Mark Jason Roschewski, MD
Hematology (Internal Medicine) Physician · Washington, DC
Mark Jason Roschewski, MD is a hematology (internal medicine) physician with a practice address in Washington, District of Columbia, and NPI 1912991951, issued on Sep 6, 2005. Check the license on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark Jason Roschewski
- Credential
- MD
- Primary taxonomy
- Hematology (Internal Medicine) Physician 207RH0000X
- License number
- 5507 AK
Self-reported in NPPES; status is on the state search - Practice location
- 6900 Georgia Ave NW, Washington, DC 20307
- Phone
- (202) 782-4950
- Enumerated
- Sep 6, 2005
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20260108000378); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
7 nearest hematology (internal medicine) physician records → All 8 in District of Columbia → Look up another NPI →
Also registered at 6900 Georgia Ave NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Paulette Baldwin, LICSW, LCSW-CClinical Social Worker1568692283
- Lisa Banks-Williams, APRN,BCPsychiatric/Mental Health Registered Nurse1811054661
Verify Mark Jason Roschewski in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Memorial Hematology Lymphoma GroupNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Hematology (Internal Medicine) Physician providers in District of Columbia
There are 8 hematology (internal medicine) physician records in District of Columbia.
All 8 in District of Columbia → Every provider in Washington → Hematology (Internal Medicine) Physician nationwide →
The 7 hematology (internal medicine) physician records with the nearest ZIP codes
- Geraldine Schechter, M.D.Washington, DC 204221467554584
- Min-Fu Tsan, M.D., PH.D.Washington, DC 204221437301553
- Oswaldo Castro, M.D.Washington, DC 200591902022825
- Richard Kaufman, MDWashington, DC 200361568521714
- Thomas Havell, M.D.Washington, DC 200161396779310
- Jennifer Kanakry, M.D.Washington, DC 200071699978361
- Gustavo Rivero, M.D.Washington, DC 200071790736155
Common questions
What is Mark Jason Roschewski, MD's NPI number?
Mark Jason Roschewski, MD's National Provider Identifier (NPI) is 1912991951, issued on Sep 6, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mark Jason Roschewski, MD located?
The NPPES record lists a practice address at 6900 Georgia Ave NW, Washington, DC, 20307. Phone: (202) 782-4950. Providers update this record themselves, so call before visiting.
How can I verify Mark Jason Roschewski, MD's license?
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.
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.