Hematologists and Oncologists in Maryland
Data updated monthly · Last refresh October 2026
320 Hematology & Oncology providers practice in Maryland, including 123 (38%) offering telehealth. The largest concentration is in Baltimore. Profiles include federal Open Payments records of money received from drug and device companies in 2025. Listings are drawn from federal public records and are not endorsements.
320providers
123telehealth
Baltimoretop city
Hematology & Oncology by city in Maryland
Choose a city to see providers there.
Hematology & Oncology providers in Maryland
Listed by city, largest first. Payment figures come from the federal Open Payments program, which requires drug and device companies to report what they pay physicians for consulting, speaking, meals, travel and royalties. A disclosed payment is a financial relationship, not evidence of wrongdoing, and many totals reflect a single meal. Figures cover calendar year 2025.
Dr. Victoria Giffi, MDHagerstown, MD · $293 in drug and device payments (2025) · Telehealth ·
(301) 665-4710 Dr. Yong Tang, M.D.Hagerstown, MD · $3,897 in drug and device payments (2025) ·
(301) 797-8279 Dr. Harminder Sethi, MDHyattsville, MD · $4,458 in drug and device payments (2025) · Telehealth ·
(301) 779-8800 Dr. Daniel Rosenblum, MDKensington, MD · No drug or device payments recorded (2025) ·
(301) 949-3378 Dr. Elizabeth Pfaffenroth, M.D.Largo, MD · No drug or device payments recorded (2025) ·
(301) 618-5500 Dr. Nitin Verma, MDLargo, MD · $17 in drug and device payments (2025) · Telehealth ·
(301) 618-5500 Dr. Isabella Martire, M.D. Dr. Eric Seifter, M.D.Lutherville, MD · $56 in drug and device payments (2025) ·
(410) 583-7122 Dr. Richard Huslig, M.D.Lutherville, MD · $543 in drug and device payments (2025) · Telehealth ·
(410) 494-9099 Dr. Behzad DoratotajOlney, MD · $140 in drug and device payments (2025) · Telehealth ·
(301) 774-8882 Dr. Joseph Reilly, M.D., PH.D. Dr. Robert Kreitman, MPOlney, MD · No drug or device payments recorded (2025) ·
(301) 774-6136 Dr. Timothy MeekerPotomac, MD · No drug or device payments recorded (2025) ·
(301) 442-6349 Dr. Arati Patel, MDPrince Frederick, MD · $404 in drug and device payments (2025) · Telehealth ·
(410) 414-9116 Dr. Bilal Ahmed, MDPrince Frederick, MD · $327 in drug and device payments (2025) · Telehealth ·
(410) 414-9116 Dr. Kenneth Abbott, M.D.Prince Frederick, MD · $132 in drug and device payments (2025) ·
(410) 414-9116 Dr. Barnett Kramer, M.D.Rockville, MD · No drug or device payments recorded (2025) ·
(301) 496-1508 Dr. Bindu George, MDRockville, MD · No drug or device payments recorded (2025) ·
(301) 827-9419 Dr. Ed Ashtar, M.D., F.A.C.P.Rockville, MD · No drug or device payments recorded (2025) ·
(240) 477-6620 Dr. Farah Zia, MDRockville, MD · $16 in drug and device payments (2025) ·
(301) 496-6986 Dr. George Sotos, M.D.Rockville, MD · $906 in drug and device payments (2025) · Telehealth ·
(301) 424-6231 Dr. James Brown, M.D.Rockville, MD · No drug or device payments recorded (2025) ·
(301) 424-6231 Dr. James Xu, M.D.Rockville, MD · $2,499 in drug and device payments (2025) · Telehealth ·
(240) 618-0275 Dr. John Wallmark, M.D.Rockville, MD · $2,478 in drug and device payments (2025) · Telehealth ·
(301) 424-6231 Dr. Joseph Haggerty, M.D.Rockville, MD · $37 in drug and device payments (2025) ·
(301) 424-6231 Dr. Leon Hwang, M.D.Rockville, MD · $17 in drug and device payments (2025) ·
(301) 548-5768 Dr. Lisa Arsenault, PARockville, MD · No drug or device payments recorded (2025) ·
(301) 424-6231 Dr. Manish Agrawal, M.D.Rockville, MD · No drug or device payments recorded (2025) ·
(301) 424-6231 Dr. Naoko Takebe, M.D. PHD.Rockville, MD · $477 in drug and device payments (2025) ·
(240) 276-6565 Dr. Nelson Kalil, M.D.Rockville, MD · $6,224 in drug and device payments (2025) ·
(240) 467-5888 Dr. Nicholas Farrell, MDRockville, MD · $1,095 in drug and device payments (2025) · Telehealth ·
(301) 424-6231 Dr. Peter Bross, M.D.Rockville, MD · $34 in drug and device payments (2025) ·
(301) 827-5378 Dr. Ronald Lieberman, M.D.Rockville, MD · No drug or device payments recorded (2025) ·
