology Physician1477901650
Verify Spencer N. Ashton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersUtah Medical Licensing Board
Search for license 8602188-1205Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% fewer Medicare Part D claims than the average radiation oncology physician in 2024
122 Medicare Part D claims for 62 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims. 27 claims were for opioids.
Most prescribed
- Tamsulosin Hcl20 claims
- Oxycodone Hcl12 claims
- Dexamethasone11 claims
- Hydrocodone-Acetaminophen11 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: $54.48
1 payment: food and beverage; the largest payer was Siemens Medical Solutions USA, Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Ihc Health Services IncFillmore, UT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Spencer N. Ashton among 62 radiation oncology physician records in Utah
Spencer N. Ashton, M.D is one of 62 radiation oncology physician records with a practice address in Utah. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 48% of them.
- NPI issued2008 · 48% of these records are older, 44% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2006 · median 2007 among the 40 with a school on file
- Record last updated2026 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Utah practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Utah
There are 62 radiation oncology physician records in Utah.
All 62 in Utah → Every provider in St George → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Brian Bingham, M.D.St George, UT 847901952831984
- Stephen Grant, MDSt George, UT 847901477901650
- Ray Richards, M.D.St George, UT 847901063551695
- Benita Kruzel, M.D.Ivins, UT 847381952524266
- Christian Barney, M.D.Provo, UT 846041538504436
- Tarlton Blair, MDProvo, UT 846041477655181
- Bruce McAllister, MDProvo, UT 846041144223835
- David Pratt, MDProvo, UT 846041851492003
Common questions
What is Spencer N. Ashton, M.D's NPI number?
Spencer N. Ashton, M.D's National Provider Identifier (NPI) is 1063678514, issued on Aug 4, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Spencer N. Ashton, M.D located?
The NPPES record lists a practice address at 600 S Medical Center Dr, St George, UT, 84790. Phone: (435) 688-4175. Providers update this record themselves, so call before visiting.
How can I verify Spencer N. Ashton, M.D's license?
NPPES lists Utah license number 8602188-1205, 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 Spencer N. Ashton, M.D prescribe under Medicare Part D?
In 2024, Spencer N. Ashton, M.D had 122 Medicare Part D claims for 62 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.