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  • Oral & Maxillofacial Surgery, Internal Medicine
  • Accepting new patients
  • 59 years of experience
  • Vallejo Family Health Services Center 365 Tuolumne St, Vallejo, CA 94590
  • (707) 553-5509

Brief Intro

Dr. Chang graduated from the Seoul National University College of Medicine in 1966. He works in Vallejo, CA and 2 other locations and specializes in Internal Medicine and Oral & Maxillofacial Surgery. Dr. Chang is affiliated with Degraff Memorial Hospital.

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Education Background

RESIDENCY

Sisters Of Charity Hospital

MEDICAL SCHOOL

Seoul National University College Of Medicine - 1966

Languages Spoken

  • English
  • Korean

Location & Hours

  • Vallejo Family Health Services Center
  • 365 Tuolumne St, Vallejo, CA 94590

Specialties Treated

  • Internal Medicine
  • Oral & Maxillofacial Surgery

Conditions Addressed

  • Anxiety Phobic Disorders
  • Pulmonary Embolism
  • Acute Pharyngitis
  • Herpes Zoster
  • Hyperthyroidism
  • Hypothyroidism
  • Glaucoma
  • Venous Embolism and Thrombosis
  • Erectile Dysfunction (ED)
  • Attention Deficit Disorder (ADD)
  • Contact Dermatitis
  • Gout
  • Urinary Incontinence
  • Dementia
  • Tension Headache
  • Atrial Fibrillation and Atrial Flutter
  • Benign Prostatic Hypertrophy (BPH)
  • Bipolar Disorder
  • Acute Upper Respiratory Tract Infections
  • Alcohol Dependence
  • Skin Rash
  • Pneumonia
  • Post Traumatic Stress Disorder (PTSD)
  • Sexually Transmitted Diseases (STDs)
  • Bronchial Asthma
  • Plantar Warts
  • Chronic Bronchitis
  • Depressive Disorders
  • Athlete's Foot
  • Disorders of Lipoid Metabolism
  • Abdominal Hernia
  • Hypertension (HTN)
  • Hair Loss
  • Spinal Stenosis
  • Systemic Lupus Erythematosus
  • Ventral Hernia
  • Calculus of the Urinary System
  • Cardiomyopathy
  • Cataract
  • Constipation
  • Tinea Unguium
  • Diabetes Mellitus (DM)
  • Acne
  • Fractures, Dislocations, Derangement, and Sprains
  • Gastrointestinal Hemorrhage
  • Heart Failure
  • Hemorrhoids
  • Inguinal Hernia
  • Insomnia
  • Ischemic Heart Disease
  • Ischemic Stroke
  • Infectious Liver Disease
  • Obstructive Sleep Apnea
  • Obesity
  • Plantar Fasciitis
  • Septicemia
  • Carpal Tunnel Syndrome (CTS)
  • Cirrhosis
  • Abnormal Vaginal Bleeding
  • Peripheral Nerve Disorders
  • Lateral Epicondylitis
  • Epilepsy
  • Gastroesophageal Reflux Disease (GERD)
  • Gastritis and Duodenitis
  • Acute Conjunctivitis
  • Hearing Loss
  • Herpes Simplex
  • Skin and Subcutaneous Infections
  • Urinary Tract Infection (UTI)
  • Inflammatory Bowel Disease (IBD)
  • Anemia
  • Schizophrenia
  • Sciatica
  • Bell's Palsy
  • Vitamin D Deficiency
  • Cholelethiasis or Cholecystitis
  • Chronic Renal Disease
  • Acute Pancreatitis
  • Osteoarthritis
  • HIV Infection
  • Intervertebral Disc Degeneration
  • Iron Deficiency Anemia
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Procedures Performed

  • Physical Therapy

Insurance Accepted

* Insurance information may change frequently. Please verify directly with the provider (doctor/clinic).

  • Blue Cross Blue Shield
  • Medicaid
  • Medicare
  • Univera Healthcare
  • Kaiser Permanente
  • UnitedHealthcare
  • Independent Health
  • Cigna
  • Contra Costa Health Plan
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  • Cancer 86
  • Cardiology, Heart & Vascular Surgery 79
  • Orthopedics 161
  • Neurology & Neurosurgery 120
  • Gastroenterology & GI Surgery 149
  • Pulmonology & Lung Surgery 161
  • Diabetes & Endocrinology 65
  • Children's Hospital 18
  • Urology 149
  • Psychiatry 91
  • Geriatrics 143
  • Rehabilitation 73
  • Obsterics & Gynecology 23
  • Ophthalmology 8
  • Ear, Nose & Throat 10
  • Rheumatology 4
  • Long Term Care 19
  • Maternity Care (Uncomplicated Pregnancy) 99