Tonja Lourene Gadsden, MD
Internal Medicine Physician · Washington, DC
Tonja Lourene Gadsden, MD is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1689783102, issued on Aug 29, 2006. Check the license (District of Columbia MD20448, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Tonja Lourene Gadsden
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- MD20448 DC
D0043699 MD
Self-reported in NPPES; status is on the state search - Practice location
- 2041 Georgia Ave NW, Washington, DC 20060
- Phone
- (202) 865-3290
- Enumerated
- Aug 29, 2006
- Record last updated
- Apr 2, 2025
- Fax
- (202) 865-3833
- Medicaid IDs
- 347231100 MD
010015359 VA
029853700 DC - Medicare enrollment
- Enrolled (PECOS I20040129000808); accepts Medicare assignment
- Medical or professional school
- Howard University College Of Medicine, 1989
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Also registered at 2041 Georgia Ave NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Alaa Abdelsamad, MDStudent in an Organized Health Care Education/Training Program1942054051
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Verify Tonja Lourene Gadsden in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD20448Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,174 Medicare Part D claims for 133 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 21 claims were for opioids.
Most prescribed
- Amlodipine Besylate124 claims
- Atorvastatin Calcium81 claims
- Metoprolol Succinate62 claims
- Metformin Hcl53 claims
- Hydrochlorothiazide49 claims
- Albuterol Sulfate Hfa37 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: $844.10
27 payments; by number, the most common kind was food and beverage; the largest payer was Sanofi-Aventis U.S. LLC. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Howard UniversityWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tonja Lourene Gadsden among 901 internal medicine physician records in District of Columbia
Tonja Lourene Gadsden, MD is one of 901 internal medicine physician records with a practice address in District of Columbia. 73% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 67% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1989 · median 2008 among the 513 with a school on file
- Record last updated2025 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
891 internal medicine physician records list a practice address in Washington
They are 891 of the 45,857 NPPES records with a practice address in Washington, and 901 internal medicine physician records in District of Columbia.
All 901 in District of Columbia → Every provider in Washington → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- R Adams, MDWashington, DC 200601447369038
- Nicholas Azinge, M.D.,FACP.Washington, DC 200601265491070
- Ricardo Caldera, MDWashington, DC 200601053420646
- Christopher Degannes, MDWashington, DC 200601518076116
- Anand Deonarine, MDWashington, DC 200601689615809
- Lisa Fitzpatrick, MD, MPHWashington, DC 200601588664056
- Charles Howell, M.D.Washington, DC 200601275580227
- Jean Linzau, MDWashington, DC 200601235292541
Common questions
What is Tonja Lourene Gadsden, MD's NPI number?
Tonja Lourene Gadsden, MD's National Provider Identifier (NPI) is 1689783102, issued on Aug 29, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tonja Lourene Gadsden, MD located?
The NPPES record lists a practice address at 2041 Georgia Ave NW, Washington, DC, 20060. Phone: (202) 865-3290. Providers update this record themselves, so call before visiting.
How can I verify Tonja Lourene Gadsden, MD's license?
NPPES lists District of Columbia license number MD20448, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tonja Lourene Gadsden, MD prescribe under Medicare Part D?
In 2024, Tonja Lourene Gadsden, MD had 1,174 Medicare Part D claims for 133 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.