Jonathan Quentin Purnell, MD

Endocrinology, Diabetes & Metabolism

Internal Medicine

(503) 494-5732Portland, OR
Telehealth Available
NPI Active per CMS — Q2 2026

With over 40 years in internal medicine, Jonathan Quentin Purnell, MD is a long-established endocrinology, diabetes & metabolism specialist in Portland. A Oregon Health Sciences University School of Medicine graduate since 1986, he brings 40+ years of experience. CMS Medicare data shows his patients commonly have high cholesterol, hypertension, and arthritis.

1 of 52 Internal Medicine providers in ORSee all Internal Medicine in Portland40+ years experienceNPI since 2006

Older · 6877dNPPES updated 2007-07-08 · verify on CMS

Contact & Location

Practice Location

3181 Sw Sam Jackson Park Rd, Portland, OR 97239-3011

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 Arthritis.

High Cholesterol
75%

Elevated cholesterol or triglycerides that increase heart disease risk

Hypertension
69%

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

Arthritis
52%

Joint inflammation causing pain, swelling, and stiffness

Diabetes
43%

A condition where the body cannot properly regulate blood sugar levels

Ischemic Heart Disease
41%

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

Mood Disorders
37%

Conditions affecting emotional state, including depression and bipolar disorder

Depression
31%

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

Anxiety Disorders
31%

Excessive worry or fear that interferes with daily life

GeneralBehavioralNational avg

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

Patient Reviews

No patient reviews yet. If you've seen Jonathan Quentin Purnell, your feedback helps other patients.

Review PolicyAll feedback is moderated before publishing. We verify reviewer identity where possible and enforce a one-review-per-provider policy. Full guidelines →

Background & Specialty

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

Career Journey
  1. Graduated medical school · 1986

    Oregon Health Sciences University School of Medicine

  2. 40 years in practice

    Senior practitioner

Endocrinologists treat hormonal and metabolic disorders including diabetes (type 1 and 2), thyroid disease, osteoporosis, adrenal disorders, pituitary conditions, and polycystic ovary syndrome (PCOS).

Taxonomy: 207RE0101X

Education & Training

Oregon Health Sciences University School of Medicine (Class of 1986)

Practice Footprint

Mailing address

1814 Sw Elm St, Portland, OR 97201-2329

Differs from practice location

Virtual Endocrinology, Diabetes & Metabolism Care With Jonathan Quentin Purnell

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

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

Frequently Asked Questions

Common questions about Jonathan Quentin Purnell

Dr. Purnell is listed as active in the NPI registry with telehealth listed in Portland, OR. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (503) 494-5732.

Verified across 3 federal data sources

Sourced from CMS NPPES · OIG LEIE · CMS Physician Comparator. See Data Methodology.

Is this your profile?

Verify credentials, update practice details, and manage telehealth.

Claim Profile

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.

Related Providers

Endocrinology, Diabetes & Metabolism in OR

See all