Donn Marshall Davis, MD
Radiation Oncology Physician · Prescott, AZ
Donn Marshall Davis, MD is a radiation oncology physician with a practice address in Prescott, Arizona, and NPI 1003899816, issued on Nov 25, 2005. Check the license (Arizona 58993, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Donn Marshall Davis
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- 58993 AZ
39768 CO
G53197 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1100 Gail Gardner Way, Prescott, AZ 86305
- Phone
- (928) 776-1040
- Enumerated
- Nov 25, 2005
- Record last updated
- Mar 10, 2022
- Fax
- (928) 776-1041
- Medicaid ID
- 75206307 CO
- Medicare enrollment
- Enrolled (PECOS I20190920001060); accepts Medicare assignment
- Medical or professional school
- University Of Nebraska College Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 156 in Arizona → Look up another NPI →
Also registered at 1100 Gail Gardner Way
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roscoe Chan, MD, FRCPCRadiation Oncology Physician1891792941
- Dhirendra Patel, MDRadiation Oncology Physician1790773893
Verify Donn Marshall Davis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 58993Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% fewer Medicare Part D claims than the average radiation oncology physician in 2024
60 Medicare Part D claims for 37 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Tamsulosin Hcl36 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.
The MIPS final score for 2023 (Medicare payment program): 82.6 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Arizona Oncology Associates PCPrescott, AZ
- City OF Hope Medical Group OF Arizona LLCPrescott, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Donn Marshall Davis among 156 radiation oncology physician records in Arizona
Donn Marshall Davis, MD is one of 156 radiation oncology physician records with a practice address in Arizona. 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 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 85% newer
- In a Medicare fileYes · 84% of these records are
- In the CMS Doctors and Clinicians fileYes · 74% of these records are
- Graduated1983 · median 2003 among the 115 with a school on file
- Record last updated2022 · 46% 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 Arizona 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 Arizona
There are 156 radiation oncology physician records in Arizona.
All 156 in Arizona → Every provider in Prescott → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Roscoe Chan, MD, FRCPCPrescott, AZ 863051891792941
- Dhirendra Patel, MDPrescott, AZ 863051790773893
- David Beyer, MDSedona, AZ 863361114992252
- Nicholas Roman, MD, PHDLake Havasu City, AZ 864031427255314
- Charles Bruso, M.D.Bullhead City, AZ 864421114104981
- Andrew David, M.D.Flagstaff, AZ 860011144222001
- Stephanie Rice, MDFlagstaff, AZ 860011346668225
- Victor Henderson, MDShow Low, AZ 859011245225309
Common questions
What is Donn Marshall Davis, MD's NPI number?
Donn Marshall Davis, MD's National Provider Identifier (NPI) is 1003899816, issued on Nov 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Donn Marshall Davis, MD located?
The NPPES record lists a practice address at 1100 Gail Gardner Way, Prescott, AZ, 86305. Phone: (928) 776-1040. Providers update this record themselves, so call before visiting.
How can I verify Donn Marshall Davis, MD's license?
NPPES lists Arizona license number 58993, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Donn Marshall Davis, MD prescribe under Medicare Part D?
In 2024, Donn Marshall Davis, MD had 60 Medicare Part D claims for 37 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Donn Marshall Davis, MD's MIPS final score?
The 2023 MIPS final score is 82.6 of 100. The average among 454,083 clinicians with a measured score was 83.5.
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.