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Dr. Alexander Tosiou, MD

Gastroenterology*
3.8 (18)
Map Pin Small Grayslake, IL
Accepting new patients
31 years of experience

Overview of Dr. Alexander Tosiou, MD

Dr. Alexander Tosiou, MD is a Gastroenterology Specialist in Grayslake, IL. They specialize in Gastroenterology, has 31 years of experience, and is board certified in Gastroenterology. They graduated from Loyola University Chicago Stritch School of Medicine and is affiliated with Northwestern Medicine Lake Forest Hospital. Dr. Tosiou, completed a residency at Evanston Northwestern Healthcare|McGaw Medical Center of Northwestern University. Patients rated Dr. Tosiou an average 3.8 star rating.

Dr. Tosiou works at Northwestern Medicine Gastroenterology Grayslake Outpatient Center in Grayslake, IL with other offices in Lake Forest, IL. They frequently treat conditions like Hemorrhoids, Abdominal Pain and Gastroesophageal Reflux Disease (GERD) along with other conditions at varying frequencies. They are accepting new patients and accept Aetna, Anthem and Anthem Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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Dr. Tosiou's Office Locations

  1. 1
    Northwestern Medicine Gastroenterology Grayslake Outpatient Center - Pavilion A
    1475 E Belvidere Rd Ste 301, Grayslake, IL 60030 Icon Directions Right Arrow Directions Phone Icon (847) 535-6083
  2. 2
    Northwestern Medical Group
    800 N Westmoreland Rd Ste 100, Lake Forest, IL 60045 Icon Directions Right Arrow Directions Phone Icon (847) 535-6083

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Northwestern Medicine Lake Forest Hospital

Experience & Treatment Frequency

NEW FEATURE

What is treatment frequency?

Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

Very HighFrequency
HighFrequency
NormalFrequency
May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

Search for conditions or procedures.
Hemorrhoids
Abdominal Pain
Gastroesophageal Reflux Disease (GERD)

