Seth Mcclennen, MD

Clinical Cardiac Electrophysiology

Internal Medicine

Seth Mcclennen is a Clinical Cardiac Electrophysiology specialist based in South Weymouth, MA with over 29 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

Also practices: CARDIOVASCULAR DISEASE (CARDIOLOGY)

(781) 952-1200South Weymouth, MA
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

With over 29 years in internal medicine, Seth Mcclennen, MD is a long-established clinical cardiac electrophysiology specialist in South Weymouth. He graduated from Geisel School of Medicine at Dartmouth in 1997 and has 29+ years of clinical experience. He regularly sees Medicare patients with hypertension, high cholesterol, and afib (per CMS claims data).

1 of 29 Internal Medicine providers in MASee all Internal Medicine in South Weymouth29+ years experienceNPI since 2005

Older · 4455dNPPES updated 2014-03-13 · verify NPI on CMS · Verify license at Massachusetts Board of Registration in Medicine

Contact & Location

Practice Location

541 Main St Suite 400, South Weymouth, MA 02190-1868

Fax: (781) 340-1610
CMS Clinical Data

How Does This Doctor Compare?

Generic Rx

↑ Higher = better

77.5%

Massachusetts avg: 81.9 · US avg: 82.8

Lower than most doctors nationally(-5.3 pts)

How often this doctor prescribes affordable generic drugs instead of expensive brand-name ones.

Medicare Patients

3,088

Unique beneficiaries

Very high volume

Prescription Recipients

1,213

Patients prescribed

Prescriptions Written

8,431

Total claims

Total Medicare drug cost: $2.71M

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.

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 Hypertension, High Cholesterol, and Atrial Fibrillation.

Hypertension
Higher than avg (+5%)75%

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

High Cholesterol
Higher than avg (+5%)75%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↑ More patients than average (+5%) — a focus area for this doctor

Atrial Fibrillation
Higher than avg (+29%)51%

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

US avg: 22%

↑ More patients than average (+29%) — a focus area for this doctor

Arthritis
Higher than avg (+1%)50%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↑ More patients than average (+1%) — a focus area for this doctor

Ischemic Heart Disease
Higher than avg (+8%)40%

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

US avg: 31.7%

↑ More patients than average (+8%) — a focus area for this doctor

Heart Failure
Higher than avg (+17%)39%

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

Chronic Kidney Disease
Higher than avg (+5%)35%

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

US avg: 29.6%

↑ More patients than average (+5%) — a focus area for this doctor

Anxiety Disorders
34%

Excessive worry or fear that interferes with daily life

US avg: 34.1%
GeneralBehavioralNational avg

Percentage of this provider's Medicare patients diagnosed with each condition. Source: CMS Utilization Data.

Industry Payment Transparency

$207 received from industry

2 transactions reported in 2024 ·Low tier

View on CMS Open Payments →

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 Seth Mcclennen's NPI.

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Background & Specialty

Education, training, and specialty classification from CMS NPPES and Medicare records.

Career Journey
  1. Graduated medical school · 1997

    Geisel School of Medicine at Dartmouth

  2. 29 years in practice

    Experienced

A field of special interest within the subspecialty of cardiovascular disease, specialty of Internal Medicine, which involves intricate technical procedures to evaluate heart rhythms and determine appropriate treatment for them.

Taxonomy: 207RC0001X

Education & Training

Geisel School of Medicine at Dartmouth (Class of 1997)

Virtual Clinical Cardiac Electrophysiology Care With Seth Mcclennen

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

Schedule a virtual visit with Seth Mcclennen for blood pressure monitoring, cholesterol management, follow-up consultations — no travel to South Weymouth 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 Seth Mcclennen

NPI records show Dr. Mcclennen as active with telehealth listed in South Weymouth, MA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (781) 952-1200.

Verified across 5 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Medicare Part D · CMS Open Payments 2024 · 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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