The 20 Best Protein S Deficiency Doctors Near Me in Naperville, IL

Find the Top Protein S Deficiency Experts and Specialists

The 20 Best Protein S Deficiency Doctors near Naperville, IL

Last Updated: 02/22/2026

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MediFind found 29 doctor with experience in Protein S Deficiency near Naperville, IL. Of these, 28 are Experienced and 1 are Advanced.

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29 providers found
    Sujith J. Kalathiveetil
    Experienced in Protein S Deficiency
    Experienced in Protein S Deficiency
    100 Spalding Drive, Suite 400, 
    Naperville, IL 
     (0.7 miles away)
    Experience:
    24+ years
    Languages Spoken:
    English

    As a result of many recent advances in the field of cardiovascular disease, we have a variety of procedures and medications to offer our patients. I believe in carefully educating my patients, so that they are able to choose the treatment that best reflects their wishes. My role is to be your medical advisor, guide and advocate. Dr. Kalathiveetil is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Heart Failure with Preserved Ejection Fraction (HFpEF), Aortic Valve Stenosis, Atrial Fibrillation, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

    William Broderick
    Experienced in Protein S Deficiency
    Hematology | Oncology
    Experienced in Protein S Deficiency
    Hematology | Oncology

    Endeavor Health Medical Group

    120 Spalding Dr., Suite 111, 
    Naperville, IL 
     (0.7 miles away)
    Languages Spoken:
    English

    William R. Broderick, MD, a hematology and oncology specialist at Endeavor Health, cares for patients with a wide range of cancer and blood-related conditions. His clinical expertise includes neuro-oncology, hematologic disorders and general oncology. Dr. Broderick provides evidence-based care grounded in strong patient relationships, helping individuals navigate their diagnosis and treatment with clarity and compassion. Dr. Broderick is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Gliosarcoma, Astrocytoma, Familial Colorectal Cancer, Embryonal Tumor with Multilayered Rosettes, and Bone Marrow Aspiration.

    Matthew Siegel
    Experienced in Protein S Deficiency
    Hematology | Oncology
    Experienced in Protein S Deficiency
    Hematology | Oncology

    Endeavor Health Medical Group

    120 Spalding Dr., Suite 111, 
    Naperville, IL 
     (0.7 miles away)
    Languages Spoken:
    English

    Matthew Siegel, MD, a hematologist and medical oncologist at Endeavor Health, cares for patients with all types of cancer and blood disorders. He takes time to educate patients and their families about each diagnosis and works closely with them to navigate complex decisions around treatment. Dr. Siegel’s approach is rooted in collaboration and empathy, treating every patient as he would a friend or family member. Dr. Siegel is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Childhood Iron Deficiency Anemia, Upper Tract Urothelial Carcinoma (UTUC), Melanoma, Lung Cancer, and Bone Marrow Aspiration.

    Learn about our expert tiers
    Maria Quejada
    Experienced in Protein S Deficiency
    Oncology | Hematology
    Experienced in Protein S Deficiency
    Oncology | Hematology

    Endeavor Health Medical Group

    120 Spalding Dr., Suite 111, 
    Naperville, IL 
     (0.7 miles away)
    Languages Spoken:
    English, Filipino, Spanish

    Maria Quejada, MD, a medical oncologist and hematologist at Endeavor Health, specializes in developing personalized treatment plans to help patients navigate their cancer journey. Her approach blends evidence-based medicine with compassion, collaboration and a strong emphasis on patient-centered care. Dr. Quejada is particularly interested in precision medicine and targeted therapies that tailor treatments to each patient’s unique tumor profile. Dr. Quejada is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. Her top areas of expertise are Lung Cancer, Non-Small Cell Lung Cancer (NSCLC), Pleuropulmonary Blastoma, and Small Cell Lung Cancer (SCLC).

    Rand Naffouje
    Experienced in Protein S Deficiency
    Hematology | Oncology
    Experienced in Protein S Deficiency
    Hematology | Oncology

    Endeavor Health Medical Group

    120 Spalding Dr., Suite 111, 
    Naperville, IL 
     (0.7 miles away)
    Languages Spoken:
    English, Arabic

    Rand Naddouje, MD, a hematologist and medical oncologist at Endeavor Health, provides personalized care for patients with cancer and blood disorders. She uses the most current treatments and innovations in oncology to support each individual’s care journey. Dr. Naddouje approaches every patient with compassion and strives to deliver care the way she would want it delivered to herself or a loved one. Dr. Naffouje is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. Her top areas of expertise are Childhood Iron Deficiency Anemia, Iron Deficiency Anemia, Paget Disease of the Breast, and Breast Cancer.

