The 20 Best Primary Immunodeficiency (PID) Doctors Near Me in Longmont, CO

Find the Top Primary Immunodeficiency (PID) Experts and Specialists

Last Updated: 04/28/2026

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MediFind found 27 doctor with experience in Primary Immunodeficiency (PID) near Longmont, CO. Of these, 23 are Experienced, 3 are Advanced and 1 are Elite.

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27 providers found
    Isaac Melamed
    Elite in Primary Immunodeficiency (PID)
    Allergy and Immunology
    Elite in Primary Immunodeficiency (PID)
    Allergy and Immunology

    Veros Health

    1551 Professional Lane, Suite 170, 
    Longmont, CO 
     (1.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Isaac Melamed is an Allergy and Immunologist in Longmont, Colorado. Dr. Melamed is rated as an Elite provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Primary Immunodeficiency (PID), Common Variable Immune Deficiency, Pediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcus Infections, and Hereditary Angioedema. Dr. Melamed is currently accepting new patients.

    Edan Sarid
    Advanced in Primary Immunodeficiency (PID)
    Allergy and Immunology
    Advanced in Primary Immunodeficiency (PID)
    Allergy and Immunology

    Veros Health

    1551 Professional Lane, Suite 170, 
    Longmont, CO 
     (1.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Edan Sarid is an Allergy and Immunologist in Longmont, Colorado. Dr. Sarid is rated as an Advanced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Hereditary Angioedema, and Hyperphenylalaninemia Due to Dehydratase Deficiency. Dr. Sarid is currently accepting new patients.

    Advanced in Primary Immunodeficiency (PID)
    Allergy and Immunology
    Advanced in Primary Immunodeficiency (PID)
    Allergy and Immunology

    Veros Clinical Services, Inc.

    1551 Professional Ln, Ste 280, 
    Longmont, CO 
     (1.9 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Kevin O'brien is an Allergy and Immunologist in Longmont, Colorado. Dr. O'brien is rated as an Advanced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Common Variable Immune Deficiency, Primary Immunodeficiency (PID), Complement Component 2 Deficiency, and Hereditary Angioedema. Dr. O'brien is currently accepting new patients.

    Learn about our expert tiers
    Experienced in Primary Immunodeficiency (PID)
    Allergy and Immunology
    Experienced in Primary Immunodeficiency (PID)
    Allergy and Immunology

    Veros Clinical Services LLC

    1551 Professional Ln Unit 170, 
    Longmont, CO 
     (0.2 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Paul Sklarew is an Allergy and Immunologist in Longmont, Colorado. Dr. Sklarew is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Allergic Rhinitis, Sinusitis, Grass Allergy, and Common Variable Immune Deficiency. Dr. Sklarew is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Experienced in Primary Immunodeficiency (PID)

    Rocky Mountain Cancer Centers

    1760 E Ken Pratt Blvd Ste 301, 
    Longmont, CO 
     (3.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    John Barnett is an Oncologist in Longmont, Colorado. Dr. Barnett is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Appendix Cancer, Colorectal Cancer, Familial Colorectal Cancer, and Paget Disease of the Breast. Dr. Barnett is currently accepting new patients.

    Alessandro Testori
    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine
    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine

    Boulder Community Health-Boulder Heart

    2101 Ken Pratt Blvd Ste 104, 
    Longmont, CO 
     (2.2 miles away)
    Languages Spoken:
    English

    Alessandro Testori is a primary care provider, practicing in Internal Medicine in Longmont, Colorado. Dr. Testori is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Kaposi Sarcoma, Neuroblastoma, Neural Crest Tumor, Lymphadenectomy, and Endoscopy.

    Experienced in Primary Immunodeficiency (PID)
    Hematology
    Experienced in Primary Immunodeficiency (PID)
    Hematology

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Leslie Busby is a Hematologist in Boulder, Colorado. Dr. Busby is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Familial Colorectal Cancer, Adult Soft Tissue Sarcoma, Bone Tumor, Thrombectomy, and Bone Marrow Aspiration. Dr. Busby is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Experienced in Primary Immunodeficiency (PID)

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Mark Sitarik is an Oncologist in Boulder, Colorado. Dr. Sitarik is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Von Willebrand Disease (VWD), Heyde Syndrome, Paget Disease of the Breast, and Breast Cancer. Dr. Sitarik is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Experienced in Primary Immunodeficiency (PID)

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Austin Poole is an Oncologist in Boulder, Colorado. Dr. Poole is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Prostate Cancer, Colorectal Cancer, Familial Colorectal Cancer, and Familial Prostate Cancer. Dr. Poole is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Experienced in Primary Immunodeficiency (PID)

    Rocky Mountain Cancer Centers

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Gregory Britt is a Hematologist in Boulder, Colorado. Dr. Britt is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Hodgkin Lymphoma, Acute Mountain Sickness, Adult Soft Tissue Sarcoma, and Childhood Iron Deficiency Anemia. Dr. Britt is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Experienced in Primary Immunodeficiency (PID)

    Rocky Mountain Cancer Centers LLP

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Lori Jensen is an Oncologist in Boulder, Colorado. Dr. Jensen is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Paget Disease of the Breast, Breast Cancer, Small Lymphocytic Lymphoma (SLL), and Inflammatory Breast Cancer. Dr. Jensen is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Experienced in Primary Immunodeficiency (PID)

