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Dr. Nickolas Demark, DO

Hospital Medicine* Age 54
Dr. Nickolas Demark, DO
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Dr. Nickolas Demark, DO is a Hospital Medicine Specialist in Green Bay, WI.
Dr. Nickolas Demark, DO
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Dr. Nickolas Demark, DO

Hospital Medicine* Age 54
Green Bay, WI
Accepting new patients
Dr. Nickolas Demark, DO is a Hospital Medicine Specialist in Green Bay, WI.

About

Dr. Demark graduated from Des Moines University. Dr. Nickolas Demark, DO is a Hospital Medicine Specialist in Green Bay, WI. Dr. Demark currently practices at Practice and are affiliated with HSHS St. Mary's Hospital Medical Center and HSHS St. Nicholas Hospital. Dr. Demark has experience treating conditions like Hypokalemia among other conditions at varying frequencies. Dr. Demark's office accepts new patients. Dr. Demark is board certified in Internal Medicine.

Experience Check

Enter a condition or procedure
Hypokalemia
Respiratory Failure
Hyposmolality and Hyponatremia
Hypokalemia
Respiratory Failure
Hyposmolality and Hyponatremia
Hypokalemia
Respiratory Failure
Hyposmolality and Hyponatremia
Acidosis
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Acute Coronary Syndrome
Acute Deep Vein Thrombosis (DVT)
Acute Kidney Failure
Acute Pharyngitis
Acute Upper Respiratory Infection
Acute Venous Embolism Thrombosis
ADHD and-or ADD
Adult Failure to Thrive
All Headaches (incl. Migraine)
Anxiety
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Arrhythmias
Arthritis
Asphyxia and Hypoxemia
Asthma
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Atherosclerosis
Atrial Fibrillation
Back Pain
Bacterial Sepsis
Bedsores
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Bleeding Disorders
Cardiomyopathy
Cholecystitis and Gallstones
Chronic Pain
Chronic Pulmonary Heart Diseases (incl. Pulmonary Hypertension)
Congestive Heart Failure
Constipation
COPD (Chronic Obstructive Pulmonary Disease)
Coronary Artery Disease (CAD)
Deep Vein Thrombosis (DVT)
Dehydration
Diabetes Type 2
Diabetes With Renal Manifestations
Diabetic Polyneuropathy
Diarrhea
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Dyslipidemia
Epilepsy
  • View other providers who treat Epilepsy
Gastritis
Gastroesophageal Reflux Disease (GERD)
Gastrointestinal Bleeding
Gout
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Heart Attack (Acute Myocardial Infarction)
Heart Disease
Hemorrhoids
Hyperkalemia
Hyperlipidemia
Hypertension
Hypertensive Chronic Kidney Disease
Hypertensive Heart and Chronic Kidney Disease
Hypertensive Heart Disease
Hypotension
Hypotension (Excluding Maternal)
Intestinal Diverticulosis
Joint Pain
Leg and Foot Ulcers
Liver Damage from Alcohol
Malaise and Fatigue
Malnutrition
Nausea
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Nephritis and Nephropathy
Osteoarthritis
Peripheral Vascular Disease (PAD, PVD)
Pharyngitis
Pneumonia
Pulmonary Hypertension
Sinus Bradycardia
Skin Ulcer
Tobacco Use Disorder
Traumatic Brain Injury
Urinary Tract Infection (UTI)
Venous Embolism and Thrombosis
Abdominal Pain
Abnormal Uterine Bleeding
Acute Bronchitis
Acute Kidney Infection
Acute Lower Respiratory Infection
Acute Sinusitis
Administrative Physical
Adrenal Gland Diseases
Alcohol Withdrawal
Alkalosis
All Types of Food Poisoning
Allergic Rhinitis
Anal or Rectal Pain
Angina
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Angioedema
Ankle Disorders
Ankle Fracture
Ankle Sprain and Achilles Tendon Sprain or Rupture
Ankle Sprains and Strains
Anorectal Abscess
Aortic Aneurysm
Aortic Dissection
Aortic Stenosis
Aortic Valve Disease
Aortic Valve Regurgitation
Arthritis of the Elbow
Atrial Flutter
Atrial Septal Defect
Autoimmune Thyroid Diseases
Avascular Necrosis
Balanitis
Balanoposthitis
Biliary Atresia
Bladder Atony
Bladder Infection
Blastomycosis
Blood in Urine (Hematuria)
Broken Neck
Bronchiectasis
Bronchitis
Bronchospasm
Bruise of Face, Scalp, or Neck
Bursitis
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Cachexia
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Cardiomyopathy, Dilated
