The 20 Best IgG4-Related Disease Doctors Near Me in Colorado, US

Find the Top IgG4-Related Disease Experts and Specialists

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    Last Updated: 10/30/2025

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    MediFind found 32 doctor with experience in IgG4-Related Disease near Colorado, US. Of these, 30 are Experienced and 2 are Advanced.

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    32 providers found
      Experienced in IgG4-Related Disease

      Dr. Jeffrey T. Owsley

      Oncology | Hematology Oncology | Hematology
      Experienced in IgG4-Related Disease

      Dr. Jeffrey T. Owsley

      Oncology | Hematology Oncology | Hematology

      Lutheran Hospital - Cancer Centers Of CO Medical Oncology

      400 Indiana Street, Suite 300, 
      Golden, CO 
      303-403-7333
      Experience:
      17+ years
      Languages Spoken:
      English, Spanish
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Born in Kansas City, Missouri, Dr. Owsley earned his medical degree in Kansas City. He moved to Denver and completed his residency at Saint Joseph Hospital. After his residency, he worked as a hospitalist in Denver prior to starting a fellowship at the University of Tennessee in Memphis. His clinical interests surround melanoma, lymphoma and primary brain cancers.�A cancer diagnosis is an ailment that encompasses the entire person and as an oncologist, I am privileged to be a part of my patient�s journey. We would not just focus on the disease itself, but also on the effect it has on other aspects of the patient�s life. Overriding everything, we must never lose hope.�Dr. Owsley makes it a priority to be with his patients every step of the way during their cancer journey. He will fight alongside them and is readily available to assist in each patient�s unique journey.Dr. Owsley is an investigator involved in clinical research trials in the area of hematology and medical oncology.�When not at work, Dr. Owsley spends his time watching his daughter grow up. He enjoys watching sports and rooting for his favorite teams including the Kansas City Chiefs. However, his wife is a native Denverite and makes sure to balance out his love of the Chiefs with her love of the Broncos. He loves taking advantage of the amazing opportunities that the 300 days of Colorado sunshine provide. Dr. Owsley is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Paget Disease of the Breast, Breast Cancer, Lynch Syndrome, and Squamous Cell Lung Carcinoma.

      Isaac R. Melamed
      Experienced in IgG4-Related Disease

      Dr. Isaac R. Melamed

      Allergy and Immunology
      Experienced in IgG4-Related Disease

      Dr. Isaac R. Melamed

      Allergy and Immunology

      Veros Health

      1551 Professional Lane, Suite 170, 
      Longmont, CO 
      Experience:
      37+ years
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      With more than thirty-five years of experience working as a physician, Dr. Melamed is a respected leader in the fields of immunology and immune-related disease. He has spent over twenty-years researching immune-related disease, primary and secondary immune deficiency, and the link between the immune system and the central nervous system. Dr. Melamed's mission is to identify diseases early, to ensure his patient's optimal health. Dr. Melamed is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Primary Immunodeficiency (PID), Common Variable Immune Deficiency, Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus Infections, and Hereditary Angioedema.

      What does Elite, Distinguished, Advanced, Experienced mean?
      Edan Sarid
      Experienced in IgG4-Related Disease

      Dr. Edan Sarid

      Allergy and Immunology | Pediatrics
      Experienced in IgG4-Related Disease

      Dr. Edan Sarid

      Allergy and Immunology | Pediatrics

      Veros Clinical Services LLC

      6801 S Yosemite St, Suite 170, 
      Centennial, CO 
      303-773-9000
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Dr. Sarid is a dedicated board-certified physician specializing in the practice of adult and pediatric allergy, asthma and immunology. His particular interest is in managing complex immunologic and allergic diseases through the identification and modification of defects in the immune system that cause inflammation. Dr. Sarid began his career in New York as a pediatric hospitalist and urgent care physician and then pursued his life-long interest in allergy, asthma and immunology by completing a subspecialty fellowship at the State University of New York Downstate Medical Center in Brooklyn. There he completed multiple research projects on the long term effects of chronic treatments in immune diseases.After moving to Colorado and joining IMMUNOe Health Centers, Dr. Sarid is utilizing his background in pediatrics and global medicine to provide devoted and passionate care for his patients and for cutting-edge clinical research. Outside of medicine, Dr. Sarid finds leisure in composing and performing his music on the piano as well as discovering Colorado’s beautiful outdoors with his family. Dr. Sarid is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Hereditary Angioedema, and Hyperphenylalaninemia Due to Dehydratase Deficiency.

