Charles Keith Cofas, M.D.

Internal Medicine

Charles Keith Cofas is an Internal Medicine specialist based in Klamath Falls, OR with over 24 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.

(541) 882-3818Klamath Falls, OR
Telehealth Available
NPI Active per CMS — Q2 2026|Medicare Enrolled|Order & Refer

Charles Keith Cofas, M.D. has been part of the Klamath Falls medical community since 2006 in group practice. A University of Texas Medical Branch at Galveston graduate since 2002, he brings 24+ years of experience. He regularly sees Medicare patients with hypertension, high cholesterol, and arthritis (per CMS claims data).

At a glance

  • Prescribes opioids less than 61% of reporting doctors in Oregon
  • Uses generic medications more than 70% of reporting doctors in Oregon
  • Virtual visits available — no app or travel required
1 of 339 Internal Medicine providers in ORSee all Internal Medicine in Klamath Falls24+ years experienceNPI since 2006

Older · 5534dNPPES updated 2011-03-29 · verify NPI on CMS · Verify license at Oregon Medical Board

Contact & Location

Practice Location

2640 Biehn St Ste 4, Klamath Falls, OR 97601-1181

Fax: (541) 882-9800
CMS Clinical Data

How Does This Doctor Compare?

Based on Medicare data, this doctor prescribes opioid pain medications conservatively, favors affordable generic drugs over brand-name ones.

Opioid Rx

↓ Lower = better

0.73%

Oregon avg: 7 · US avg: 5.1

Higher than most doctors nationally(-4.4 pts)

Typical range among reporting doctors in Oregon

0.73% of this doctor's prescriptions are opioid pain medications. Lower means more cautious prescribing.

Generic Rx

↑ Higher = better

90.7%

Oregon avg: 83.7 · US avg: 82.8

Higher than most doctors nationally(+7.9 pts)

Better than 70% of reporting doctors in Oregon

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

Medicare Patients

1,351

Unique beneficiaries

High volume

Prescription Recipients

373

Patients prescribed

Prescriptions Written

4,766

Total claims

Total Medicare drug cost: $370k

Percentile rankings compared against 1,341 reporting peers in Oregon.

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 Arthritis.

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
Lower than avg (-1%)69%

Elevated cholesterol or triglycerides that increase heart disease risk

US avg: 70.4%

↓ Fewer patients than average (-1%) — less common here

Arthritis
Lower than avg (-3%)46%

Joint inflammation causing pain, swelling, and stiffness

US avg: 49.3%

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

Diabetes
Lower than avg (-3%)31%

A condition where the body cannot properly regulate blood sugar levels

US avg: 34.5%

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

Mood Disorders
29%

Conditions affecting emotional state, including depression and bipolar disorder

Ischemic Heart Disease
Lower than avg (-4%)28%

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

US avg: 31.7%

↓ Fewer patients than average (-4%) — less common here

COPD
Higher than avg (+8%)28%

Chronic Obstructive Pulmonary Disease — a group of lung diseases that block airflow

US avg: 20.4%

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

Depression
Lower than avg (-6%)26%

A mood disorder causing persistent sadness and loss of interest in activities

US avg: 31.8%

↓ Fewer patients than average (-6%) — 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 · 2002

    University of Texas Medical Branch

  2. 24 years in practice

    Experienced

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

University of Texas Medical Branch at Galveston (Class of 2002)

Virtual Internal Medicine Care With Charles Keith Cofas

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

Schedule a virtual visit with Charles Keith Cofas for blood pressure monitoring, cholesterol management, arthritis follow-ups — no travel to Klamath Falls 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 Charles Keith Cofas

NPI records show Dr. Cofas as active with telehealth listed in Klamath Falls, OR. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (541) 882-3818.

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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