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Dr. Shannon O'Mahar, MD

Medical Oncology* Age 46
Dr. Shannon O'Mahar, MD
4.0 (4 Ratings)

Offers telehealth

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Dr. Shannon O'Mahar, MD is a Medical Oncology Specialist in Madison, WI.
Dr. Shannon O'Mahar, MD
4.0 (4 Ratings)
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Dr. Shannon O'Mahar, MD

Medical Oncology* Age 46
Madison, WI
Accepting new patients
19 years of experience

Offers telehealth

Dr. Shannon O'Mahar, MD is a Medical Oncology Specialist in Madison, WI.

About

Dr. Shannon O'Mahar, MD is a Medical Oncology Specialist in Madison, WI and has 19 years experience. They graduated from Washington University School of Medicine in 2005 and completed a residency at Barnes-Jewish Hospital.They currently practice at Practice and are affiliated with Prairie Ridge Health, Ssm Health Saint Mary's Hospital Madison, Edgerton Hospital And Health Services, Ssm Health Saint Clare Hospital Baraboo, Ssm Health Saint Mary's Hospital Janesville, Stoughton Hospital and Upland Hills Health. Dr. O'Mahar has experience treating conditions like Myelodysplastic Syndromes, Retroperitoneum Cancer and Osteosarcoma among other conditions at varying frequencies. At present, Dr. O'Mahar received an average rating of 4.0/5 from patients and has been reviewed 4 times. Their office accepts new patients and telehealth appointments. Dr. O'Mahar is board certified in Hematology and accepts multiple insurance plans.

Offers Telehealth

This provider offers telehealth appointments. Call the office to schedule.

Explains Conditions Well

Patients said this doctor explains conditions well.

Trustworthy

Patients said this doctor is trustworthy.

Friendly Staff

Patients said the staff was friendly.

Easy Scheduling

Patients said scheduling was easy.

Compare with other Medical Oncology Specialists

Compare Dr. O'Mahar with our nearby Medical Oncology Specialists at Mayo
These providers are on the medical staff of Mayo
These providers are on the medical staff of Mayo.
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Experience Check