      Learn about our expert tiers
      Advanced in IgG4-Related Disease

      Dr. Harry D. Fischer

      Rheumatology
      Advanced in IgG4-Related Disease

      Dr. Harry D. Fischer

      Rheumatology

      National Jewish Health

      1400 Jackson St, 
      Denver, CO 
      303-398-1355
      Languages Spoken:
      English
      See accepted insurances

      Harry Fischer is a Rheumatologist in Denver, Colorado. Dr. Fischer is rated as an Advanced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Rhizomelic Pseudopolyarthritis, Polymyalgia Rheumatica, IgG4-Related Disease, and Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus Infections.

      Advanced in IgG4-Related Disease

      Dr. Liudmila M. Kastsianok

      Rheumatology
      Advanced in IgG4-Related Disease

      Dr. Liudmila M. Kastsianok

      Rheumatology

      University Physicians Incorporated

      12605 E 16th Ave, Uchealth Anschutz Medical, 
      Aurora, CO 
      720-848-0000
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Liudmila Kastsianok is a Rheumatologist in Aurora, Colorado. Dr. Kastsianok is rated as an Advanced provider by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Systemic Sclerosis (SSc), Scleroma, Rheumatoid Arthritis (RA), and Scleroderma. Dr. Kastsianok is currently accepting new patients.

      Mehrnaz Maleki
      Experienced in IgG4-Related Disease

      Dr. Mehrnaz Maleki

      Rheumatology
      Experienced in IgG4-Related Disease

      Dr. Mehrnaz Maleki

      Rheumatology

      National Jewish Health Main Campus

      1400 Jackson Street, 
      Denver, CO 
      877-225-5654
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Mehrnaz Maleki is a Rheumatologist in Denver, Colorado. Dr. Maleki is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Sjogren Syndrome, Systemic Sclerosis (SSc), Scleroderma, and Scleroma. Dr. Maleki is currently accepting new patients.

      Experienced in IgG4-Related Disease

      Dr. Janelle C. Laughlin

      Rheumatology
      Experienced in IgG4-Related Disease

      Dr. Janelle C. Laughlin

      Rheumatology

      Poudre Valley Medical Group LLC

      1925 Mountain View Ave, 
      Longmont, CO 
      303-776-1234
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Janelle Laughlin is a Rheumatologist in Longmont, Colorado. Dr. Laughlin is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Rheumatoid Arthritis (RA), Necrotizing Vasculitis, Undifferentiated Connective Tissue Disease (UCTD), and Rhizomelic Pseudopolyarthritis. Dr. Laughlin is currently accepting new patients.

      Experienced in IgG4-Related Disease

      Dr. Melissa R. Griffith

      Rheumatology
      Experienced in IgG4-Related Disease

      Dr. Melissa R. Griffith

      Rheumatology

      University Physicians Incorporated

      13123 E 16th Ave, 
      Aurora, CO 
      720-777-1234
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Melissa Griffith is a Rheumatologist in Aurora, Colorado. Dr. Griffith is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Scleroderma, Systemic Sclerosis (SSc), Scleroma, and Rheumatoid Arthritis (RA). Dr. Griffith is currently accepting new patients.

      Experienced in IgG4-Related Disease

      Dr. Amanda L. Piquet

      Neurology
      Experienced in IgG4-Related Disease

      Dr. Amanda L. Piquet

      Neurology

      University Physicians Incorporated

      1635 Aurora Ct, 
      Aurora, CO 
      720-848-0000
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Amanda Piquet is a Neurologist in Aurora, Colorado. Dr. Piquet is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Encephalitis, Stiff Person Syndrome, Anti-NMDA Receptor Encephalitis, and Rasmussen Encephalitis. Dr. Piquet is currently accepting new patients.

      Experienced in IgG4-Related Disease

      Dr. Jason R. Kolfenbach

      Rheumatology
      Experienced in IgG4-Related Disease

      Dr. Jason R. Kolfenbach

      Rheumatology

      University Physicians Incorporated

      12605 E 16th Ave, Uchealth Anschutz Medical Campus, 
      Aurora, CO 
      720-848-0000
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Jason Kolfenbach is a Rheumatologist in Aurora, Colorado. Dr. Kolfenbach is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Rheumatoid Arthritis (RA), Granulomatosis with Polyangiitis, Temporal Arteritis, and Juvenile Temporal Arteritis.