    William Stephan
    Experienced in Protein S Deficiency
    Interventional Cardiology | Cardiology | Internal Medicine
    Experienced in Protein S Deficiency
    Interventional Cardiology | Cardiology | Internal Medicine

    Midwest Cardiovascular Institute

    10 Martin Avenue, Suite 200, 
    Naperville, IL 
     (1.0 miles away)
    Languages Spoken:
    English

    William Stephan is a Cardiologist and an Interventional Cardiologist in Naperville, Illinois. Dr. Stephan is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Coronary Heart Disease, Atherosclerosis, Angina, Aortic Valve Replacement, and Transcatheter Aortic Valve Replacement (TAVR).

    Ann Davis
    Experienced in Protein S Deficiency
    Cardiology
    Experienced in Protein S Deficiency
    Cardiology

    Midwest Cardiovascular Institute

    10 Martin Avenue, Suite 200, 
    Naperville, IL 
     (1.0 miles away)
    Languages Spoken:
    English

    Ann Davis is a Cardiologist in Naperville, Illinois. Dr. Davis is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. Her top areas of expertise are Carotid Artery Disease, Coronary Heart Disease, Hypertensive Heart Disease, and Sitosterolemia.

    Mark Tatara
    Experienced in Protein S Deficiency
    Internal Medicine
    Experienced in Protein S Deficiency
    Internal Medicine

    Advocate Medical Group Internal Medicine

    6840 Main St, 
    Downers Grove, IL 
     (7.5 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Mark Tatara is a primary care provider, practicing in Internal Medicine in Downers Grove, Illinois. Dr. Tatara is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Pulmonary Edema, Heart Failure, Glucocorticoid-Remediable Aldosteronism, and Familial Hypertension.

    Advanced in Protein S Deficiency
    Hematology | Oncology
    Advanced in Protein S Deficiency
    Hematology | Oncology

    Edward Hospital Cancer Center-Napervil

    120 Spalding Dr Ste 111, 
    Naperville, IL 
     (1.0 miles away)
    Languages Spoken:
    English

    Joseph Kash is a Hematologist and an Oncologist in Naperville, Illinois. Dr. Kash is rated as an Advanced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Paget Disease of the Breast, Breast Cancer, Angiosarcoma, Inflammatory Breast Cancer, and Bone Marrow Aspiration.

    Experienced in Protein S Deficiency
    Hematology | Oncology
    Experienced in Protein S Deficiency
    Hematology | Oncology

    Edward Hospital Cancer Center-Napervil

    120 Spalding Dr Ste 111, 
    Naperville, IL 
     (1.0 miles away)
    Languages Spoken:
    English

    Mansoina Baweja is a Hematologist and an Oncologist in Naperville, Illinois. Dr. Baweja is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. Her top areas of expertise are Breast Cancer, Paget Disease of the Breast, Inflammatory Breast Cancer, and Angiosarcoma.

    Experienced in Protein S Deficiency
    Family Medicine
    Experienced in Protein S Deficiency
    Family Medicine

    Edward Health Ventures

    1247 Rickert Dr Ste 201, 
    Naperville, IL 
     (1.0 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Ronald Glas is a primary care provider, practicing in Family Medicine in Naperville, Illinois. Dr. Glas is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are High Cholesterol, Familial Combined Hyperlipidemia, Xanthoma, and Cirrhosis.

    Experienced in Protein S Deficiency
    Family Medicine
    Experienced in Protein S Deficiency
    Family Medicine

    Edward Health Ventures

    1220 Hobson Rd Ste 104, 
    Naperville, IL 
     (1.0 miles away)
    Languages Spoken:
    English

    Patrick O'donnell is a primary care provider, practicing in Family Medicine in Naperville, Illinois. Dr. O'donnell is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Sitosterolemia, Eosinophilic Enteropathy, Cholangiocarcinoma (Bile Duct Cancer), and Multiple Myeloma.

    Experienced in Protein S Deficiency
    Internal Medicine
    Experienced in Protein S Deficiency
    Internal Medicine

    Naperville Senior Care LLC

    2255 Monarch Dr, 
    Naperville, IL 
     (4.8 miles away)
    Languages Spoken:
    English

    Constantine Wonais is a primary care provider, practicing in Internal Medicine in Naperville, Illinois. Dr. Wonais is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Osmotic Diuresis, Glucocorticoid-Remediable Aldosteronism, Hypertension, and Familial Hypertension.

    Jason M. Carter
    Experienced in Protein S Deficiency
    Family Medicine
    Experienced in Protein S Deficiency
    Family Medicine
    2001 Wiesbrook Rd, 
    Wheaton, IL 
     (6.5 miles away)
    Experience:
    24+ years
    Languages Spoken:
    English
    Offers Telehealth

    Jason Carter is a primary care provider, practicing in Family Medicine in Wheaton, Illinois. Dr. Carter has been practicing medicine for over 24 years and is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Sitosterolemia, High Cholesterol, Hyperlipidemia Type 3, and Glucocorticoid-Remediable Aldosteronism.

