Brian Stewart Lyle, M.D.

Cardiovascular Disease Internal Medicine

Internal Medicine

Brian Stewart Lyle is a Cardiovascular Disease Internal Medicine specialist based in Boulder, CO with over 24 years of clinical experience. Offers virtual telehealth visits.

(303) 442-2395Boulder, CO
Telehealth Available
NPI Active per CMS — Q2 2026

Brian Stewart Lyle, M.D. has practiced internal medicine for 24+ years, working in group practice. Trained at Hahneman Medical College of the Pacific (class of 2002), he has been practicing for over 24 years. Among his Medicare patients, common conditions include high cholesterol, hypertension, and ischemic_heart (per CMS data).

1 of 76 Internal Medicine providers in COSee all Internal Medicine in Boulder24+ years experienceNPI since 2007

Older · 2839dNPPES updated 2018-08-14 · verify NPI on CMS · Verify license at Colorado Medical Board

Contact & Location

Practice Location

4743 Arapahoe Ave Ste 201, Boulder, CO 80303

Fax: (303) 442-1073
Patient Condition Panel

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.

High Cholesterol
74%

Elevated cholesterol or triglycerides that increase heart disease risk

Hypertension
72%

High blood pressure — a leading risk factor for heart disease and stroke

Ischemic Heart Disease
57%

Reduced blood flow to the heart muscle, commonly known as coronary artery disease

Arthritis
49%

Joint inflammation causing pain, swelling, and stiffness

Atrial Fibrillation
38%

An irregular, often rapid heartbeat that increases the risk of stroke

Heart Failure
26%

The heart cannot pump blood efficiently enough to meet the body's needs

Mood Disorders
22%

Conditions affecting emotional state, including depression and bipolar disorder

Chronic Kidney Disease
20%

Gradual loss of kidney function over time, often linked to diabetes or hypertension

GeneralBehavioralNational avg

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.

Career Journey
  1. Graduated medical school · 2002

    Hahneman Medical College of the Pacific

  2. 24 years in practice

    Experienced

Internal MedicineCardiovascular Disease in BoulderAllopathic & Osteopathic Physicians

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

Hahneman Medical College of the Pacific (Class of 2002)

Practice Footprint

Mailing address

5450 Western Ave, Boulder, CO 80301-2709

Differs from practice location

Virtual Cardiovascular Disease Care With Brian Stewart Lyle

NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.

Schedule a virtual visit with Brian Stewart Lyle 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.

Frequently Asked Questions

Common questions about Brian Stewart Lyle

Dr. Lyle 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.

Verified across 3 federal data sources

Sourced from CMS NPPES · OIG LEIE · 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.

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