Expertise in
3
conditions

Dr. Leslie J. Klaff

Endocrinology
Office
723 SW 10th St Ste 100, 
Renton, WA 
Accepting New Patients
Referral required
Before you request
Expertise in
3
conditions
Office
723 SW 10th St Ste 100, 
Renton, WA 

Overview

Leslie Klaff is an Endocrinologist practicing medicine in Renton, Washington.

Dr. Klaff is highly rated in 3 conditions, according to our data. His clinical expertise encompasses Maturity Onset Diabetes of the Young, Type 1 Diabetes (T1D), Low Blood Sugar, and Type 2 Diabetes (T2D).

He is actively involved in clinical research, co-authoring 19 peer reviewed articles and participating in 33 clinical trials. Dr. Klaff is currently accepting new patients.

Specialties

Endocrinology

Licenses

Internal Medicine in WA

Languages Spoken

English

Gender

Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

PacificSource
  • PPO

Locations

Office
723 SW 10th St Ste 100, Renton, WA 98057

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.

28 Clinical Trials

A Phase III, Double-Blind, Randomized, Placebo-Controlled, Multicenter Study to Assess the Safety and Efficacy of VM202 in Participants With Painful Diabetic Peripheral Neuropathy
A Phase III, Double-Blind, Randomized, Placebo-Controlled, Multicenter Study to Assess the Safety and Efficacy of VM202 in Participants With Painful Diabetic Peripheral Neuropathy
Enrollment Status: Completed
Publish Date: October 09, 2025
Intervention Type: Other, Biological
Study Phase: Phase 3
Long-term, Prospective, Non-interventional, Extension of a Phase III, Randomized, Placebo-controlled, Multicenter Study to Assess the Safety & Efficacy of Engensis (VM202) in Subjects With Painful Diabetic Peripheral Neuropathy
Long-term, Prospective, Non-interventional, Extension of a Phase III, Randomized, Placebo-controlled, Multicenter Study to Assess the Safety & Efficacy of Engensis (VM202) in Subjects With Painful Diabetic Peripheral Neuropathy
Enrollment Status: Completed
Publish Date: October 09, 2025
Intervention Type: Drug, Genetic
Study Phase: Phase 3
A Phase 3, Multicenter, Randomized, Parallel-Design, Open-Label Trial to Evaluate the Efficacy and Safety of LY3209590 Compared With Insulin Degludec in Participants With Type 2 Diabetes Currently Treated With Basal Insulin (QWINT-3)
A Phase 3, Multicenter, Randomized, Parallel-Design, Open-Label Trial to Evaluate the Efficacy and Safety of LY3209590 Compared With Insulin Degludec in Participants With Type 2 Diabetes Currently Treated With Basal Insulin (QWINT-3)
Enrollment Status: Completed
Publish Date: June 03, 2025
Intervention Type: Drug
Study Drugs: LY3209590, Insulin Degludec
Study Phase: Phase 3
PROMISE Study: A Prospective, Multicenter Evaluation of Accuracy and Safety of an Implantable Continuous Glucose Sensor Lasting up to 180 Days
PROMISE Study: A Prospective, Multicenter Evaluation of Accuracy and Safety of an Implantable Continuous Glucose Sensor Lasting up to 180 Days
Enrollment Status: Completed
Publish Date: August 20, 2024
Intervention Type: Device
Study Phase: Not Applicable
Randomized, Placebo-Controlled, Phase 2 Clinical Trial to Evaluate LY3526318 for the Treatment of Osteoarthritis Pain
Randomized, Placebo-Controlled, Phase 2 Clinical Trial to Evaluate LY3526318 for the Treatment of Osteoarthritis Pain
Enrollment Status: Completed
Publish Date: July 17, 2024
Intervention Type: Drug
Study Drug: LY3526318
Study Phase: Phase 2
Efficacy and Safety of Tirzepatide Once Weekly Versus Placebo for Maintenance of Weight Loss in Participants Without Type 2 Diabetes Who Have Obesity or Are Overweight With Weight-Related Comorbidities: A Randomized, Double-Blind, Placebo-Controlled Trial (SURMOUNT-4)
Efficacy and Safety of Tirzepatide Once Weekly Versus Placebo for Maintenance of Weight Loss in Participants Without Type 2 Diabetes Who Have Obesity or Are Overweight With Weight-Related Comorbidities: A Randomized, Double-Blind, Placebo-Controlled Trial (SURMOUNT-4)
Enrollment Status: Completed
Publish Date: May 22, 2024
Intervention Type: Other, Drug
Study Drug: Tirzepatide
Study Phase: Phase 3
Efficacy and Safety of Tirzepatide Once Weekly in Participants With Type 2 Diabetes Who Have Obesity or Are Overweight: A Randomized, Double-Blind, Placebo-Controlled Trial (SURMOUNT-2)
Efficacy and Safety of Tirzepatide Once Weekly in Participants With Type 2 Diabetes Who Have Obesity or Are Overweight: A Randomized, Double-Blind, Placebo-Controlled Trial (SURMOUNT-2)
Enrollment Status: Completed
Publish Date: April 08, 2024
Intervention Type: Other, Drug
Study Drug: Tirzepatide
Study Phase: Phase 3
Randomized, Placebo-Controlled, Phase 2 Clinical Trial to Evaluate LY3016859 for the Treatment of Chronic Low Back Pain
Randomized, Placebo-Controlled, Phase 2 Clinical Trial to Evaluate LY3016859 for the Treatment of Chronic Low Back Pain
Enrollment Status: Completed
Publish Date: November 30, 2023
Intervention Type: Drug
Study Drug: LY3016859
Study Phase: Phase 2
Randomized, Placebo-Controlled, Phase 2 Clinical Trial to Evaluate LY3526318 for the Treatment of Diabetic Peripheral Neuropathic Pain
Randomized, Placebo-Controlled, Phase 2 Clinical Trial to Evaluate LY3526318 for the Treatment of Diabetic Peripheral Neuropathic Pain
Enrollment Status: Completed
Publish Date: November 22, 2023
Intervention Type: Drug
Study Drug: LY3526318
Study Phase: Phase 2
Randomized, Placebo-Controlled, Phase 2 Clinical Trial to Evaluate LY3016859 for the Treatment of Diabetic Peripheral Neuropathic Pain
Randomized, Placebo-Controlled, Phase 2 Clinical Trial to Evaluate LY3016859 for the Treatment of Diabetic Peripheral Neuropathic Pain
Enrollment Status: Completed
Publish Date: November 14, 2023
Intervention Type: Drug
Study Drug: LY3016859
Study Phase: Phase 2
View 9 Less Clinical Trials