Enter a condition or procedure
Myelodysplastic Syndromes
Retroperitoneum Cancer
Osteosarcoma
Myelodysplastic Syndromes
Retroperitoneum Cancer
Osteosarcoma
Macroglobulinemia (incl. Waldenstrom's )
Myeloma
  • View other providers who treat Myeloma
Myeloproliferative Disorders
Anemia
  • View other providers who treat Anemia
Bleeding Disorders
Chronic Lymphocytic Leukemia
Acute Leukemia
Acute Myeloid Leukemia
Amyloidosis
Bladder Cancer
Bone Cancer
Breast Cancer
Cholangiocarcinoma
Chronic Myelomonocytic Leukemia
Coagulation Disorders
Colorectal Cancer
Deep Vein Thrombosis (DVT)
Endocrine Gland Cancer
Fever
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Hemochromatosis
Hodgkin's Disease
Joint Pain
Leukocytosis
Limb Pain
Liver Cancer
Lung Cancer
Marginal Zone Lymphoma
Metastatic Respiratory System Cancer
Neuroendocrine Tumors
Neutropenia
Non-Hodgkin's Lymphoma
Ovarian Cancer
Pancreatic Cancer
Pancytopenia
Polycythemia Rubra Vera
Prostate Cancer
Shortness of Breath
Small Intestine Cancer
Thrombocytosis
Thyroid Cancer
Tobacco Use Disorder
Urinary Tract Cancer
Urinary Tract Infection (UTI)
Uterine Cancer
Venous Embolism and Thrombosis
Vitamin B Deficiency
Arterial Blood Gas Test (ABG)
Electrocardiogram (EKG)
Immunization Administration
Abdominal Pain
Abnormal Thyroid
Acquired Hemolytic Anemia
Acute Deep Vein Thrombosis (DVT)
Acute Sinusitis
Acute Tonsillitis
Acute Upper Respiratory Infection
Acute Venous Embolism Thrombosis
Administrative Physical
All Headaches (incl. Migraine)
All Lymphoma
Anal and Rectal Cancer
Antiphospholipid Syndrome (APS)
Anxiety
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Arthritis
Arthritis of the Elbow
Asphyxia and Hypoxemia
Asthma
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Astrocytoma
Asymptomatic Post-Menopausal Status
Atherosclerosis
Back Pain
Basal Cell Carcinoma
Bladder Infection
Blood Disorders
Blood in Urine (Hematuria)
Bone Disorders
Brain and Nervous System Cancer (incl. Gliomas, Astrocytoma, Schwannoma, Medulloblastoma, Chordoma)
Brain Cancer
Breast Carcinoma
Bronchitis
Calcium Metabolism Disorders
Cancer
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Candidiasis of Skin and Nails
Carcinoma in Situ
Central Nervous System Lymphoma
Cervical Cancer
Chest Pain
Chronic Fatigue Syndrome
Chronic Myeloid Leukemia (CML)
Chronic Pain
Chronic Sinusitis
Constipation
COPD (Chronic Obstructive Pulmonary Disease)
Cough
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Cryoglobulinemia
Dehydration
Diabetes Type 2
Diabetes With Renal Manifestations
Diabetic Polyneuropathy
Diarrhea
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Diffuse Large B-Cell Lymphoma
Dyslipidemia
Dysphagia
Eczema and Contact Dermatitis
Emphysema
Enlarged Prostate (BPH)
ENT Cancer
Enteritis
Esophageal Cancer
Fallopian Tube Cancer
Familial Hypercholesterolemia
Fibromyalgia
Folate Deficiency Anemia
Follicular Lymphoma Grade 1
Follicular Lymphoma Grade 2
Follicular Lymphoma Grade 3
Follicular Lymphoma Grade 3A
Foot Infection
Gas-Bloat Syndrome
Gastritis
Gastroesophageal Reflux Disease (GERD)
Genital Herpes
Gout
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Gynecologic Cancer
Hair Loss
Head and Neck Cancer
Headache
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Heart Disease
Hemophilia
Hereditary Amyloidosis
Hereditary Spherocytosis
Hernia
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Herpes Simplex Infection
Herpes Zoster Without Complication
Hypercalcemia
Hypercoagulable State
Hyperkalemia
Hyperlipidemia
Hypertension
Hypogammaglobulinemia
Hypoglycemia
Hypokalemia
Hypotension
Hypotension (Excluding Maternal)
Hypothyroidism
Immune Thrombocytopenia
Immune Thrombocytopenic Purpura (ITP)
Insomnia
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Intestinal Diverticulitis
Intestinal Diverticulosis
Iodine Deficiency
Iron Metabolism Disorders
Itchy Skin
Kidney Cancer
Leg and Foot Ulcers
Limb Swelling
Limb Swelling Caused by Fluid Overload
Lipid Disorders
Low Back Pain
Low Blood Oxygen Level
Lymphocytosis
Lymphoma
  • View other providers who treat Lymphoma
Lymphoma, Large-Cell
Magnesium Metabolism Disorders
Malaise and Fatigue
Male Breast Cancer
Male Breast Carcinoma
Malnutrition
Mantle Cell Lymphoma
Medulloblastoma
Melanoma
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Meningiomas
Menopausal and Postmenopausal Disorders
Mineral Metabolism Disorders
Muscle Spasm
Muscle Weakness
Nail and Nail Bed Infection
Nail Infection
Nausea
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Nighttime Urination (Nocturia)
Nodular Lymphoma
Noninfectious Gastroenteritis and Colitis
Nosebleed
Obesity
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Oral Cancer
Osteoarthritis
Osteoarthritis of Foot
Osteoarthritis of Hip
Osteoarthritis of Hip and Thigh
Osteoarthritis of Knee
Osteoarthritis of Shoulder
Osteoarthritis of Spine
Osteopenia
Osteoporosis
Overweight
Painful Urination (Dysuria)
Pericardial Disease
Peripheral T-Cell Lymphoma
Peritoneal Cancer
Pinched Nerve in Back
Pleura Cancer
Pleural Cancer
Pneumonia
Polymyalgia Rheumatica (PMR)
Polyneuropathy
Polyuria
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Potassium Deficiency
Primary Central Nervous System Lymphoma
Primary Hypercoagulable State
Proteinuria
Purpura
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Radiculopathy
Rash
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Salivary Gland Cancer
Sarcoidosis
Schwannoma
Sciatica (Not Due to Disc Displacement)
Secondary Diabetes Mellitus
Secondary Malignancies
Sexually Transmitted Diseases (STDs)
Sinus Tachycardia
Sinusitis
Skin Cancer
Sleep Apnea
Soft Tissue Sarcoma
Squamous Cell Carcinoma of Skin
Stomach and Small Intestine Cancer
Testicular Cancer
Thalassemia
Throat Cancer (Hypopharyngeal)
Throat Cancer (Oropharyngeal)
Thrombosis
Thyroid Goiter
Tonsillitis
Transient Ischemic Attack (TIA)
Upper Digestive Tract Cancer
Urinary Incontinence
Urinary Stones
Uterine Diseases
Venous Insufficiency
Vitamin B12 Deficiency
Vitamin D Deficiency
Wheezing
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Anemia and Iron Deficiency Screening
Bone Marrow Biopsy
Diabetes Counseling
Erythropoietin Test
Fecal Occult Blood Test for Colorectal Cancer
Plasmapheresis

Insurance Accepted

* Please verify this information when scheduling an appointment.
  • Choice Plus POS II
    Elect Choice (Open Access) EPO
    Managed Choice (Open Access) POS
    Open Choice PPO
    Premier Care Network Plus - Innovation Health
    Savings Plus of IL OA Select
  • Lumenos plans - Blue Preferred-WI
  • Anthem Blue Cross Blue Shield HMO
    Anthem Blue Cross Blue Shield PPO
    Blue Preferred Plus POS
  • Blue Cross Blue Shield of Illinois PPO
    Blue Print PPO
  • Blue Card PPO
  • Medicare
  • HealthyBlue Advantage
  • MultiPlan PPO
  • Options PPO
    United Healthcare
  • Blue PPO