      Experienced in IgG4-Related Disease

      Dr. Lance K. Lassiter

      Hematology Oncology | Hematology | Oncology
      Experienced in IgG4-Related Disease

      Dr. Lance K. Lassiter

      Hematology Oncology | Hematology | Oncology

      Montrose Memorial Hospital, Inc

      816 S 5th St, 
      Montrose, CO 
      970-240-7132
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Lance Lassiter is a Hematologist Oncology specialist and a Hematologist in Montrose, Colorado. Dr. Lassiter is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Breast Cancer, Paget Disease of the Breast, Paroxysmal Nocturnal Hemoglobinuria (PNH), and Transient Erythroblastopenia of Childhood. Dr. Lassiter is currently accepting new patients.

      Experienced in IgG4-Related Disease

      Dr. Jill C. Carnahan

      Family Medicine
      Experienced in IgG4-Related Disease

      Dr. Jill C. Carnahan

      Family Medicine
      400 S Mccaslin Blvd, Suite 210, 
      Louisville, CO 
      303-993-7910
      Languages Spoken:
      English
      See accepted insurances

      Jill Carnahan is a primary care provider, practicing in Family Medicine in Louisville, Colorado. Dr. Carnahan is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus Infections, Light Chain Deposition Disease (LCDD), MAGIC Syndrome, and IgG4-Related Disease.

      Experienced in IgG4-Related Disease

      Dr. Sujatha Nallapareddy

      Hematology
      Experienced in IgG4-Related Disease

      Dr. Sujatha Nallapareddy

      Hematology

      Rocky Mountain Cancer Centers Llp

      10103 Ridgegate Pkwy, G01, 
      Lone Tree, CO 
      303-925-0700
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Sujatha Nallapareddy is a Hematologist in Lone Tree, Colorado. Dr. Nallapareddy is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Colorectal Cancer, Familial Colorectal Cancer, Lynch Syndrome, and Iron Deficiency Anemia.

      Experienced in IgG4-Related Disease

      Dr. Thomas E. Ragole

      Neurology | Hospital Medicine
      Experienced in IgG4-Related Disease

      Dr. Thomas E. Ragole

      Neurology | Hospital Medicine

      University Physicians Incorporated

      13123 E 16th Ave, 
      Aurora, CO 
      720-777-1234
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Thomas Ragole is a Neurologist and a Hospital Medicine provider in Aurora, Colorado. Dr. Ragole is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Myasthenia Gravis, Spinal and Bulbar Muscular Atrophy, Spinal Muscular Atrophy Type 3, and Spinal Muscular Atrophy (SMA). Dr. Ragole is currently accepting new patients.

      Experienced in IgG4-Related Disease

      Dr. Mark A. Sitarik

      Hematology Oncology | Hematology | Oncology
      Experienced in IgG4-Related Disease

      Dr. Mark A. Sitarik

      Hematology Oncology | Hematology | Oncology

      Rocky Mountain Cancer Centers Llp

      4715 Arapahoe Ave, 
      Boulder, CO 
      303-385-2000
      Experience:
      44+ years
      Languages Spoken:
      English
      See accepted insurances
      Offers Telehealth

      Mark Sitarik is a Hematologist Oncology specialist and a Hematologist in Boulder, Colorado. Dr. Sitarik has been practicing medicine for over 44 years and is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Heyde Syndrome, Von Willebrand Disease (VWD), Paget Disease of the Breast, and Breast Cancer.

      Experienced in IgG4-Related Disease

      Dr. Mladen Perak

      Internal Medicine
      Experienced in IgG4-Related Disease

      Dr. Mladen Perak

      Internal Medicine

      East Denver Medical Offices

      10400 E Alameda Ave, 
      Denver, CO 
      303-338-4545
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Mladen Perak is a primary care provider, practicing in Internal Medicine in Denver, Colorado. Dr. Perak is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Polymyositis, Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus Infections, IgG4-Related Disease, and Light Chain Deposition Disease (LCDD). Dr. Perak is currently accepting new patients.

      Experienced in IgG4-Related Disease

      Dr. William S. Allan

      Internal Medicine
      Experienced in IgG4-Related Disease

      Dr. William S. Allan

      Internal Medicine

      Wheat Ridge Internal Medicine PC

      7821 W 38th Ave, 
      Wheat Ridge, CO 
      303-422-2343
      Languages Spoken:
      English
      See accepted insurances

      William Allan is a primary care provider, practicing in Internal Medicine in Wheat Ridge, Colorado. Dr. Allan is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are High Cholesterol, Familial Hypertension, Glucocorticoid-Remediable Aldosteronism, and Hypertension.

