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Oncologists who accept Medicare in Rockville, MD
CMS lists 21 clinicians in this specialty with a practice address in Rockville. Accept Medicare assignment (the Medicare-approved amount as full payment): 21. Offer telehealth: 17.
Typical amounts Medicare approves in ZIP 20850 (2024 Medicare rates, the latest CMS has published): a new-patient visit $195, of which you pay about $49; a follow-up visit $114, of which you pay about $28 — the 20% coinsurance after the yearly Part B deductible. Clinicians who don't accept assignment can charge up to 15% more; with a Medicare Advantage plan, your plan's copay applies instead.
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Order: clinicians who accept assignment first, then by MIPS score (highest first), then by last name.
James X. Xu, MD
✓ Accepts Medicare assignmentMIPS score (2024): 100/100✓ TelehealthGraduated 2006 · University of Minnesota Medical SchoolMaleDrug and device company payments (2025): $2,499John M. Wallmark, MD
✓ Accepts Medicare assignmentMIPS score (2024): 97.5/100✓ TelehealthGraduated 1992 · Hahnemann University College of MedicineMaleDrug and device company payments (2025): $2,478Syed S. Mahmood, MD
✓ Accepts Medicare assignmentMIPS score (2024): 97.2/100✓ TelehealthGraduated 2010 · University of Florida College of MedicineMaleDrug and device company payments (2025): $1,052Nouman Asif, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.6/100✓ TelehealthGraduated 2010MaleDrug and device company payments (2025): $1,292Tejaswi Sastry, MD
✓ Accepts Medicare assignmentMIPS score (2024): 95.1/100✓ TelehealthGraduated 2000FemaleDrug and device company payments (2025): $1,080Shannon C. O'Connor, MD
✓ Accepts Medicare assignmentMIPS score (2024): 94.9/100✓ TelehealthGraduated 2005FemaleDrug and device company payments (2025): $566Shruti Murali, MD
✓ Accepts Medicare assignmentMIPS score (2024): 92.7/100✓ TelehealthGraduated 2019FemaleDrug and device company payments (2025): $1,364Nicholas J. Farrell, MD
✓ Accepts Medicare assignmentMIPS score (2024): 92.3/100✓ TelehealthGraduated 2000 · Virginia Commonwealth University, School of MedicineMaleDrug and device company payments (2025): $1,095Mohit Narang, MD
✓ Accepts Medicare assignmentMIPS score (2024): 91.4/100✓ TelehealthGraduated 1995MaleDrug and device company payments (2025): $290,679Nelson G. Kalil, MD
✓ Accepts Medicare assignmentMIPS score (2024): 91.4/100Graduated 1985MaleOther offices in Rockville: 1Drug and device company payments (2025): $6,224Paul A. Bannen, MD
✓ Accepts Medicare assignmentMIPS score (2024): 91.3/100Graduated 1996 · University of Missouri, Columbia School of MedicineMaleDrug and device company payments (2025): $260Andrew S. Mener, MD
✓ Accepts Medicare assignmentMIPS score (2024): 90.3/100✓ TelehealthGraduated 2011 · George Washington University School of MedicineMaleDrug and device company payments (2025): $1,306Ari Fishman, MD
✓ Accepts Medicare assignmentMIPS score (2024): 89.1/100✓ TelehealthGraduated 1995 · Albert Einstein College of Medicine of Yeshiva UniversityMaleDrug and device company payments (2025): $273George Sotos, MD
✓ Accepts Medicare assignmentMIPS score (2024): 87.7/100✓ TelehealthGraduated 1988 · Virginia Commonwealth University, School of MedicineMaleDrug and device company payments (2025): $906Chitra D. Rajagopal, MD
✓ Accepts Medicare assignmentMIPS score (2024): 87.4/100✓ TelehealthGraduated 1985FemaleDrug and device company payments (2025): $1,863Joseph M. Haggerty, MD
✓ Accepts Medicare assignmentMIPS score (2024): 85.8/100Graduated 1982 · Virginia Commonwealth University, School of MedicineMaleDrug and device company payments (2025): $37Sarah E. Regan, MD
✓ Accepts Medicare assignmentMIPS score (2024): 85.8/100✓ TelehealthGraduated 2016 · University of Maryland School of MedicineFemaleDrug and device company payments (2025): $1,211Holly Dushkin, MD
✓ Accepts Medicare assignmentGraduated 2001 · Temple University School of MedicineFemaleDrug and device company payments (2025): $1,672Shreya Sinha, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 2013FemaleDrug and device company payments (2025): $1,108Ram Trehan, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1979MaleDrug and device company payments (2025): $2,271Dongmei Wang, MD
✓ Accepts Medicare assignment✓ TelehealthGraduated 1993Female
Before you book
This list comes from Medicare's enrollment records, not from reviews. Call the office to confirm the clinician is taking new Medicare patients. With Original Medicare, a clinician who accepts assignment can only charge you the Medicare deductible and coinsurance; one who doesn't may charge up to 15% more than the Medicare-approved amount. If you have a Medicare Advantage plan, check that the clinician is in the plan's network.
The MIPS final score (0–100) comes from Medicare's Merit-based Incentive Payment System for 2024. It combines quality measures, cost, improvement activities and use of certified health records, and it sets a payment adjustment. Clinicians who report as a group share the group's score. It is not a patient rating, and many clinicians have no published score.
Payments from drug and medical device companies come from CMS Open Payments (2025 general payments: meals, travel, consulting and speaking fees, gifts and similar), summed for each clinician. Receiving payments is legal and common and does not mean a clinician did anything wrong.
Other specialists in Rockville
- Primary care doctors359
- Nurse practitioners376
- Cardiologists51
- Dermatologists31
- Orthopedic surgeons18
- Neurologists26
- Gastroenterologists65
- Ophthalmologists44
- Optometrists29
- Podiatrists15
- Urologists16
- Pulmonologists9
- Nephrologists12
- Endocrinologists10
- Rheumatologists19
- ENT doctors11
- Psychiatrists47
- Psychologists37
- Therapists and counselors181
- Physical therapists116
- Occupational therapists17
- Speech therapists5
- Audiologists25
- Chiropractors19
- Gynecologists82
- General surgeons12
- Vascular surgeons5
- Pain management doctors9
- Physiatrists25
- Allergists14
- Sleep medicine doctors3
- Dietitians9
- Neurosurgeons11
- Infectious disease doctors7
Other care in Rockville
Hospitals · Nursing homes · Dialysis centers · Home health agencies · Hospices
Nearby cities
Enrollment, addresses and scores are as reported to CMS and can change. This is not a list of in-network providers for any Medicare Advantage plan, and it is not medical advice. Source: CMS Provider Data Catalog — Doctors and Clinicians National Downloadable File, Clinician MIPS Performance 2024 and Facility Affiliation Data (released Oct 2, 2026).