Stephen Sebastian, MD
NPI 1386206449 · Internal Medicine Physician · Washington, DC
Enrolled with Medicare as Practitioner - Hospitalist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephen Sebastian, MD is a Internal Medicine Physician provider in Washington, DC (NPI 1386206449).
Provider details
- NPI number
- 1386206449
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- MD60004641 (DC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
735 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 269 | $74 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 239 | $108 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 128 | $163 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 82 | $110 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 17 | $47 |
Typical Medicare-allowed amounts for these services range $47–$163 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Furosemide | 65 | 27 |
| Atorvastatin Calcium | 61 | 30 |
| Pantoprazole Sodium | 54 | 30 |
| Prednisone | 43 | 38 |
| Ondansetronbrand: Ondansetron Odt | 42 | 42 |
| Losartan Potassium | 37 | 18 |
| Apixabanbrand: Eliquis |
Practice location
Mailing address
Registry dates
- Enumerated
- 2019-06-28
- Last updated
- 2025-09-02
- Certified
- 2025-09-02
Frequently asked questions
- What is Stephen Sebastian's NPI number?
- Stephen Sebastian's National Provider Identifier (NPI) is 1386206449, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephen Sebastian's specialty?
- Stephen Sebastian is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Stephen Sebastian located?
- Stephen Sebastian's practice location on file with NPPES is 110 Irving Street Nw, Washington, DC 20010.
- What is Stephen Sebastian's phone number?
- The practice phone number listed in the NPPES registry for Stephen Sebastian is (202) 877-8278.
- Does Stephen Sebastian accept Medicare?
- Stephen Sebastian is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephen Sebastian's NPI active?
- Yes — Stephen Sebastian's NPI (1386206449) is active in the NPPES registry as of the last update on 2025-09-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.