    Ronald G. Severino
    Experienced in Protein S Deficiency
    Family Medicine
    Experienced in Protein S Deficiency
    Family Medicine
    2001 Gary Ave Ste 110, 
    Wheaton, IL 
     (8.7 miles away)
    Experience:
    30+ years
    Languages Spoken:
    English
    Offers Telehealth

    Ronald Severino is a primary care provider, practicing in Family Medicine in Wheaton, Illinois. Dr. Severino has been practicing medicine for over 30 years and is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Nontuberculous Mycobacterial Lung Disease, Hyperlipidemia Type 3, Mycobacterium Avium Complex Infections, and Premature Ovarian Failure.

    Amaryllis Gil
    Experienced in Protein S Deficiency
    Hematology | Oncology
    Experienced in Protein S Deficiency
    Hematology | Oncology

    Endeavor Health Medical Group

    177 E. Brush Hill Rd., Cancer Center, 
    Elmhurst, IL 
     (13.5 miles away)
    Languages Spoken:
    English

    Amaryllis Gil, MD, a medical oncologist and hematologist at Endeavor Health, specializes in treating patients with breast cancer, general oncology, and both benign and malignant blood disorders. She partners closely with patients and their families throughout the cancer journey, emphasizing education, quality of life and long-term wellness. Dr. Gil is encouraged by the rapid advancement of targeted therapies, which offer new hope with fewer side effects, and empowers patients to play an active role in their care. Dr. Gil is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. Her top areas of expertise are Testicular Cancer, Teratoma of the Mediastinum, Paget Disease of the Breast, and Breast Cancer.

    Experienced in Protein S Deficiency
    Hematology
    Experienced in Protein S Deficiency
    Hematology

    UChicago Medicine AdventHealth Hematology & Oncology Bolingbrook

    396 Remington Blvd Ste 305, 
    Bolingbrook, IL 
     (5.3 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Saud Rana is a Hematologist in Bolingbrook, Illinois. Dr. Rana is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Prostate Cancer, and Familial Prostate Cancer. Dr. Rana is currently accepting new patients.

    Experienced in Protein S Deficiency
    Internal Medicine
    Experienced in Protein S Deficiency
    Internal Medicine

    Office

    430 Pennsylvania Ave Ste 310, 
    Glen Ellyn, IL 
     (9.2 miles away)
    Languages Spoken:
    English

    Caroline Wolfe is a primary care provider, practicing in Internal Medicine in Glen Ellyn, Illinois. Dr. Wolfe is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. Her top areas of expertise are Factor V Leiden Thrombophilia, Acute Cystitis, Maturity Onset Diabetes of the Young, and Protein S Deficiency.

    William T. O'rourke
    Experienced in Protein S Deficiency
    Internal Medicine
    Experienced in Protein S Deficiency
    Internal Medicine

    Advocate Medical Group Internal Medicine

    454 E Roosevelt Rd, 
    Lombard, IL 
     (10.8 miles away)
    Languages Spoken:
    English

    William O'rourke is a primary care provider, practicing in Internal Medicine in Lombard, Illinois. Dr. O'rourke is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Richter Syndrome, Chronic Lymphocytic Leukemia (CLL), Chronic B-Cell Leukemia (CBCL), Hip Replacement, and Ureteroscopy.

    Milton Legrand
    Experienced in Protein S Deficiency
    Internal Medicine
    Experienced in Protein S Deficiency
    Internal Medicine
    40 S. Clay St., East Building, Suite 210, 
    Hinsdale, IL 
     (11.8 miles away)
    Experience:
    39+ years
    Languages Spoken:
    English

    My goal is to provide excellent, compassionate patient care while also educating my patients about disease and in particular disease prevention. Dr. Legrand is rated as an Experienced provider by MediFind in the treatment of Protein S Deficiency. His top areas of expertise are Osteoarthritis, Chronic Obstructive Pulmonary Disease (COPD), Lung Metastases, and Lung Cancer.

    Showing 1-20 of 29

    Last Updated: 02/22/2026

    What is the definition of Protein S Deficiency?

    Protein S deficiency is a disorder that increases the risk of developing blood clots. People with protein S deficiency are at risk of developing a type of clot called a deep vein thrombosis (DVT) that occurs in the deep veins of the arms or legs. A DVT can travel through the bloodstream and lodge in the lungs, causing a life-threatening clot called a pulmonary embolism (PE). Both DVTs and PEs are a type of venous thromboembolism, a general term for blood clots that form in a vein. Factors such as age, surgery, immobility, or pregnancy can increase the risk of clotting in people with protein S deficiency. In addition, people who have protein S deficiency and another inherited blood clotting disorder may have a higher risk of developing blood clots. Venous thromboembolism occurs in approximately fifty to sixty percent of people with protein S deficiency.