      Experienced in IgG4-Related Disease

      Dr. Stanton R. Elzi

      Hospital Medicine
      Experienced in IgG4-Related Disease

      Dr. Stanton R. Elzi

      Hospital Medicine

      Midtown Inpatient Medicine

      835 East 18th Avenue, Suite 110, 
      Denver, CO 
      303-825-4646
      Experience:
      36+ years
      Languages Spoken:
      English
      See accepted insurances

      Stanton Elzi is a primary care provider, practicing in Hospital Medicine in Denver, Colorado. Dr. Elzi has been practicing medicine for over 36 years and is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Hypertension, Glucocorticoid-Remediable Aldosteronism, Familial Hypertension, and Autoerythrocyte Sensitivity.

      Experienced in IgG4-Related Disease

      Dr. Elena M. Weinstein

      Rheumatology
      Experienced in IgG4-Related Disease

      Dr. Elena M. Weinstein

      Rheumatology

      University Physicians Incorporated

      9548 Park Meadows Dr, 
      Lone Tree, CO 
      720-848-2200
      Languages Spoken:
      English
      See accepted insurances
      Accepting New Patients
      Offers Telehealth

      Elena Weinstein is a Rheumatologist in Lone Tree, Colorado. Dr. Weinstein is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. Her top areas of expertise are Rheumatoid Arthritis (RA), Psoriatic Arthritis, Rhizomelic Pseudopolyarthritis, and Polymyalgia Rheumatica. Dr. Weinstein is currently accepting new patients.

      Experienced in IgG4-Related Disease

      Dr. Austin I. Poole

      Hematology Oncology | Radiation Oncology | Hematology
      Experienced in IgG4-Related Disease

      Dr. Austin I. Poole

      Hematology Oncology | Radiation Oncology | Hematology

      Rocky Mountain Cancer Centers Llp

      4715 Arapahoe Ave, 
      Boulder, CO 
      303-385-2000
      Languages Spoken:
      English
      See accepted insurances

      Austin Poole is a Hematologist Oncology specialist and a Radiation Oncologist in Boulder, Colorado. Dr. Poole is rated as an Experienced provider by MediFind in the treatment of IgG4-Related Disease. His top areas of expertise are Prostate Cancer, Colorectal Cancer, Familial Colorectal Cancer, and Familial Prostate Cancer.

      Showing 1-20 of 32

      Last Updated: 10/30/2025

      What is the definition of IgG4-Related Disease?

      IgG4-related disease (IgG4-RD) is an autoimmune disorder in which patients have elevated blood levels of IgG4, the most common form of immunoglobulin that circulates in the blood. Increased levels of IgG4 can cause inflammation in a single organ or in multiple organs, such as the meninges (tissue surrounding brain and spinal cord), the eye sockets, lacrimal (tear duct) glands, salivary glands, thyroid gland, lungs, aorta, kidneys, bladder, pancreas, and bile ducts. IgG4-related disease most often affects middle-aged and elderly males, and rarely, children.

      When should I see an IgG4-Related Disease doctor in Colorado, US?

      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 an IgG4-Related Disease doctor in Colorado, US?

      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 do I find the best IgG4-Related Disease doctor in Colorado, US?

      You can find an IgG4-Related Disease doctor in any of the 10 largest U.S. cities by clicking below:

      IgG4-Related Disease doctor near New York, NY
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      IgG4-Related Disease doctor near Philadelphia, PA
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      IgG4-Related Disease doctor near Boston, MA
      IgG4-Related Disease doctor near Dallas, TX
      IgG4-Related Disease doctor near San Jose, CA

      How does MediFind rank IgG4-Related Disease doctors in Colorado, US?

      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 IgG4-Related Disease doctors in Colorado, US?

      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 an IgG4-Related Disease doctor in Colorado, US?

      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 IgG4-Related Disease doctor search results page. 

      Why is it important to get a second opinion from a different IgG4-Related Disease 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 an IgG4-Related Disease doctor in Colorado, US?

      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 IgG4-Related Disease 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 IgG4-Related Disease 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 IgG4-Related Disease doctors in Colorado, US?

      Look for the filter feature on the left side of the IgG4-Related Disease 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 an IgG4-Related Disease doctor that offers video calls?

      Look for the filter feature on the left-side of the IgG4-Related Disease 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 

      Read more about our Content Policy. 

      More IgG4-Related Disease Doctors by city

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