(301) 312-1445 Dr. Shannon O'connor, M.D.Rockville, MD · $566 in drug and device payments (2025) · Telehealth ·
(301) 424-6231 Dr. Yvonne Ottaviano, M.D.Rosedale, MD · $88 in drug and device payments (2025) ·
(443) 777-7147 Dr. Curtis Harris, M.D.Salisbury, MD · No drug or device payments recorded (2025) ·
(410) 831-3174 Dr. James Martin, M.D.Salisbury, MD · No drug or device payments recorded (2025) ·
(410) 749-1282 Dr. Janet Cooper, MDSalisbury, MD · $635 in drug and device payments (2025) ·
(410) 546-6400 Dr. Jimmy Taylor, M.D.Salisbury, MD · $180 in drug and device payments (2025) ·
(410) 749-1282 Dr. Joseph Grasso, M.D.Salisbury, MD · No drug or device payments recorded (2025) ·
(410) 749-1282 Dr. Justinian Ngaiza, MDSalisbury, MD · $340 in drug and device payments (2025) ·
(410) 749-1282 Dr. Karim Arnaout, M.D.Salisbury, MD · $507 in drug and device payments (2025) · Telehealth ·
(410) 749-1282 Dr. Marcel Odaimi, MDSalisbury, MD · No drug or device payments recorded (2025) ·
(410) 749-1282 Dr. Matthew Karpenko, DOSalisbury, MD · $117 in drug and device payments (2025) ·
(410) 546-6400 Dr. Md Salahuddin Siddiqui, MDSalisbury, MD · $372 in drug and device payments (2025) ·
(410) 543-7006 Dr. Michael Purtell, M.D.Salisbury, MD · No drug or device payments recorded (2025) ·
(410) 546-6400 Dr. Panpit Klug, M.D.Salisbury, MD · No drug or device payments recorded (2025) ·
(410) 749-1282 Dr. Walid El Ayass, M.DSalisbury, MD · $22,712 in drug and device payments (2025) · Telehealth ·
(410) 749-1282 Conditions Hematology & Oncology providers in Maryland commonly treat
Patients often search by condition rather than specialty. These are conditions typically managed by Hematology & Oncology providers. Individual practices vary, so confirm with the provider before booking.
- Breast cancer
- Lung cancer
- Lymphoma
- Leukemia
- Anemia
- Blood disorders
Common questions
How many Hematology & Oncology providers are in Maryland?There are 320 Hematology & Oncology providers with active NPI records practicing in Maryland, according to federal NPPES data refreshed monthly.
Do Hematology & Oncology providers in Maryland offer telehealth?Yes. 123 of the 320 Hematology & Oncology providers in Maryland (about 38%) report offering telehealth services in CMS data.
Which cities in Maryland have the most Hematology & Oncology providers?Baltimore (100), Bethesda (68), Rockville (18) have the highest concentration of Hematology & Oncology providers in Maryland.
How many Hematology & Oncology providers in Maryland received drug or device company payments?201 of 320 Hematology & Oncology providers in Maryland (63%) received at least one payment from a drug or device company in 2025, according to the federal Open Payments program.
What conditions do Hematology & Oncology providers in Maryland treat?Hematology & Oncology providers commonly treat breast cancer, lung cancer, lymphoma, leukemia, anemia and related conditions. Individual practices vary, so confirm with the provider before booking.
Where does this data come from?Provider counts and profiles come from the federal NPPES registry and CMS Doctors and Clinicians files. Payment figures come from the CMS Open Payments program for calendar year 2025. The directory refreshes monthly.
Do most Hematologists and Oncologists in Maryland work in independent practices or large health systems?Among 164 Hematologists and Oncologists in Maryland enrolled in Medicare, 12% bill through a solo or small practice with fewer than 10 clinicians, 30% through a mid-size group of 10 to 99, and 59% through a large group or health system with 100 or more clinicians, according to CMS enrollment records.
Which hospitals do Hematologists and Oncologists in Maryland work at?According to CMS facility affiliation records, the Maryland hospitals where the most Hematologists and Oncologists hold privileges are University of Maryland Medical Center in Baltimore; Johns Hopkins Hospital, the in Baltimore; Luminis Health Anne Arundel Medical Center, Inc. in Annapolis.
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