Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Joseph Lee Roswarski, MD

Individual provider Internal Medicine Physician · NPI 1215223839

Dr. Joseph Lee Roswarski, MD practises Medical Oncology in Washington, District of Columbia. Graduated from Indiana University School of Medicine in 2011, 15 years ago. Practices with Medstar Medical Group II LLC, a 3,717-clinician group, works from 3 locations, accepts Medicare assignment and offers telehealth. Licensed in District of Columbia and Virginia.

Years since qualifying
15
Trained at
Indiana University School of Medicine
Licensed in
DC, VA
In the registry since
2011
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3800 Reservoir Rd NW
Washington, DC 20007-2113
Phone: (202) 444-2223
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Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • Wramc, Bldg 2, Room 2g01, Washington, DC 20307-5001 — (765) 586-8965
  • 1 Jarrett White Rd, Tripler Army Medical Center, HI 96859-5001 — (808) 433-6535

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence MD210002210 (DC)
Internal Medicine Physician Taxonomy 207R00000X · Licence 0101254676 (VA)

Record details

NPI number1215223839
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 22, 2011
Last updated in NPPESSeptember 7, 2022
Certification dateSeptember 7, 2022

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyMEDICAL ONCOLOGY
Also practisesHEMATOLOGY, RADIATION ONCOLOGY
Medical schoolINDIANA UNIVERSITY SCHOOL OF MEDICINE
Graduated 2011 (15 years in practice)
Group practice Medstar Medical Group Ii Llc — 3717 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients132
Services billed 708 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $4,090 2 payments
Food and Beverage $1,581 39 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Medstar Medical Group II LLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 3717 clinicians in the practice; 12 are shown here.

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