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Hemorrhoids
Abdominal Pain
Gastroesophageal Reflux Disease (GERD)
Chronic Gastritis
Constipation
Diaphragmatic and Hiatal Hernia
Esophagitis
Gastritis
Intestinal Diverticulosis
Reflux Esophagitis
Viral Enteritis
Colorectal Polyp
Diarrhea
  • View other providers who treat Diarrhea
Esophageal Motility Disorders
Gastric Ulcer
Intestinal Ulcer
Vomiting Disorders
Colonoscopy, Proctosigmoidoscopy, and Sigmoidoscopy
Duodenal Polypectomy
Endoscopy (Esophagus, Stomach, Small Intestine)
Anal or Rectal Pain
Anemia
  • View other providers who treat Anemia
Barrett's Esophagus
Duodenitis
Dysentery
Dysphagia
Enteritis
Eosinophilic Esophagitis
Esophageal Ulcer
Gas-Bloat Syndrome
Gastrointestinal Bleeding
Gastrointestinal Malabsorption
Gastroptosis
Heartburn
Infectious Diarrheal Disease
Inflammatory Bowel Disease
Intestinal Diverticulitis
Irritable Bowel Syndrome
Malnutrition
Nausea
  • View other providers who treat Nausea
Non-Alcoholic Fatty Liver Disease
Noninfectious Gastroenteritis and Colitis
Ulcerative Colitis
Unexplained Weight Loss
Vitamin_Deficiency
ERCP (Endoscopic Retrograde Cholangiopancreatography)
Flexible Sigmoidoscopy
Manometry
Removal or Destruction of Rectal or Intestinal Tumor (incl. Colonoscopy, Proctosigmoidoscopy, Sigmoidoscopy and Control of Hemorrhage)
Rigid Proctosigmoidoscopy
Acidosis
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Acute Deep Vein Thrombosis (DVT)
Acute Venous Embolism Thrombosis
ADHD and-or ADD
Alkalosis
All Headaches (incl. Migraine)
Allergic Rhinitis
Anal Sphincter Dysplasia
Animal Allergies
Anxiety
  • View other providers who treat Anxiety
Arthritis
Arthritis of the Elbow
Ascites
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Asthma
  • View other providers who treat Asthma
Asymptomatic Post-Menopausal Status
Ataxia
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Atherosclerosis
Back Pain
Barretts Esophagus with Dysplasia
Bedsores
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Benign Chronic Pain Syndrome
Benign Neoplasm of the Digestive System
Bladder Infection
Blood in Urine (Hematuria)
Calcium Metabolism Disorders
Candidiasis of Skin and Nails
Celiac Disease
Cellulitis
Chest Pain
Chronic Fatigue Syndrome
Chronic Neck Pain
Chronic Pain
Cirrhosis
COPD (Chronic Obstructive Pulmonary Disease)
Cough
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Crohn's Disease
Deep Vein Thrombosis (DVT)
Dehydration
Diabetes
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Diabetes Type 1
Diabetes Type 2
Diabetes With Renal Manifestations
Diabetic Polyneuropathy
Difficulty With Walking
Diffuse Esophageal Spasm
Diverticulitis
Diverticulosis
Dizziness
Duodenal Ulcer
Dyslipidemia
Eczema and Contact Dermatitis
Emphysema
Enlarged Prostate (BPH)
Esophageal Diverticulum
Esophageal Varices
Essential Tremor
Familial Adenomatous Polyposis
Fibromyalgia
Food Allergy
Gait Abnormality
Gallstones
Gastroparesis
Genital Warts
Gout
  • View other providers who treat Gout
Hair Loss
Headache
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Heart Disease
Hemochromatosis
Hepatitis B - Immune Response
Hepatorenal Syndrome
Hernia
  • View other providers who treat Hernia
Hiatal Hernia
Hyperkalemia
Hyperlipidemia
Hypertension
Hypoglycemia
Hypokalemia
Hypotension
Hypotension (Excluding Maternal)
Hypothyroidism
Ileus
  • View other providers who treat Ileus
Indigestion
Insomnia
  • View other providers who treat Insomnia
Intertrigo
Intestinal Obstruction
Iodine Deficiency
Iron Metabolism Disorders
Ischemic Colitis
Itchy Skin
Joint Pain
Lactose Intolerance
Leg and Foot Ulcers
Limb Swelling Caused by Fluid Overload
Lipid Disorders
Liver Damage from Alcohol
Low Back Pain
Magnesium Metabolism Disorders
Malaise and Fatigue
Mallory-Weiss Syndrome
Menopausal and Postmenopausal Disorders
Menstrual Disorders
Migraine
  • View other providers who treat Migraine
Mineral Metabolism Disorders
Muscle Spasm
Muscle Weakness
Nasopharyngitis
Nighttime Urination (Nocturia)
Non-Neonatal Jaundice
Obesity
  • View other providers who treat Obesity
Osteoarthritis
Osteoarthritis of Foot
Osteoarthritis of Hand
Osteoarthritis of Hand or Wrist
Osteoarthritis of Hip
Osteoarthritis of Hip and Thigh
Osteoarthritis of Knee
Osteoarthritis of Shoulder
Osteoarthritis of Spine
Osteopenia
Osteoporosis
Overweight
Painful Urination (Dysuria)
Pancreatitis
Patellofemoral Pain Syndrome (PFPS)
Pericardial Disease
Phlebitis and Thrombophlebitis
Pneumonia
Pollen Allergy
Polymyalgia Rheumatica (PMR)
Polymyositis
Polyneuropathy
Polyuria
  • View other providers who treat Polyuria
Potassium Deficiency
Pouchitis
Primary Biliary Cholangitis
Primary Sclerosing Cholangitis
Purpura
  • View other providers who treat Purpura
Pyloric Stenosis
Radiculopathy
Restless Leg Syndrome
Retroperitoneum Cancer
Rosacea
  • View other providers who treat Rosacea
Salivary Gland Cyst
Salivary Gland Stones and Inflammation
Sciatica (Not Due to Disc Displacement)
Secondary Diabetes Mellitus
Sexually Transmitted Diseases (STDs)
Shingles
  • View other providers who treat Shingles
Shortness of Breath
Sickle Cell Disease
Sinus Tachycardia
Sleep Apnea
Stomal Ulcer
Symptomatic Menopause
Thyroid Goiter
Tobacco Use Disorder
Trigeminal Neuralgia
Upper Digestive Tract Cancer
Urinary Incontinence
Urinary Stones
Urinary Tract Infection (UTI)
Venous Embolism and Thrombosis
Venous Insufficiency
Vertigo
  • View other providers who treat Vertigo
Viral Hepatitis
Vitamin B Deficiency
Vitamin B12 Deficiency
Vitamin D Deficiency
Warts
  • View other providers who treat Warts
Wheezing
  • View other providers who treat Wheezing
Colon Cancer Screening
Colonoscopy
Colorectal Cancer Screening
Diabetes Counseling
Electrocardiogram (EKG)
Fecal Occult Blood Test for Colorectal Cancer
Gallbladder Scan
Hepatitis A Screening
Hepatitis B Virus Screening
Hepatitis C Virus Screening
Hepatitis Screening
Impedance Testing
Instrumental Diagnostic Evaluation for Dysphagia
Liver Function Test
pH Probe
  • View other providers who treat pH Probe
Screening Colonoscopy
Ultrasound
Ultrasound, Endoanal
Ultrasound, Esophageal
VAP Lipid Testing
Wireless pH Testing
Check your insurance
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    Please double-check when making an appointment.

