Stephen Andrew Sebastian, MD
Internal Medicine Physician · Washington, DC
Stephen Andrew Sebastian, MD is an internal medicine physician with a practice address in Washington, District of Columbia, and NPI 1386206449, issued on Jun 28, 2019. Check the license (District of Columbia MD60004641, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Stephen Andrew Sebastian
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- MD60004641 DC
Self-reported in NPPES; status is on the state search - Practice location
- 110 Irving Street NW, Washington, DC 20010
- Phone
- (202) 877-8278
- Enumerated
- Jun 28, 2019
- Record last updated
- Sep 2, 2025
- Medicare enrollment
- Enrolled (PECOS I20251125003868); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 901 in District of Columbia → Look up another NPI →
Also registered at 110 Irving Street NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Stephen Andrew Sebastian in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD60004641Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,102 Medicare Part D claims for 290 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 21 claims were for opioids.
Most prescribed
- Furosemide65 claims
- Atorvastatin Calcium61 claims
- Pantoprazole Sodium54 claims
- Prednisone43 claims
- Ondansetron Odt42 claims
- Losartan Potassium37 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): 94.1 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
- Medstar Medical Group II LLCWashington, DC
- Riverside Physician Services IncOnancock, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen Andrew Sebastian among 901 internal medicine physician records in District of Columbia
Stephen Andrew Sebastian, 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 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 11% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2018 · 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
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- Lawrence D'Angelo, MDWashington, DC 200101194785311
- Godwin Darko, MD, MPHWashington, DC 200101255384269
- Jessica Fields, MDWashington, DC 200101417903162
- Gerard Harris, M.D.Washington, DC 200101679542724
- Shameem Huq, MDWashington, DC 200101275587784
- Francisco King, M.D.Washington, DC 200101568430064
Common questions
What is Stephen Andrew Sebastian, MD's NPI number?
Stephen Andrew Sebastian, MD's National Provider Identifier (NPI) is 1386206449, issued on Jun 28, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Stephen Andrew Sebastian, MD located?
The NPPES record lists a practice address at 110 Irving Street NW, Washington, DC, 20010. Phone: (202) 877-8278. Providers update this record themselves, so call before visiting.
How can I verify Stephen Andrew Sebastian, MD's license?
NPPES lists District of Columbia license number MD60004641, 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 Stephen Andrew Sebastian, MD prescribe under Medicare Part D?
In 2024, Stephen Andrew Sebastian, MD had 1,102 Medicare Part D claims for 290 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Stephen Andrew Sebastian, MD's MIPS final score?
The 2023 MIPS final score is 94.1 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.