Cardiomyopathy, Hypertrophic
Carotid Artery Disease
Cerebral Artery Thrombosis
Cerebral Embolism
Cerebrovascular Disease
Chest Pain
Chest Wall Pain Syndrome
Chronic Deep Vein Thrombosis (DVT)
Chronic Depression (Dysthymia)
Chronic Neck Pain
Chronic Pelvic Pain
Chronic Sinusitis
Chronic Tonsillitis
Chronic Venous Embolism Thrombosis
Clavicle Fracture
Coccyx or Sacrum Fracture
Collapsed Lung (Pneumothorax)
Common Cold
Complex Regional Pain Syndrome (CRPS)
Concussion
Confusion
Congenital Anomalies of Kidney
Cough
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Cranial Trauma
Cryptococcosis
Dermatitis Due to Drugs
Dermatitis Due to Substances Taken Internally
Diabetes
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Diabetes Type 1
Diabetic Ketoacidosis
Difficulty With Walking
Diverticulitis
Diverticulosis
Dizziness
Duodenal Ulcer
Duodenitis
Dysentery
Dysphagia
Elbow Bursitis
Embolism
  • View other providers who treat Embolism
Emphysema
Endocarditis
Endometriosis
Enlarged Prostate (BPH)
Enteritis
Esophageal Ulcer
Esophageal Varices
Esophagitis
Essential Tremor
Eustachian Tube Dysfunction
Excessive Menstrual Bleeding
Fever
  • View other providers who treat Fever
Fibromyalgia
Gallstones
Gas-Bloat Syndrome
Gastric Ulcer
Gastroparesis
Goiter
  • View other providers who treat Goiter
Headache
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Heartburn
Hepatitis C
Herpes Zoster Without Complication
Hiatal Hernia
Human Immunodeficiency Virus (HIV)
Hypercalcemia
Hyperthyroidism
Hypogammaglobulinemia
Hypoglycemia
Hypoxemia
Ileus
  • View other providers who treat Ileus
Iliac Aneurysm
Indigestion
Influenza (Flu)
Intestinal Diverticulitis
Intestinal Obstruction
Intracerebral Hemorrhage
Irritable Bowel Syndrome
Ischemic Colitis
Itchy Skin
Kidney Infection
Leukocytopenia
Limb Pain
Limb Swelling Caused by Fluid Overload
Low Back Pain
Menstrual Disorders
Migraine
  • View other providers who treat Migraine
Mitral Valve Prolapse
Mitral Valve Regurgitation
Mitral Valve Stenosis
Mood Disorders (Dysthymia and Cyclothymia)
Muscle Spasm
Muscle Weakness
Nasopharyngitis
Nerve Root Injury and Plexus Disorders (incl. Pinched Nerve)
Neurogenic Bladder
Nighttime Urination (Nocturia)
Non-Alcoholic Fatty Liver Disease
Noninfectious Gastroenteritis and Colitis
Nosebleed
Osteoarthritis of Foot
Osteoarthritis of Hand
Osteoarthritis of Hip and Thigh
Osteoarthritis of Shoulder
Osteopenia
Overactive Bladder
Painful Urination (Dysuria)
Pancreatitis
Partial Lung Collapse
Patellofemoral Pain Syndrome (PFPS)
Pelvic Abscess
Pelvic Fracture
Peptic Ulcer
Pericarditis
Peripheral Arterial Embolism and Thrombosis
Phlebitis and Thrombophlebitis
Pollen Allergy
Polymyalgia Rheumatica (PMR)
Polyneuropathy Due to Alcohol and Drugs
Polyuria
  • View other providers who treat Polyuria
Primary Pulmonary Hypertension
Pulmonary Edema
Pulmonary Embolism
Radiculopathy
Raynaud's Disease
Reflex Sympathetic Dystrophy
Reflux Esophagitis
Renal Artery Arteriosclerotic Disease
Rhabdomyolysis
Rheumatic Aortic Valve Disorders
Rib Fracture
Sacrum Disorders
Sarcoidosis
Sciatica
  • View other providers who treat Sciatica
Second Degree Heart Block
Secondary Diabetes Mellitus
Seizure Disorders
Sepsis
  • View other providers who treat Sepsis
Sexually Transmitted Diseases (STDs)
Shingles
  • View other providers who treat Shingles
Shortness of Breath
Sick Sinus Syndrome
Sinus Tachycardia
Sinusitis
Sprains and Strains (incl. Muscle Tear)
Stroke
  • View other providers who treat Stroke
Subdural Hemorrhage
Supraventricular Tachycardia
Swine Flu
Tension Headache
Third Degree Heart Block
Thyroiditis
Tinnitus
  • View other providers who treat Tinnitus
Tonsillitis
Transient Ischemic Attack (TIA)
Tremor
  • View other providers who treat Tremor
Tricuspid Valve Disease
Trigeminal Neuralgia
Type 2 Heart Block - Mobitz
Urinary Incontinence
Urinary Stones
Venous Insufficiency
Ventricular Fibrillation
Ventricular Tachycardia (VT)
Viral Enteritis
Vitamin B Deficiency
Vitamin B12 Deficiency
Vitamin D Deficiency
Vitamin K Deficiency
Wheezing
  • View other providers who treat Wheezing
Yeast Infections
Arterial Blood Gas Test (ABG)
Electrocardiogram (EKG)

