William Hikaru Matsui, M.D.
Medical Oncology Internal Medicine
William Hikaru Matsui is a Medical Oncology Internal Medicine specialist based in Baltimore, MD with over 31 years of clinical experience. Offers virtual telehealth visits.
With over 31 years in internal medicine, William Hikaru Matsui, M.D. is a long-established medical oncology internal medicine specialist in Baltimore. He graduated from University of California, San Francisco School of Medicine in 1995 and has 31+ years of clinical experience. He regularly sees Medicare patients with hypertension, high cholesterol, and arthritis (per CMS claims data).
Older · 4851dNPPES updated 2013-02-12 · verify NPI on CMS · Verify license at Maryland Board of Physicians
What This Doctor Treats Most
Based on Medicare claims data — here's what patients commonly see this doctor for
Based on Medicare data, this doctor primarily manages Hypertension, High Cholesterol, and Arthritis.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↓ Fewer patients than average (-7%) — less common here
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↓ Fewer patients than average (-17%) — less common here
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-2%) — less common here
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↑ More patients than average (+1%) — a focus area for this doctor
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1995
University of California, San Francisco School of Medicine
31 years in practice
Senior practitioner
Medical oncologists diagnose and treat cancer using chemotherapy, immunotherapy, targeted therapy, and hormone therapy. They coordinate care with surgical oncologists and radiation oncologists for comprehensive cancer treatment.
Taxonomy: 207RX0202X
Education & Training
University of California, San Francisco School of Medicine (Class of 1995)
Mailing address
Po Box 64474, Baltimore, MD 21264-4474
Differs from practice location
Virtual Medical Oncology Care With William Hikaru Matsui
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with William Hikaru Matsui for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Baltimore required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.
Frequently Asked Questions
Common questions about William Hikaru Matsui
Dr. Matsui is listed as active in the NPI registry with telehealth listed in Baltimore, MD. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (410) 933-7400.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Physician Comparator. See Data Methodology.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact William Hikaru Matsui
Practice Location
600 N Wolfe St, Baltimore, MD 21287-0005
Mailing Address
Po Box 64474, Baltimore, MD 21264-4474
This is a provider directory. Contact the office directly to schedule appointments.
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