Dr. Ivy-Joan E. Madu

About the Doctor

Dr. Ivy-Joan E. Madu is an experienced endocrinologist with over 21 years of practice in Orange, California. She earned her medical degree from the University of Benin Faculty of Medicine and completed internal medicine residencies at New York-Presbyterian Brooklyn Methodist Hospital (1990–1992) and Albany Med Health System (1992–1993). Dr. Madu is affiliated with multiple hospitals, including Providence St. Joseph Hospital-Orange (a U.S. News Best Hospital ranked #23 in California, High Performing in Diabetes) and Hoag Memorial Hospital Presbyterian (ranked #9 in California, High Performing in Diabetes). She has a patient rating of 4/5 based on 191 reviews and has received a patient award for clearly explaining conditions. Her clinical expertise includes managing chronic diabetes, hypertension, high cholesterol, and diabetic emergencies. She is accepting new patients and accepts Humana, Cigna, United Healthcare, and other major insurance plans.

• Over 21 years of experience in endocrinology, diabetes, and metabolism

• Graduated from University of Benin Faculty of Medicine

• Residencies in Internal Medicine at New York-Presbyterian Brooklyn Methodist Hospital and Albany Med Health System

• Affiliated with Providence St. Joseph Hospital-Orange and Hoag Memorial Hospital Presbyterian – both High Performing in Diabetes

• Patient rating 4/5 (191 reviews); recognized for clearly explaining conditions

• Accepting new patients

• Expertise in chronic diabetes, hypertension, high cholesterol, diabetic emergencies, spinal stenosis and spondylosis (as noted in source)

Education & Training

Medical School – University of Benin Faculty of Medicine
Residency – New York-Presbyterian Brooklyn Methodist Hospital, Internal Medicine, 1990–1992
Residency – Albany Med Health System, Internal Medicine, 1992–1993
Fellowship/Additional Training – Not specified

Medical Conditions Treated

• Chronic diabetes (Type 1 and Type 2)

• Diabetic emergencies (hyperglycemia, hypoglycemia, diabetic ketoacidosis)

• Chronic hypertension (high blood pressure)

• High cholesterol (hyperlipidemia)

• Thyroid disorders (hypothyroidism, hyperthyroidism, thyroid nodules)

• Obesity and metabolic syndrome

• Polycystic ovary syndrome (PCOS)

• Osteoporosis and metabolic bone disease

• Pituitary and adrenal gland disorders

• Spinal stenosis and spondylosis (as noted in source – may reflect comorbid conditions managed)

Medical Procedures Performed

• Continuous glucose monitoring (CGM) placement and interpretation

• Insulin pump management and adjustment

• Thyroid ultrasound and fine needle aspiration biopsy

• Hemoglobin A1c testing and interpretation

• Lipid panel and metabolic profile analysis

• Bone density testing (DEXA scan) interpretation

• Oral glucose tolerance testing

• Diabetes self-management education and training

Services Offered

Dr. Madu provides comprehensive endocrine and metabolic care for patients with diabetes, thyroid disease, hypertension, cholesterol disorders, and other hormone-related conditions. Her practice focuses on personalized treatment plans to optimize blood sugar control, prevent diabetic complications, and manage cardiovascular risk factors. She offers insulin pump therapy, continuous glucose monitoring, and medication management for Type 1 and Type 2 diabetes. Dr. Madu also provides thyroid disease management, including ultrasound and biopsy for nodules, as well as treatment for osteoporosis, PCOS, and metabolic syndrome. She is known for clearly explaining conditions and involving patients in their care decisions.

• Diabetes care – Type 1 and Type 2 diabetes management, insulin pump therapy, CGM, prevention of complications (neuropathy, nephropathy, retinopathy)

• Hypertension management – Blood pressure monitoring, medication adjustment, lifestyle counseling

• Cholesterol management – Lipid-lowering therapies, diet and exercise guidance

• Thyroid services – Diagnosis and treatment of hypothyroidism/hyperthyroidism, thyroid ultrasound, fine needle aspiration biopsy

• Metabolic health – Weight management, metabolic syndrome treatment, PCOS management

• Osteoporosis care – Bone density screening, calcium/vitamin D supplementation, bisphosphonate therapy

• Diabetic emergency management – Acute care for hyperglycemia, hypoglycemia, DKA

• Patient education – Diabetes self-management training, nutritional counseling, glucose monitoring instruction

• Coordinated care – Referrals to cardiologists, nephrologists, podiatrists, and ophthalmologists

Accepted Insurances

• Cigna (PPO)

• Elevance (EPO, HMO, Medicare, POS, PPO)

• Humana (Medicare, PPO)

• United Healthcare (HMO, Medicare, POS, PPO)

Practice Locations

Address: 1310 W Stewart Dr, Ste 610, Orange, CA, 92868
Phone: (714) 639-1815

Hospital Affiliations

• Providence St. Joseph Hospital-Orange – Orange, CA 

• Hoag Memorial Hospital Presbyterian – Newport Beach, CA