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andrew-day Photo

Specialty:
Medicine, Endocrinology - Diabetes and Metabolism
Department Affiliation:
Medicine
State License:
A143775
Phone:
661-753-5464
Health Plans:
Accepted Plans
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About Me

Dr. Andrew Day is an endocrinologist who practices at UCLA Health's Santa Clarita clinic.

Dr. Day received his medical degree from the Temple University School of Medicine. He completed his internship and residency in internal medicine at the University of Wisconsin, Madison. He moved to the University of California, Los Angeles to complete a fellowship in endocrinology, diabetes, and metabolism. He received his undergraduate degree from the University of Chicago, where he graduated with honors.

Prior to pursuing a career in medicine, Dr. Day participated in research that studied the associations between sleep and metabolic health. Dr. Day has an interest in medical education and is involved with the David Geffen School of Medicine at UCLA.

Dr. Day was born and raised in Wisconsin. Outside of medicine, his interests include travel, reading, baseball, camping, hiking, kayaking, and enjoying the arts.

Patient Stories

Great UCLA Doctor
Links

uclahealth.org/santa-clarita
uclahealth.org/endocrinology

Primary Office
Santa Clarita Primary & Specialty Care
25775 McBean Parkway
Suite 202
Valencia, CA 91355
Get Directions
View Map
Phone
661-753-5464
Fax
661-753-5465
Medical Board Certifications
Internal Medicine, American Board of Internal Medicine, 2016
Certification 2
Endocrinology, Diabetes and Metabolism, American Board of Internal Medicine, 2018
Fellowship
Endocrinology Diabetes & Metabolism, UCLA School of Medicine, 2016-2018
Residency
Internal Medicine, University of Wisconsin Hospitals and Clinics, 2013-2016
Degree
Temple University School of Medicine, MD, 2013
Interests
  • Adrenal Disorders
  • Calcium & Vitamin Deficiency
  • Calcium and Bone Health Disorders
  • Cholesterol

    Cholesterol in the Blood

    The cholesterol in your blood comes from the foods you eat and your liver. Your liver makes all of the cholesterol your body needs. It helps your body make cell membranes, many hormones, and vitamin D. 
    Learn more >
  • Cushing´s Disease
  • Diabetes Type 1

    Type 1 Diabetes

    In type 1 diabetes, the body can’t make insulin. Insulin is needed to help sugar (glucose) enter cells for energy. Read on to learn more about this condition that often develops in children or young adults.
    Learn more >
  • Diabetes Type 2

    Type 2 Diabetes

    When your body can't make enough insulin or can't use insulin, it is called type 2 diabetes. Insulin helps the cells in the body absorb glucose, or sugar, for energy. Without insulin, glucose builds up in the blood resulting in high blood sugar.
    Learn more >
  • Endocrine Disorders in Pregnancy
  • Endocrine Syndromes

    Home Page - Endocrinology

    The endocrine system is a complex collection of hormone-producing glands that control basic body functions such as metabolism, growth, and sexual development. 
    Learn more >
  • General Endocrinology

    Hormones and the Endocrine System

    The endocrine system uses hormones to control and coordinate your body's internal metabolism (or homeostasis) energy level, reproduction, growth and development, and response to injury, stress, and environmental factors.
    Learn more >
  • Graves Disease

    Hyperthyroidism

    Hyperthyroidism means your thyroid gland is too active. This tiny gland is found in your neck. An overactive thyroid gland makes too much thyroid hormone. This makes your metabolism work at a faster rate.
    Learn more >
  • Hypogonadism
  • Latent Autoimmune Diabetes of Adults (LADA)
  • Maturity Onset Diabetes of the Young (MODY)

    Overview of Diabetes Mellitus

    Diabetes can be defined as a metabolic disorder because the disease affects the way the body uses food to make glucose. This is the main source of fuel for the body. The three main types of diabetes include: Type 1 diabetes; Type 2 diabetes; Gestational diabetes.
    Learn more >
  • Metabolic Syndrome

    Metabolic Syndrome

    Metabolic syndrome is a condition that includes the presence of a cluster of risk factors specific for cardiovascular disease. Metabolic syndrome greatly raises the risk of developing diabetes, heart disease, stroke, or all three.
    Learn more >
  • Osteoporosis

    Osteoporosis

    Osteoporosis is a disease that causes weak, thinning bones. This leaves the bones at greater risk of breaking. The bones most often affected are the hips, spine, and wrists.
    Learn more >
  • Paget's Disease

    Paget Disease of the Bone

    Paget disease of the bone is a chronic bone disorder. It causes bones to become enlarged and deformed. Bone may become dense, but fragile, because of excessive breakdown and deformation of bone. The disease is the most common bone disorder after osteoporosis in people older than age 50.
    Learn more >
  • Parathyroid Disorders

    Parathyroid Glands

    Parathyroid glands produce parathyroid hormone, which plays a key role in the regulation of calcium levels in the blood. Precise calcium levels are important in the human body, since small changes can cause muscle and nerve problems.
    Learn more >
  • Pituitary Disorders

    Disorders of the Pituitary Gland

    Detailed information on pituitary gland disorders, including acromegaly, diabetes insipidus, empty sella syndrome, hypopituitarism, and pituitary gland tumors.
    Learn more >
  • Pre-Diabetes

    Diagnosing Diabetes

    According to the National Institute of Diabetes and Digestive and Kidney Diseases: People over age 45 should be tested for prediabetes or diabetes. If the first blood glucose test is normal, they should be retested every 3 years. If you are younger, you should be tested if you are at high risk.
    Learn more >
  • Thyroid

    Thyroid Gland

    Detailed information on the thyroid gland, including anatomy and function
    Learn more >
  • Thyroid Cancer

    Thyroid Cancer: Introduction

    Thyroid cancer starts in the gland called the thyroid. It occurs when cells in the thyroid gland grow out of control.
    Learn more >
  • Thyroid Disorders

    Disorders of the Thyroid

    Detailed information on disorders of the thyroid, including hyperthyroidism, Graves' disease, toxic nodular goiter, thyroiditis, hypothyroidism, Hashimoto's thyroiditis, thyroid tumor, hypothyroidism and pregnancy, postpartum thyroiditis, and thyroid horm
    Learn more >
  • Thyroid Nodules

    Thyroid Function Tests

    Detailed information on the most common types of thyroid function tests
    Learn more >
  • Tumor
Publications
  1. Day A, Yeh M, Livhits M. Surgery for Hyperthyroidism Lowers Cardiovascular Mortality Compared with Radioactive Iodine. Clinical Thyroidology. Jan 2018; 30: 15-17.
  2. Grock S, Day A, Bhat S. Two cases of impaired sensitivity to thyroid hormone with wild-type THRβ gene. Clinical Thyroidology. Aug 2017; 29: 318-321.
  3. Broussard J, Kilkus J, Delebecque F, Abraham V, Day A, Whitmore H, Tasali E. Elevated ghrelin predicts food intake during experimental sleep restriction. Obesity. Jan 2016; 24(1):132-8.
  4. Broussard J, Chapotot F, Abraham V, Day A, Delebecque F, Whitmore H, Tasali E. Sleep restriction increases free fatty acids in healthy men. Diabetologia. Apr 2015; 58(4):791-8.
  5. Pamidi S, Wroblewski K, Broussard J, Day A, Hanlon E, Abraham V, Tasali E. Obstructive sleep apnea in young lean men: impact on insulin sensitivity and secretion. Diabetes Care. Nov 2012; 35(11):2384-9.
Awards
  • Super Doctors® Southern California Rising Stars 2021
Andrew Day, MD click here to update your profile
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