    View All Accepted Carriers

    • Aetna
    • Anthem
    • Anthem Blue Cross Blue Shield
    • AvMed
    • Beech Street (Multiplan)
    • Blue Cross and Blue Shield of Oklahoma
    • Blue Cross Blue Shield
    • Blue Cross Blue Shield of California
    • Blue Cross Blue Shield of Georgia
    • Buckeye Community Health Plan
    • CareFirst Blue Cross Blue Shield
    • ChoiceCare Network
    • Cigna
    • Cofinity
    • Coventry Health Care
    • Coventry Health Care of Illinois
    • First Health
    • Galaxy Health Network
    • HAP Insurance
    • Health Alliance
    • HealthLink
    • HealthSmart - Interplan Health Group
    • HFN
    • Humana
    • Imagine Health
    • MAPFRE Life Insurance Company of Puerto Rico
    • MultiPlan
    • UnitedHealthCare
    • Worker's Compensation

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
    Reviews are displayed in date order and collected from patients who have agreed to reporting accurate and fair reviews. Providers with no reviews may have a new FindCare profile, or no submitted reviews on FindCare yet.

    Learn more about how FindCare's ratings and reviews work

    3.8
    Average provider rating
    Based on 18 ratings
    Patient Ratings (18)
    5 Star
    (12)
    4 Star
    (1)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (5)
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    Dr. Tosiou's Office & Staff

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    Experience with Dr. Tosiou

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    • How well provider explains medical condition(s)
    • How well provider listens and answers questions
    • Hpends appropriate amount of time with patients

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    About Dr. Alexander Tosiou, MD

    Specialties*
    • Gastroenterology

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 31 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1184602732
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Fellowship
    • Advocate Lutheran General Hospital|Northwestern University Feinberg School Of Medicine
    Fellowship
    Residency
    • Evanston Northwestern Healthcare|McGaw Medical Center of Northwestern University
    Residency
    Internship
    • Evanston Northwestern Healthcare
    Internship
    Medical Education
    • Loyola University Chicago Stritch School of Medicine
    Medical Education
    Board Certifications
    • Gastroenterology
    Board Certifications
    What’s a board certification and why is it important that my provider has one?

    A board certification represents a provider’s dedication to ongoing training in one or more specialties, including the completion of intensive exams. While not all specialties have board certifications, if your provider does have one they’ve taken the extra step to master their specialty and to keep up with the latest advancements in their field.

    Frequently Asked Questions

    Dr. Alexander Tosiou, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. Tosiou is offering online scheduling or call the provider’s office for more information.

    Dr. Tosiou has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    Dr. Tosiou has seen patients for Hemorrhoids, Abdominal Pain and Gastroesophageal Reflux Disease (GERD), and more. You can see other conditions treated by Dr. Tosiou on their profile. Please call the provider’s office to confirm all visit reasons.

    18 patients have reviewed Dr. Tosiou. The overall rating for this provider is 3.8. You can read verified reviews and ratings and leave your own review based on your experience with Dr. Tosiou.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. Tosiou, there are benefits to both methods. A person calling to schedule an with Dr. Tosiou appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

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