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  • Addiction Medicine, Hospital Medicine, Internal Medicine
  • 39 years of experience
  • Adventist Health Clear Lake 15630 18th Ave, Clearlake, CA 95422
  • (707) 994-6486

Brief Intro

Dr. Onyejekwe graduated from the Howard University College of Medicine in 1986. He works in Clearlake, CA and specializes in Internal Medicine, Hospital Medicine, Addiction Medicine and Other Specialty. Dr. Onyejekwe is affiliated with Parkview Medical Center.

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Education Background

MEDICAL SCHOOL

Howard University College Of Medicine - 1986

Languages Spoken

  • English

Location & Hours

  • Valley Radiological Assocs
  • 15630 18th Ave, Clearlake, CA 95422

Specialties Treated

  • Internal Medicine
  • Hospital Medicine
  • Addiction Medicine
  • Other Specialty
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Conditions Addressed

  • Bipolar Disorder
  • Fractures, Dislocations, Derangement, and Sprains
  • Pulmonary Embolism
  • Iron Deficiency Anemia
  • Diabetes Mellitus (DM)
  • Obesity
  • Chronic Renal Disease
  • Gastroesophageal Reflux Disease (GERD)
  • Acute Pancreatitis
  • Intestinal Obstruction
  • Paroxysmal Supraventricular Tachycardia (PSVT)
  • Anal or Rectal Abscess
  • Pneumonia
  • Obstructive Sleep Apnea
  • Acute Myocardial Infarction (AMI)
  • Atrial Fibrillation and Atrial Flutter
  • Anemia
  • Sickle-Cell Disease
  • Ischemic Heart Disease
  • Skin and Subcutaneous Infections
  • Hypertension (HTN)
  • Epilepsy
  • Schizophrenia
  • Conduction Disorders
  • Ischemic Stroke
  • Candidiasis
  • Vitamin D Deficiency
  • Chronic Bronchitis
  • Dehydration
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Procedures Performed

  • Lumbar Puncture
  • Blood transfusion
  • Echocardiogram
  • Venipuncture
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Insurance Accepted

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

  • CHAMPVA
  • Health Net
  • GEHA
  • Mutual of Omaha
  • Humana
  • Medicare
  • L.A. Care Health Plan
  • BLUE CROSS of CALIFORNIA
  • Brand New Day
  • AARP
  • Premier Health Plan
  • Tricare
  • CareFirst Blue Cross Blue Shield
  • UnitedHealthcare
  • WPS Health Plan
  • Medicaid
  • Inland Empire Health Plan
  • SCAN Health Plan
  • Kaiser Permanente
  • Blue Shield of California
  • Optum Health
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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