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • First Health (Coventry Health Care) PPO
  • Choice Plus POS II

Locations

  1. 1 HSHS St. Mary's Hospital Medical Center
    1726 Shawano Ave, Green Bay, WI 54303
    Icon Directions Right Arrow Directions Phone Icon (920) 498-4200
  2. 2 HSHS St. Nicholas Hospital
    3100 Superior Ave, Sheboygan, WI 53081
    Icon Directions Right Arrow Directions Phone Icon (920) 459-8300
  3. 3 University of Iowa Stead Family Children's Hospital
    200 Hawkins Dr, Iowa City, IA 52242
    Icon Directions Right Arrow Directions Phone Icon (920) 496-4700
  4. 4 St Vincent Hospital Rehabilitation Unit
    835 S Van Buren St, Green Bay, WI 54301
    Icon Directions Right Arrow Directions Phone Icon (920) 433-8338

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Dr. Demark's Office & Staff

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About Me

Specialties*
Hospital Medicine
Specialties*
  • *Sharecare does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
Education

Education

Medical Education
  • Des Moines University
Medical Education

Board Certifications

Board Certifications
  • Internal Medicine
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.
Common Questions and Answers
Responses are sourced directly from patients.
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Frequently Asked Questions

Find contact information here to make an appointment.

A list of accepted insurance providers is available on the Sharecare insurance check. It is always a good idea to verify your insurance when making an appointment.

New patients are generally accepted by Dr. Nickolas Demark, DO. To arrange an appointment, call the number on Dr. Demark's profile.

Dr. Nickolas Demark, DO is affiliated with HSHS St. Mary's Hospital Medical Center and HSHS St. Nicholas Hospital.

Yes, Dr. Nickolas Demark, DO holds board certification in Internal Medicine.

Hospital Affiliations

  • HSHS St. Mary's Hospital Medical Center

    1726 Shawano Ave, Green Bay, WI

  • HSHS St. Nicholas Hospital

    3100 Superior Ave, Sheboygan, WI