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Dr. Dennis O'Brien Jr, MD

Pediatric Hematology & Oncology*
5.0 (3)
Map Pin Small Fort Wayne, IN
Accepting new patients
23 years of experience

Offers telehealth

Overview of Dr. Dennis O'Brien Jr, MD

Dr. Dennis O'Brien Jr, MD is a Pediatric Hematology-Oncology Specialist in Fort Wayne, IN. They specialize in Pediatric Hematology & Oncology, has 23 years of experience, and is board certified in Pediatrics. They graduated from UNIVERSITY OF CINCINNATI / MAIN CAMPUS and is affiliated with Indiana University Health North Hospital, IU Health Methodist Hospital, Lutheran Health Network - The Orthopedic Hospital, Lutheran Hospital Of Indiana, Parkview Huntington Hospital, Parkview Lagrange Hospital, Parkview Regional Medical Center, Parkview Wabash Hospital and Parkview Whitley Hospital. Patients rated Dr. O'Brien Jr an average 5.0 star rating.

Dr. O'Brien Jr works at Practice in Fort Wayne, IN with other offices in Indianapolis, IN and Carmel, IN. They are accepting new patients and accept Aetna, Anthem and Anthem Blue Cross Blue Shield as well as other major insurance plans. Please call ahead to schedule an appointment and to confirm all accepted insurance plans.

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These providers are on the medical staff of Cleveland Clinic
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These providers are on the medical staff of Cleveland Clinic.

Dr. O'Brien Jr's Office Locations

  1. 1
    Office
    7950 W Jefferson Blvd Ste 217, Fort Wayne, IN 46804 Icon Directions Right Arrow Directions Phone Icon (260) 435-2501
  2. 2
    Riley Hospital for Children At Indiana University Health
    705 Riley Hospital Dr, Indianapolis, IN 46202 Icon Directions Right Arrow Directions Phone Icon (317) 944-5000
  3. 3
    Brooklyn Medical Associates LLC
    3534 Brooklyn Ave, Fort Wayne, IN 46809 Icon Directions Right Arrow Directions Phone Icon (260) 435-7427
  4. 4
    Indiana University Health North Hospital
    11700 N Meridian St, Carmel, IN 46032 Icon Directions Right Arrow Directions Phone Icon (317) 688-2000

Hospital Affiliations
Admitting Hospitals

Admitting hospitals are where the provider is credentialed to see patients, perform procedures, and send patients for continuous care.

  • Indiana University Health North Hospital
  • IU Health Methodist Hospital
  • Lutheran Health Network - The Orthopedic Hospital
  • Lutheran Hospital Of Indiana
  • Parkview Huntington Hospital
  • Parkview Lagrange Hospital
  • Parkview Regional Medical Center
  • Parkview Wabash Hospital
  • Parkview Whitley Hospital

Experience & Treatment Frequency

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Our treatment frequency feature helps you understand howoften a provider performs or treats a specificprocedure/condition compared to other doctors. Providersrank in one of four frequency categories:

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May Perform

Specific procedures/conditions that don’t haveenough data are indicated with “May Perform”. We encourageyou to contact the provider with questions about theirexperience.

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Acute Lymphoid Leukemia

Treatment frequency



Many providers have expertise treating multiple conditions or procedures. FindCare uses a variety of data sources to determine which conditions or procedures a provider treats and their level of experience.
Thalassemia
Acute Leukemia
Acute Lymphoid Leukemia
Anemia
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Acute Myeloid Leukemia
Adrenal Gland Cancer
Bleeding Disorders
Bone Cancer
Brain and Nervous System Cancer (incl. Gliomas, Astrocytoma, Schwannoma, Medulloblastoma, Chordoma)
Brain Cancer
Chronic Myeloid Leukemia (CML)
Coagulation Disorders
Deep Vein Thrombosis (DVT)
Endocrine Gland Cancer
Ewing's Sarcoma
Eye Cancer
Hemochromatosis
Hemoglobin E-Beta Thalassemia
Hemophilia
Hodgkin's Disease
Hypogammaglobulinemia
Immune Thrombocytopenia
Immune Thrombocytopenic Purpura (ITP)
Kidney Cancer
Langerhans Cell Histiocytosis
Leukocytosis
Lung Cancer
Myeloproliferative Disorders
Neuroendocrine Tumors
Neutropenia
Nodular Sclerosis Hodgkins Lymphoma
Non-Hodgkin's Lymphoma
Osteosarcoma
Ovarian Cancer
Primary Hypercoagulable State
Purpura
  • View other providers who treat Purpura
Qualitative Platelet Defects (incl. Glanzmann's Thrombasthenia)
Retinoblastoma
Retroperitoneum Cancer
Sickle Cell Disease
Sickle Cell Hemoglobin SS Disease
Soft Tissue Sarcoma
Thalassemia Minor
Thrombocytosis
Venous Embolism and Thrombosis
Vitamin B Deficiency
Vitamin B12 Anemia
Vitamin B12 Deficiency
Vitamin K Deficiency
von Willebrand Disease
Anemia and Iron Deficiency Screening
Bone Marrow Biopsy
Erythropoietin Test
Leukemia Diagnostic Evaluations
Lymphoma Evaluation
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    • Aetna
    • Anthem
    • Anthem Blue Cross Blue Shield
    • Blue Cross Blue Shield
    • Cigna
    • First Health
    • Humana
    • SIHO Insurance Services
    • UnitedHealthCare

    * Please verify this information when scheduling an appointment.

    Ratings & Reviews
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    5.0
    Average provider rating
    Based on 3 ratings
    Patient Ratings (3)
    5 Star
    (3)
    4 Star
    (0)
    3 Star
    (0)
    2 Star
    (0)
    1 Star
    (0)
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    Dr. O'Brien Jr's Office & Staff

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    About Dr. Dennis O'Brien Jr, MD

    Specialties*
    • Pediatric Hematology & Oncology

    • *Healthline does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.
    Specialties*
    Years of Experience
    • 23 years of experience
    Years of Experience
    Years of experience represents how long a provider has been practicing in their field since graduating from medical school. Not all providers will have this information available.

    Languages Spoken
    • English
    Languages Spoken
    NPI Number
    • 1568673903
    NPI Number
    A National Provider Identifier (NPI) is a unique 10-digit identifier issued by the government to healthcare providers.

    Education & Certifications

    Medical Education
    • UNIVERSITY OF CINCINNATI / MAIN CAMPUS
    Medical Education
    Board Certifications
    • Pediatrics and Pediatric Hematology-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.

    Frequently Asked Questions

    Dr. Dennis O'Brien Jr, MD is accepting new patients on Healthline FindCare. You can check to see if Dr. O'Brien Jr is offering online scheduling or call the provider’s office for more information.

    Dr. O'Brien Jr has indicated that they do offer telehealth services. Please call the provider’s office at for more information.

    3 patients have reviewed Dr. O'Brien Jr. The overall rating for this provider is 5.0. You can read verified reviews and ratings and leave your own review based on your experience with Dr. O'Brien Jr.

    Whether a person prefers to schedule an appointment online or over the phone with Dr. O'Brien Jr, there are benefits to both methods. A person calling to schedule an with Dr. O'Brien Jr appointment can ask questions about the practice, provider availability, conditions treated, procedures performed, and if their insurance carrier is accepted. While online scheduling is quicker, easier, allows one to view a wide range of appointment times, and may provide the ability to sync with a personal calendar.

    Telehealth Options
    This provider has not specified a telehealth appointment method. Would you still like to make an appointment with Dr. O'Brien Jr, 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
    (260) 435-2501

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