Locations

  1. 1 Ssm Health Cancer Care
    1200 John Q Hammons Dr Ste 400, Madison, WI 53717
  2. 2 Ssm Health Dean Medical Group - Janesville
    3200 E Racine St, Janesville, WI 53546
  3. 3 Ssm Health St. Mary's Hospital - Madison
    700 S Park St, Madison, WI 53715
  4. 4 Ssm Health Pharmacy
    1211 Fish Hatchery Rd, Madison, WI 53715

Patient Satisfaction

Likelihood to recommend Dr. O'Mahar
4.0
Based on 4 Reviews
5 Stars (3)
4 Stars (0)
3 Stars (0)
2 Stars (0)
1 Star (1)

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Patient Reviews
Feb 12, 2021
Dr. O'Mahar is the best in the business! She has been absolutely wonderful to myself, and my family and has saved my life. Thank you Dr. O'Mahar!
— Feb 12, 2021
See more reviews on Healthgrades
Photo: Dr. Shannon O'Mahar, MD
How would you rate your experience with Dr. Shannon O'Mahar, MD?
  • Likelihood of recommending Dr. O'Mahar to family and friends

Dr. O'Mahar's Office & Staff

  • Ease of scheduling urgent appointments
  • Office environment, cleanliness, comfort, etc.
  • Staff friendliness and courteousness
  • Total wait time (waiting & exam rooms)

Experience with Dr. O'Mahar

  • Level of trust in provider's decisions
  • 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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Telehealth Options
This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. O'Mahar, or would you like to choose another provider and have an online appointment right now?
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Call now to make an appointment
(608) 410-2700

About Me

Specialties*
Medical Oncology
Hematology
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
  • Washington University School of Medicine
    2005
Medical Education

Board Certifications

Board Certifications
  • Hematology, Internal Medicine and Medical Oncology
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.

Internship

Internship
  • Barnes - Jewish Hospital
Internship

Residency

Residency Hospital
  • Barnes-Jewish Hospital
    2008
Residency Hospital

Fellowship

Fellowship Hospital
  • University of Wisconsin Hospital and Clinics
    2012
Fellowship Hospital
Common Questions and Answers
Responses are sourced directly from patients.
Does Dr. O'Mahar communicate via email?
No users said yes.
Yes
(0)
No
(1)
Does Dr. O'Mahar offer telehealth services or virtual visits?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. O'Mahar offer an online patient portal?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. O'Mahar have free onsite parking?
1 user said yes.
Yes
(1)
No
(0)
Does Dr. O'Mahar offer weekend visits?
No responses yet.
Yes
(0)
No
(0)
Does Dr. O'Mahar offer evening visits?
No users said yes.
Yes
(0)
No
(1)
Does Dr. O'Mahar specialize in working with children or adolescents?
No responses yet.
Yes
(0)
No
(0)
Does Dr. O'Mahar specialize in working with seniors?
No responses yet.
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(0)
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Does Dr. O'Mahar specialize in couples therapy?
No responses yet.
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(0)
No
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Does Dr. O'Mahar specialize in working with LGBTQ+ community?
No responses yet.
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(0)
No
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Does Dr. O'Mahar accept insurance?
No responses yet.
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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. Shannon O'Mahar, MD. To arrange an appointment, call the number on Dr. O'Mahar's profile.

Dr. O'Mahar frequently treats the following conditions: Myelodysplastic Syndromes, Retroperitoneum Cancer and Osteosarcoma. See more on Sharecare.

Dr. Shannon O'Mahar, MD is affiliated with Prairie Ridge Health, Ssm Health Saint Mary's Hospital Madison, Edgerton Hospital And Health Services, Ssm Health Saint Clare Hospital Baraboo, Ssm Health Saint Mary's Hospital Janesville, Stoughton Hospital and Upland Hills Health.

Yes, Dr. Shannon O'Mahar, MD holds board certification in Hematology, Internal Medicine and Medical Oncology.

Hospital Affiliations

  • Prairie Ridge Health

    1515 Park Ave, Columbus, WI

  • Ssm Health Saint Mary's Hospital Madison

    700 S Park St, Madison, WI

  • Edgerton Hospital And Health Services

    11101 N Sherman Rd, Edgerton, WI

  • Ssm Health Saint Clare Hospital Baraboo

    707 14th St, Baraboo, WI

  • Ssm Health Saint Mary's Hospital Janesville

    3400 E Racine St, Janesville, WI

  • Stoughton Hospital

    900 Ridge St, Stoughton, WI

  • Upland Hills Health

    800 Compassion Way, Dodgeville, WI