    Rocky Mountain Cancer Centers LLP

    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    David Andorsky is an Oncologist in Boulder, Colorado. Dr. Andorsky is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Follicular Lymphoma, Chronic B-Cell Leukemia (CBCL), Chronic Lymphocytic Leukemia (CLL), and Richter Syndrome. Dr. Andorsky is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine
    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine

    Boulder Medical Center

    2750 Broadway St, Internal Medicine Dept, 
    Boulder, CO 
     (13.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Emma Mccarty is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Mccarty is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Sitosterolemia, Psoriatic Arthritis, Psoriasis, and Hypothyroidism. Dr. Mccarty is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Allergy and Immunology | Pediatrics
    Experienced in Primary Immunodeficiency (PID)
    Allergy and Immunology | Pediatrics

    Boulder Medical Center

    2750 Broadway St, Urology, 
    Boulder, CO 
     (13.6 miles away)
    Languages Spoken:
    English
    Accepting New Patients

    Katherine Mccormack is a Pediatrics specialist and an Allergy and Immunologist in Boulder, Colorado. Dr. Mccormack is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Grass Allergy, Allergic Rhinitis, Sinusitis, and Chronic Spontaneous Urticaria (CSU). Dr. Mccormack is currently accepting new patients.

    Advanced in Primary Immunodeficiency (PID)
    Allergy and Immunology
    Advanced in Primary Immunodeficiency (PID)
    Allergy and Immunology

    Boulder Medical Center

    2750 Broadway St, 
    Boulder, CO 
     (13.6 miles away)
    Languages Spoken:
    English

    Karen Andrews is an Allergy and Immunologist in Boulder, Colorado. Dr. Andrews is rated as an Advanced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Primary Immunodeficiency (PID), Sinusitis, Allergic Rhinitis, and Grass Allergy.

    Experienced in Primary Immunodeficiency (PID)
    Hematology Oncology | Hematology | Oncology
    Experienced in Primary Immunodeficiency (PID)
    Hematology Oncology | Hematology | Oncology
    4715 Arapahoe Ave, 
    Boulder, CO 
     (12.7 miles away)
    Languages Spoken:
    English

    Patrick Moran is a Hematologist Oncology specialist and a Hematologist in Boulder, Colorado. Dr. Moran is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Multiple Myeloma, Paget Disease of the Breast, Pleuropulmonary Blastoma, and Lung Cancer.

    Experienced in Primary Immunodeficiency (PID)
    Family Medicine
    Experienced in Primary Immunodeficiency (PID)
    Family Medicine

    Boulder Internal Medicine PC

    2880 Folsom St, Suite 100, 
    Boulder, CO 
     (12.8 miles away)
    Languages Spoken:
    English
    Accepting New Patients
    Offers Telehealth

    Jennifer Johnson is a primary care provider, practicing in Family Medicine in Boulder, Colorado. Dr. Johnson is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Urinary Tract Infection in Children, Urinary Tract Infection (UTI), Menopause, and Congenital Sucrase-Isomaltase Deficiency. Dr. Johnson is currently accepting new patients.

    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine
    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine

    Office

    2880 Folsom St Ste 100, 
    Boulder, CO 
     (13.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    William Blanchet is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Blanchet is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). His top areas of expertise are Testicular Failure, Male Pseudohermaphroditism with Gynecomastia, Eunuchoidism Familial Hypogonadotropic, and Hypogonadism Primary Partial Alopecia.

    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine
    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine

    Office

    2880 Folsom St Ste 100, 
    Boulder, CO 
     (13.1 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Amy Maiocco is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Maiocco is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Hypervitaminosis D, Hypothyroidism, Postmenopausal Osteoporosis, and Osteoporosis.

    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine
    Experienced in Primary Immunodeficiency (PID)
    Internal Medicine

    Boulder Medical Center

    2750 Broadway St, 
    Boulder, CO 
     (13.6 miles away)
    Languages Spoken:
    English
    Offers Telehealth

    Jennifer Christensen is a primary care provider, practicing in Internal Medicine in Boulder, Colorado. Dr. Christensen is rated as an Experienced provider by MediFind in the treatment of Primary Immunodeficiency (PID). Her top areas of expertise are Hypothyroidism, Postmenopausal Osteoporosis, Osteoporosis, and Obesity in Children.

    Showing 1-20 of 27

    Last Updated: 04/28/2026

    When should I see a Primary Immunodeficiency (PID) doctor near Longmont, CO?

    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 Primary Immunodeficiency (PID) doctor near Longmont, CO?

    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 Primary Immunodeficiency (PID) doctors near Longmont, CO?

    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 Primary Immunodeficiency (PID) doctors near Longmont, CO?

    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 Primary Immunodeficiency (PID) doctor near Longmont, CO?

    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 Primary Immunodeficiency (PID) doctor search results page. 

    Why is it important to get a second opinion from a different Primary Immunodeficiency (PID) 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 Primary Immunodeficiency (PID) doctor near Longmont, CO?

    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 Primary Immunodeficiency (PID) 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 Primary Immunodeficiency (PID) 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 Primary Immunodeficiency (PID) doctors near Longmont, CO?

    Look for the filter feature on the left side of the Primary Immunodeficiency (PID) 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 Primary Immunodeficiency (PID) doctor that offers video calls?

    Look for the filter feature on the left-side of the Primary Immunodeficiency (PID) 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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