Wallace Duncan, M.D.
Internal Medicine Physician · Lithonia, GA
Wallace Duncan, M.D. is an internal medicine physician with a practice address in Lithonia, Georgia, and NPI 1821153529, issued on Dec 25, 2006. Check the license (Georgia 041109, as entered in NPPES) on the Georgia Composite Medical Board; the Medicare figures below come from public CMS files.
- Name
- Wallace Duncan
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 041109 GA
Self-reported in NPPES; status is on the state search - Practice location
- 5900 Hillandale Dr, Lithonia, GA 30058
- Phone
- (770) 987-8400
- Enumerated
- Dec 25, 2006
- Record last updated
- Oct 17, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (770) 987-8494
- Medicaid ID
- 00687893G GA
- Medicare enrollment
- Enrolled (PECOS I20040323000961); accepts Medicare assignment
- Medical or professional school
- Morehouse School Of Medicine, 1992
- Entity
- Type 1 · individual
Also registered at 5900 Hillandale Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Clarice Bell, M.D.Family Medicine Physician1073533972
- Lawrence Brack, M.D.Ophthalmology Physician1265441315
- Yvette Leslie, M.D.Otolaryngology Physician1871500017
- Penelope McCown, NP-CFamily Nurse Practitioner1285031849
- Jada Moore-Ruffin, MDFamily Medicine Physician1447232103
- Sonya Poitier, M.D.Obstetrics & Gynecology Physician1760506117
Verify Wallace Duncan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersGeorgia Composite Medical Board
Search for license 041109Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.2 times the Medicare Part D claims of the average internal medicine physician in 2024
10,066 Medicare Part D claims for 555 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 848 claims were for opioids.
Most prescribed
- Oxycodone-Acetaminophen448 claims
- Amlodipine Besylate397 claims
- Atorvastatin Calcium322 claims
- Hydrochlorothiazide249 claims
- Alprazolam225 claims
- Losartan Potassium225 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.
Bills Medicare through one group practice
- Privia Medical Group OF Georgia LLCFayetteville, GA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
19 internal medicine physician records list a practice address in Lithonia
They are 19 of the 756 NPPES records with a practice address in Lithonia, and 3,911 internal medicine physician records in Georgia.
All 19 in Lithonia → All 3,911 in Georgia → Every provider in Lithonia →
Other internal medicine physician records in Georgia
- Karam A.alabed, MDRome, GA1871410969
- Muhammad Abbasi, M.D.Covington, GA1962496893
- Rahat AbbasiAugusta, GA1578057261
- Diane Abby Burr, D.O.Carrollton, GA1255374278
- Izzeldin Abdalla, MDFayetteville, GA1760731962
- Bsmah Abdalslam, M.DAustell, GA1598013492
- Eltigani Abdelhai, MDGainesville, GA1538233531
- Maged Abdelmalik, M.D.Folkston, GA1770558470
- Maher Abdulla, M.D.Warner Robins, GA1316997489
- Ibipo Abdurraheem-Salami, MDAthens, GA1962024323
Common questions
What is Wallace Duncan, M.D.'s NPI number?
Wallace Duncan, M.D.'s National Provider Identifier (NPI) is 1821153529, issued on Dec 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Wallace Duncan, M.D. located?
The NPPES record lists a practice address at 5900 Hillandale Dr, Lithonia, GA, 30058. Phone: (770) 987-8400. Providers update this record themselves, so call before visiting.
How can I verify Wallace Duncan, M.D.'s license?
NPPES lists Georgia license number 041109, 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 Wallace Duncan, M.D. prescribe under Medicare Part D?
In 2024, Wallace Duncan, M.D. had 10,066 Medicare Part D claims for 555 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.