Marshall S Katz, M.D.
Cardiovascular Disease Internal Medicine
Marshall S Katz is a Cardiovascular Disease Internal Medicine specialist based in Boston, MA with over 35 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Marshall S Katz, M.D. practices as part of a group cardiologist practice in Boston, MA. A Boston University School of Medicine graduate since 1991, he brings 35+ years of experience. CMS Medicare data shows his patients commonly have hypertension, high cholesterol, and ischemic_heart.
Older · 5359dNPPES updated 2011-09-23 · verify NPI on CMS · Verify license at Massachusetts Board of Registration in Medicine
Contact & Location
Practice Location
133 Brookline Ave Harvard Vanguard Medical Associates, Boston, MA 02215-3904
How Does This Doctor Compare?
Generic Rx
↑ Higher = better78.6%
Massachusetts avg: 81.9 · US avg: 82.8
⚠ Lower than most doctors nationally(-4.2 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
1,858
Unique beneficiaries
High volumePrescription Recipients
871
Patients prescribed
Prescriptions Written
7,277
Total claims
Total Medicare drug cost: $1.88M
Percentile rankings compared against 1,606 reporting peers in Massachusetts.
Data Note: Sourced from CMS Medicare Provider Utilization & Payment Data. Percentile rankings compare this provider against all peers with reported data in the same state. Updated annually to reflect the latest federal reporting cycle.
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 Ischemic Heart Disease.
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+5%) — a focus area for this doctor
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
Reduced blood flow to the heart muscle, commonly known as coronary artery disease
US avg: 31.7%↑ More patients than average (+7%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-10%) — less common here
An irregular, often rapid heartbeat that increases the risk of stroke
US avg: 22%↑ More patients than average (+15%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↑ More patients than average (+2%) — a focus area for this doctor
The heart cannot pump blood efficiently enough to meet the body's needs
US avg: 22.5%↑ More patients than average (+4%) — a focus area for this doctor
Conditions affecting emotional state, including depression and bipolar disorder
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$251 received from industry
2 transactions reported in 2018 ·Low tier
Payments include consulting fees, speaking honoraria, food & beverage, travel, research support, and ownership interests from drug and medical device manufacturers. Disclosure is required by the federal Physician Payments Sunshine Act. These payments do not necessarily indicate conflicts of interest. National median: $338 across 136 000 tracked providers.
Tiers — Low: under $500 · Moderate: $500-5 000 · High: $5 000-25 000 · Very High: $25 000+. Source: CMS Open Payments 2018, attributed to Marshall S Katz's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1991
Boston University Chobanian & Avedisian School of Medicine
35 years in practice
Senior practitioner
Cardiologists specialize in diagnosing and treating heart and blood vessel conditions including coronary artery disease, heart failure, arrhythmias, valve disorders, and hypertension. They perform diagnostic procedures such as echocardiograms, stress tests, and cardiac catheterization.
Taxonomy: 207RC0000X
Education & Training
Boston University School of Medicine (Class of 1991)
Virtual Cardiovascular Disease Care With Marshall S Katz
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Marshall S Katz for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to Boston required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Marshall S Katz
Dr. Katz is listed as active in the NPI registry with telehealth listed in Boston, MA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (617) 421-6050.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2018 · CMS Physician Comparator. See Data Methodology.
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Contact Marshall S Katz
Practice Location
133 Brookline Ave Harvard Vanguard Medical Associates, Boston, MA 02215-3904
Mailing Address
133 Brookline Ave Harvard Vanguard Medical Associates, Boston, MA 02215-3904
This is a provider directory. Contact the office directly to schedule appointments.
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