    When should I see a Protein S Deficiency doctor near Naperville, IL?

    There are various reasons why you may want to see a specialist, such as: 

    • Your primary care provider recommends it. 
    • Your condition requires expert knowledge and specialized care. 
    • Your symptoms persist or worsen despite treatment. 
    • You need specialized testing or procedures. 
    • You want a second opinion.  

    What should I consider when choosing a Protein S Deficiency doctor near Naperville, IL?

    It’s important to see a provider with expertise in your specific condition. Each provider profile in MediFind’s doctor database includes information on which conditions they treat, years of experience, research contributions, languages spoken, insurance plans accepted, and more.  

    How does MediFind rank Protein S Deficiency doctors near Naperville, IL?

    MediFind’s rankings are based on a variety of data sources, such as the number of articles a doctor has published in medical journals, participation in clinical trials and industry conferences, as well as the number of patients that provider sees for a given condition. Note that MediFind’s provider database is not based on user reviews, and providers do not pay to be included in the database. 

    What types of insurance are accepted by Protein S Deficiency doctors near Naperville, IL?

    Most profiles in MediFind’s doctor database include a list of insurance plans accepted by that provider. However, it’s a good idea to contact the provider’s office to make sure they still accept your insurance, then doublecheck by contacting your insurance plan to confirm they’re in network. 

    How can I book an appointment online with a Protein S Deficiency doctor near Naperville, IL?

    MediFind offers direct scheduling for certain providers using the “Request Appointment” button on that provider’s profile. If the schedule option is not available for a provider, tap the red “Show Phone Number” button on their profile to get their contact information. If you prefer to find providers who offer online scheduling, select “Schedules online” under the “Availability” category of the filter feature on the left side of the Protein S Deficiency doctor search results page. 

    Why is it important to get a second opinion from a different Protein S Deficiency doctor?

    Second opinions are an opportunity to confirm a diagnosis and its root cause, learn about alternative treatment options, or simply gain peace of mind. Many people, especially those with serious diagnoses, get second opinions so they can understand all their options and make informed decisions, so don’t hesitate to get one if you have any doubts or need more information or clarification regarding your care. Note that some insurance plans require second opinions, while others don’t cover second opinions, so be sure to confirm with your insurance provider first.   

    How can I prepare for my appointment with a Protein S Deficiency doctor near Naperville, IL?

    Prepare for your appointment by gathering the following items: 

    • Copies of medical records (dating back at least one year) 
    • Your medical history, including illnesses, medical conditions, surgeries, and other doctors you see 
    • Family history of disease 
    • List of current prescription drugs, over-the-counter medicines, vitamins, and herbal remedies or supplements including names and doses 
    • Allergies to medications, food, latex, insects, etc.  
    • List of questions and concerns 
    • Your insurance card 

    You might also contact the provider’s office to see if they offer transportation or childcare services or if you’re allowed to bring a loved one for support or to take notes during your visit. 

    What questions should I ask my Protein S Deficiency doctor?

    Here are some sample questions: 

    • Can you explain in simple terms what this condition is and how it’s treated? 
    • What symptoms or side effects should I watch for? 
    • What tests will be involved, and when can I expect results? 
    • Are there other specialists I need to see? 
    • What’s the best way to reach you if I have follow-up questions? 

    How can I learn about the latest clinical trials and research advances my Protein S Deficiency doctor may know about?

    MediFind’s Clinical Trials tool asks you a series of questions to help you narrow down your search by health condition, age, gender, location, how far you’re willing to travel, and more. Each question you answer filters down the number of trials until you find the ones that are most relevant to you. 

    MediFind’s Latest Advances tool features summaries of recent articles published in medical journals. We use cutting-edge technology to scour medical publication databases for the latest research advancements on any given condition, then we simplify this information in a way that’s useful and easy to understand. 

    Can I filter my search to show male or female Protein S Deficiency doctors near Naperville, IL?

    Look for the filter feature on the left side of the Protein S Deficiency doctor search results page. Select “Female” or “Male” under the “Gender” category to search for female or male providers exclusively. If the “Any” option is selected, it will pull results for both male and female providers. 

    Can I filter my search to find a Protein S Deficiency doctor that offers video calls?

    Look for the filter feature on the left-side of the Protein S Deficiency doctor search results page. Select “Offers telehealth visits” under the Availability category to search for providers who offer virtual appointments (video calls). 

    Reviewed on: 11/11/24  

    By: MediFind Medical Staff 

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