Clifford John Sewell, M.D.

Internal Medicine

Clifford John Sewell is an Internal Medicine specialist based in Danville, CA with over 32 years of clinical experience. Offers virtual telehealth visits.

(925) 855-3780Danville, CA
Telehealth Available
NPI Active per CMS — Q2 2026

Clifford John Sewell, M.D. has practiced internal medicine for 32+ years, working in independent practice. He graduated from Virginia Commonwealth University, School of Medicine in 1994 and has 32+ years of clinical experience. Among his Medicare patients, common conditions include hypertension, high cholesterol, and arthritis (per CMS data).

At a glance

  • Uses generic medications more than 37% of reporting doctors in California
  • Virtual visits available — no app or travel required
1 of 3,565 Internal Medicine providers in CASee all Internal Medicine in Danville32+ years experienceNPI since 2007

Older · 2060dNPPES updated 2020-10-01 · verify NPI on CMS · Verify license at Medical Board of California

Contact & Location

Practice Location

400 El Cerro Blvd Ste 102, Danville, CA 94526-1731

Fax: (925) 855-3785
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 Arthritis.

Hypertension
Lower than avg (-3%)67%

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

US avg: 70.2%

↓ Fewer patients than average (-3%) — less common here

High Cholesterol
Lower than avg (-10%)60%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↓ Fewer patients than average (-10%) — less common here

Arthritis
Higher than avg (+3%)52%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

↑ More patients than average (+3%) — a focus area for this doctor

Atrial Fibrillation
Higher than avg (+5%)27%

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

US avg: 22%

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

Cancer
Higher than avg (+2%)23%

Diseases involving abnormal cell growth with potential to spread to other body parts

US avg: 20.8%

↑ More patients than average (+2%) — a focus area for this doctor

Ischemic Heart Disease
Lower than avg (-10%)22%

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

US avg: 31.7%

↓ Fewer patients than average (-10%) — less common here

Chronic Kidney Disease
Lower than avg (-9%)21%

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

US avg: 29.6%

↓ Fewer patients than average (-9%) — less common here

Heart Failure
Lower than avg (-2%)20%

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

US avg: 22.5%

↓ Fewer patients than average (-2%) — less common here

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 · 1994

    Virginia Commonwealth University, School of Medicine

  2. Board certified · Sep 30, 2020

    Self-reported via NPPES

  3. 32 years in practice

    Senior practitioner

Internal MedicineAllopathic & Osteopathic Physicians

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Taxonomy: 207R00000X

Education & Training

Virginia Commonwealth University, School of Medicine (Class of 1994)

Virtual Internal Medicine Care With Clifford John Sewell

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

Schedule a virtual visit with Clifford John Sewell for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Danville required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes.

Frequently Asked Questions

Common questions about Clifford John Sewell

Dr. Sewell is listed as active in the NPI registry with telehealth listed in Danville, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (925) 855-3780.

Verified across 4 federal data sources

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.

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