Diana Alma Santiago, MD
Radiation Oncology Physician · Newnan, GA
Diana Alma Santiago, MD is a radiation oncology physician with a practice address in Newnan, Georgia, and NPI 1073552196, issued on Jun 5, 2006. Check the license (Georgia 42421, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- Diana Alma Santiago
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 42421 GA
Self-reported in NPPES; status is on the state search - Practice location
- 745 Poplar RD, Newnan, GA 30265
- Phone
- (770) 400-4700
- Enumerated
- Jun 5, 2006
- Record last updated
- Dec 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (770) 400-4096
- Medicaid IDs
- 00740847A GA
00740847B GA
00740847E GA
00740847C GA - Medicare enrollment
- Enrolled (PECOS I20071210000370); accepts Medicare assignment
- Medical or professional school
- Medical University Of South Carolina College Of Medicine, 1992
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 180 in Georgia → Look up another NPI →
Also registered at 745 Poplar RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Olufunsho Adekunle, MDInternal Medicine Physician1275982209
- Syed Ali, MDDiagnostic Radiology Physician1548497639
- Oladiran Amosu, MDAnesthesiology Physician1396797528
- Dustin Arnold, PA-CPhysician Assistant1679318083
- Cody BaumAnesthesiologist Assistant1437723772
- Allison Berger, PA-AAAnesthesiologist Assistant1376136242
Verify Diana Alma Santiago in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 42421Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% more Medicare Part D claims than the average radiation oncology physician in 2024
176 Medicare Part D claims for 85 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims. 42 claims were for opioids.
Most prescribed
- Tamsulosin Hcl36 claims
- Oxycodone-Acetaminophen18 claims
- Hydrocodone-Acetaminophen16 claims
- Ssd11 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: $88.52
4 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. 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
- Therapeutic Radiation Oncology, PCNewnan, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Diana Alma Santiago among 180 radiation oncology physician records in Georgia
Diana Alma Santiago, MD is one of 180 radiation oncology physician records with a practice address in Georgia. 85% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 53% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated1992 · median 2004 among the 142 with a school on file
- Record last updated2021 · 62% 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 Georgia 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 Georgia
There are 180 radiation oncology physician records in Georgia.
All 180 in Georgia → Every provider in Newnan → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Salman Eraj, MDNewnan, GA 302651891282463
- Elesyia Outlaw-Evans, MDNewnan, GA 302651821115304
- Lillian Shakibnia, MDNewnan, GA 302651235594755
- John Giesler, M.D.Riverdale, GA 302741649261926
- J. Warner Ray, MDRiverdale, GA 302741104871326
- Charles Woods, M.D.Riverdale, GA 302741679739825
- Kim Neisler, MDStockbridge, GA 302811093760217
- Sasha Wahab, MD, MAStockbridge, GA 302811053438762
Common questions
What is Diana Alma Santiago, MD's NPI number?
Diana Alma Santiago, MD's National Provider Identifier (NPI) is 1073552196, issued on Jun 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Alma Santiago, MD located?
The NPPES record lists a practice address at 745 Poplar RD, Newnan, GA, 30265. Phone: (770) 400-4700. Providers update this record themselves, so call before visiting.
How can I verify Diana Alma Santiago, MD's license?
NPPES lists Georgia license number 42421, as entered by the provider. Search the Georgia Composite Medical Board at https://medicalboard.georgia.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Diana Alma Santiago, MD prescribe under Medicare Part D?
In 2024, Diana Alma Santiago, MD had 176 Medicare Part D claims for 85 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.