19 Total Publications

Publisher Correction: Glucagon receptor antagonist volagidemab in type 1 diabetes: a 12-week, randomized, double-blind, phase 2 trial.
Publisher Correction: Glucagon receptor antagonist volagidemab in type 1 diabetes: a 12-week, randomized, double-blind, phase 2 trial.
Journal: Nature medicine
Published: March 18, 2023
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Frequently Asked Questions about Dr. Leslie J. Klaff

How do I make an appointment with Dr. Leslie J. Klaff?

You can book an appointment with Dr. Leslie J. Klaff by calling their office at 425-251-1720. MediFind provides direct contact information so you can schedule visits, second opinions, or consultations without navigating third-party calendars.

Is Dr. Leslie J. Klaff a top-rated expert for Maturity Onset Diabetes of the Young?

MediFind is an objective health platform that identifies experts based on real-world data. Dr. Leslie J. Klaff is classified as an Advanced expert for Maturity Onset Diabetes of the Young, meaning they are among the top experts in the country for this condition. This ranking is based on their volume of patients, published research, and peer connections.

What conditions does Dr. Leslie J. Klaff specialize in?

While Dr. Leslie J. Klaff is a Endocrinology, they have specific expertise in Maturity Onset Diabetes of the Young, Type 1 Diabetes (T1D), and Low Blood Sugar. MediFind analyzes a doctor's articles and referral patterns to identify their specific areas of focus within Endocrinology.

Does Dr. Leslie J. Klaff participate in research or clinical trials?

Yes. Dr. Leslie J. Klaff has published 19 articles and abstracts on conditions like Maturity Onset Diabetes of the Young. You can view a list of Dr. Leslie J. Klaff's latest peer-reviewed publications and clinical trial participation on their profile to see if they are active in new treatments.

Does Dr. Leslie J. Klaff accept my insurance?

Dr. Leslie J. Klaff accepts most major insurance plans, including PacificSource. We recommend calling the office directly at 425-251-1720 to verify that your specific plan is currently accepted before your visit.

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

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