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DR. JOSEPH LEE ROSWARSKI M.D.
NPI 1215223839
Internal Medicine - Hematology & Oncology in Washington, DC

Active since June 22, 2011PECOS EnrolledAccepts Medicare Assignment
83.48/100
CMS Quality Rating
3800 RESERVOIR RD NW, WASHINGTON, DC 20007(202) 444-2223 Get Directions Write a Review

NPPES record last updated: September 7, 2022. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 7, 2022, Mar 17, 2018, Aug 30, 2017 (3 updates tracked since 2017).

About Dr. Joseph Lee Roswarski M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOSEPH LEE ROSWARSKI M.D. (NPI 1215223839) is an individual hematology & oncology provider in Washington, District Of Columbia, licensed in District Of Columbia (MD210002210) and active in the NPI registry since June 2011. He is enrolled in Medicare PECOS, is affiliated with Medstar Saint Mary's Hospital, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1215223839
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameDR. JOSEPH LEE ROSWARSKICredential: M.D.
Location Address3800 RESERVOIR RD NWWashington, DC 20007-2113
Mailing Address1 Jarrett White RdTripler Army Medical Center, HI 96859-5001
Phone(202) 444-2223
Sole ProprietorNo
Medical School CMSIndiana University School Of MedicineGraduated 2011
Enumeration DateJune 22, 2011
Last NPPES UpdateSeptember 7, 20223 updates tracked since enumeration
NPPES CertifiedSeptember 7, 2022
✔ NPI 1215223839 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in DC · MD210002210
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal MedicineTaxonomy 207R00000X · License 0101254676 (VA)
3800 RESERVOIR RD NW, Washington, DC 20007
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1WRAMC, BLDG 2, Room 2G01, 6900 Georgia AvenueWashington, DC 20307-5001 · Phone (765) 586-8965
Location 21 Jarrett White RdTripler Army Medical Center, HI 96859-5001 · Phone (808) 433-6535

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Joseph Lee Roswarski M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID4789801358
PECOS Enrollment IDI20221019000913
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Joseph Roswarski reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Medstar Medical Group II LLC
Same address
Critical Care Medicine
3800 RESERVOIR RD NW
Washington, DC 20007
  • Reassigned Medicare billing, District of Columbia enrollment
  • 3,530 clinicians in this Medicare group
NPI 1205562816 (703) 558-1403
Regional Cancer Care Associates, L.L.C.
Same address
Hematology & Oncology
3800 RESERVOIR RD NW
Washington, DC 20007
  • Reassigned Medicare billing, District of Columbia enrollment
  • Medicare enrollment name: Regional Cancer Care Associates LLC
  • 17 clinicians in this Medicare group
NPI 1265870331 (202) 444-3736

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 6

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
249 services58 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
136 services51 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
51 services42 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
37 services26 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
33 services33 patients
Hospital discharge day management, 30 minutes or less 99238
Hospital discharge day management of 30 minutes or less includes finalizing your treatment, discussing your progress, and planning after-care at home. It ensures you're ready to leave the hospital and continue recovery safely.
26 services18 patients

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Medstar Saint Mary's Hospital

Acute Care Hospitals · Leonardtown, MD
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number210028
Location25500 Point Lookout RoadLeonardtown, MD 20650 · St. Marys County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

83.48/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality77.91
Promoting Interoperability100
Improvement Activities40
Cost54.97

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. KAUSTUBH SUBHASH YADWADKAR M.D.
Radiology (Diagnostic Radiology)
3800 RESERVOIR RD NW, CG201
WASHINGTON, DC 20007
District of Columbia (304) 206-7595
FRED MO MD
Orthopaedic Surgery (Orthopaedic Surgery of the Spine)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-8766
SEBLE YIRGA
Nurse Practitioner (Family)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-7265
ARLETTE THOMPSON-PILE
Physical Therapy Assistant
3800 RESERVOIR RD NW, PHYSICAL MEDICINE AND REHBAILITATION DEPARTMENT
WASHINGTON, DC 20007
District of Columbia (202) 444-3689
JENNA ELIZABETH HOROWITZ
Physician Assistant (Surgical)
3800 RESERVOIR RD NW, NEUROSURGERY DEPARTMENT
WASHINGTON, DC 20007
District of Columbia (202) 444-2000
HALEY SWANSON FOSTER M.D.
Radiology (Vascular & Interventional Radiology)
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-5022
CLAIRE DALBY MD
Student in an Organized Health Care Education/Training Program
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (202) 444-7106
MS. AMANDA JORDAN SUN PA-C
Physician Assistant
3800 RESERVOIR RD NW
WASHINGTON, DC 20007
District of Columbia (877) 772-6505

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Joseph Roswarski's NPI number?

The NPI number for Joseph Roswarski is 1215223839. It was assigned to this individual provider in the NPPES registry on June 22, 2011.

Where is Joseph Roswarski located?

Joseph Roswarski practices at 3800 Reservoir Rd NW, Washington, DC 20007. The listed phone number is (202) 444-2223.

What is Joseph Roswarski's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Joseph Roswarski enrolled in Medicare?

Yes. Joseph Roswarski is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Joseph Roswarski's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Joseph Roswarski reassigns Medicare benefits to 2 organizations: Medstar Medical Group II LLC (Washington, DC) and Regional Cancer Care Associates, L.L.C. (Washington, DC). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Joseph Roswarski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Joseph Roswarski affiliated with any hospitals?

According to CMS data, Joseph Roswarski is affiliated with Medstar Saint Mary's Hospital.

When was this NPI record last updated?

The NPPES record for Joseph Roswarski was last updated on September 7, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.