Won Kye Yu, M.D.

Gastroenterology Internal Medicine

(714) 937-9400Tustin, CA
Telehealth Available
NPI Active per CMS — Q2 2026

With over 26 years in internal medicine, Won Kye Yu, M.D. is a long-established gastroenterologist in Tustin. He graduated from Temple University School of Medicine in 2000 and has 26+ years of clinical experience. He regularly sees Medicare patients with hypertension, high cholesterol, and arthritis (per CMS claims data).

1 of 847 Internal Medicine providers in CASee all Internal Medicine in Tustin26+ years experienceNPI since 2005

Older · 1316dNPPES updated 2022-09-28 · verify on CMS

Contact & Location

Practice Location

17400 Irvine Blvd Ste F, Tustin, CA 92780-3030

Fax: (714) 937-9404
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
75%

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

High Cholesterol
75%

Elevated cholesterol or triglycerides that increase heart disease risk

Arthritis
50%

Joint inflammation causing pain, swelling, and stiffness

Diabetes
36%

A condition where the body cannot properly regulate blood sugar levels

Osteoporosis
26%

Weakened bones that are more prone to fractures, common in older adults

Chronic Kidney Disease
25%

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

Ischemic Heart Disease
21%

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

Mood Disorders
21%

Conditions affecting emotional state, including depression and bipolar disorder

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 Won Kye Yu, 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 · 2000

    Temple University School of Medicine

  2. Board certified · Sep 27, 2022

    CMS-verified certification date

  3. 26 years in practice

    Experienced

Internal MedicineAllopathic & Osteopathic Physicians

Gastroenterologists diagnose and treat digestive system disorders including GERD, irritable bowel syndrome (IBS), inflammatory bowel disease (Crohn's, ulcerative colitis), liver disease, pancreatitis, and colon polyps. They perform endoscopies and colonoscopies.

Taxonomy: 207RG0100X

Education & Training

Temple University School of Medicine (Class of 2000)

Virtual Internal Medicine Care With Won Kye Yu

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

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

Frequently Asked Questions

Common questions about Won Kye Yu

Dr. Yu is listed as active in the NPI registry with telehealth listed in Tustin, CA. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (714) 937-9400.

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

Gastroenterology Internal Medicine in CA

See all