Marsden Scott Blois, MD
Cardiovascular Disease Internal Medicine
Marsden Scott Blois is a Cardiovascular Disease Internal Medicine specialist based in Boulder, CO with over 33 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Also practices: ADVANCED HEART FAILURE AND TRANSPLANT CARDIOLOGY
Marsden Scott Blois, MD has practiced internal medicine for 33+ years, working in group practice. A Baylor College of Medicine graduate since 1993, he brings 33+ years of experience. CMS Medicare data shows his patients commonly have high cholesterol, hypertension, and ischemic_heart.
Older · 107dNPPES updated 2026-02-06 · verify NPI on CMS · Verify license at Colorado Medical Board
Contact & Location
Practice Location
4743 Arapahoe Ave Ste 201, Boulder, CO 80303-1113
How Does This Doctor Compare?
Generic Rx
↑ Higher = better78.7%
Colorado avg: 81.7 · US avg: 82.8
⚠ Lower than most doctors nationally(-4.1 pts)
How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.
Medicare Patients
1,074
Unique beneficiaries
High volumePrescription Recipients
532
Patients prescribed
Prescriptions Written
4,665
Total claims
Total Medicare drug cost: $1.53M
Percentile rankings compared against 1,617 reporting peers in Colorado.
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 High Cholesterol, Hypertension, and Ischemic Heart Disease.
Elevated cholesterol or triglycerides that increase heart disease risk
US avg: 70.4%↑ More patients than average (+5%) — a focus area for this doctor
High blood pressure — a leading risk factor for heart disease and stroke
US avg: 70.2%↑ More patients than average (+2%) — 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 (+21%) — a focus area for this doctor
Joint inflammation causing pain, swelling, and stiffness
US avg: 49.3%↓ Fewer patients than average (-2%) — less common here
An irregular, often rapid heartbeat that increases the risk of stroke
US avg: 22%↑ More patients than average (+19%) — 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 (+17%) — a focus area for this doctor
Gradual loss of kidney function over time, often linked to diabetes or hypertension
US avg: 29.6%↓ Fewer patients than average (-6%) — less common here
Conditions affecting emotional state, including depression and bipolar disorder
Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.
$14 received from industry
1 transaction reported in 2024 ·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 2024, attributed to Marsden Scott Blois's NPI.
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Graduated medical school · 1993
Baylor College of Medicine
Board certified · Feb 5, 2026
Self-reported via NPPES
33 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
Baylor College of Medicine (Class of 1993)
Mailing address
1760 E Ken Pratt Blvd Ste 205, Longmont, CO 80504-5311
Differs from practice location
Primary hospital affiliation: Acute Care Hospitals
CMS Certification Number: 390335
View hospital on Medicare Care CompareVirtual Cardiovascular Disease Care With Marsden Scott Blois
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Marsden Scott Blois for cholesterol management, blood pressure monitoring, follow-up consultations — no travel to Boulder 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 Marsden Scott Blois
Dr. Blois is listed as active in the NPI registry with telehealth listed in Boulder, CO. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (303) 442-2395.
Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · CMS Physician Comparator. See Data Methodology.
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Contact Marsden Scott Blois
Practice Location
4743 Arapahoe Ave Ste 201, Boulder, CO 80303-1113
Mailing Address
1760 E Ken Pratt Blvd Ste 205, Longmont, CO 80504-5311
This is a provider directory. Contact the office directly to schedule appointments.
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