Thomas Obisesan, MD
Geriatric Medicine (Internal Medicine) Physician · Washington, DC
Thomas Obisesan, MD is a geriatric medicine (internal medicine) physician with a practice address in Washington, District of Columbia, and NPI 1295894426, issued on Dec 6, 2006. Check the license (District of Columbia MD19950, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Thomas Obisesan
- Credential
- MD
- Primary taxonomy
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- MD19950 DC
Self-reported in NPPES; status is on the state search - Practice location
- 2041 Georgia Ave NW, Washington, DC 20060
- Phone
- (202) 865-3290
- Enumerated
- Dec 6, 2006
- Record last updated
- Nov 22, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (202) 865-3833
- Medicaid IDs
- 758141601 MD
010015413 VA
023971400 DC - Medicare enrollment
- Enrolled (PECOS I20040224000142); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 22 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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Verify Thomas Obisesan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD19950Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
41% fewer Medicare Part D claims than the average geriatric medicine (internal medicine) physician in 2024
2,511 Medicare Part D claims for 113 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.
Most prescribed
- Atorvastatin Calcium193 claims
- Mirtazapine180 claims
- Divalproex Sodium123 claims
- Eliquis119 claims
- Levetiracetam111 claims
- Lisinopril-Hydrochlorothiazide106 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: $21,014.23
28 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 1,004 providers of this specialty with any payment received $1,720.82 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).
Thomas Obisesan among 22 geriatric medicine (internal medicine) physician records in District of Columbia
Thomas Obisesan, MD is one of 22 geriatric medicine (internal medicine) physician records with a practice address in District of Columbia. 77% 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 0% of them.
- NPI issued2006 · 0% of these records are older, 50% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 59% of these records are
- Graduated1986 · median 1999 among the 13 with a school on file
- Record last updated2019 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0300X 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).
Geriatric Medicine (Internal Medicine) Physician providers in District of Columbia
There are 22 geriatric medicine (internal medicine) physician records in District of Columbia.
All 22 in District of Columbia → Every provider in Washington → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Laila Alamgir, MDWashington, DC 200601689740086
- Elizabeth Cobbs, MDWashington, DC 200371669431680
- James Cooper, MDWashington, DC 200371699734525
- Robert Jayes, M.D.Washington, DC 200371316016504
- Mikhail Kogan, MDWashington, DC 200371700051232
- Nickie Lepcha, M.D.Washington, DC 200371437184348
- Tahira Lodhi, M.D.Washington, DC 200371407051840
- Christina Prather, MDWashington, DC 200371104144534
Common questions
What is Thomas Obisesan, MD's NPI number?
Thomas Obisesan, MD's National Provider Identifier (NPI) is 1295894426, issued on Dec 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas Obisesan, 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 Thomas Obisesan, MD's license?
NPPES lists District of Columbia license number MD19950, 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 Thomas Obisesan, MD prescribe under Medicare Part D?
In 2024, Thomas Obisesan, MD had 2,511 Medicare Part D claims for 113 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.