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Dr. Ian Marshall, MD

New Brunswick, NJ

28 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Marshall, Pediatric Endocrinologist in New Brunswick, NJ?

    Dr. Ian Marshall, MD is a Pediatric Endocrinologist, who primarily practices in New Brunswick, NJ with 2 additional practice locations. He has been practicing for over 28 years and is board certified. Dr. Marshall completed his residency at Ny And Presby Hosp, Pediatric Endocrinology; Long Island Jewish Med Ctr, Pediatrics. Dr. Marshall is fluent in English and Afrikaans, and is currently seeing new patients. Dr. Marshall’s practice accepts Cigna, Medicare, UnitedHealthcare, Aetna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Marshall’s office.

    What are Areas of Expertise for Dr. Marshall?

    Dr. Ian Marshall, MD is a highly-rated, board-certified Pediatric Endocrinologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Marshall empowers patients to confidently navigate their health journey, specializing in Adrenal Disorders, Calcium Disorders, Diabetes, Growth Disorders, Pubertal Disorders, Thyroid Disorders, or comprehensive wellness support. Serving the New Brunswick/NJ community, Dr. Marshall is dedicated to enhancing lives through expert, patient-centered care.

    Where did Dr. Marshall go to medical school and complete their residency?

    • Residency: Ny And Presby Hosp, Pediatric Endocrinology; Long Island Jewish Med Ctr, Pediatrics | Long Island Jewish Medical Center | Kingsbrook Jewish Medical Center Program

    • Medical School: University Of Cape Town- Fac Of Med- Cape Town- So Africa | University of Cape Town / Faculty of Health Sciences

    Is Dr. Marshall board certified as a Pediatric Endocrinologist?

    Yes, Dr. Ian Marshall, MD is board certified by the American Board of Pediatrics

    What languages does Dr. Marshall speak?

    Dr. Marshall and their clinical team can communicate with patients in the following languages:

    • Afrikaans

    • English

    What conditions does Dr. Marshall treat?

    As a Pediatric Endocrinologist, Dr. Marshall diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Marshall. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.

    Also known as:

    • Short Stature in Children
    • Growth Disorder
    • Child Growth Problems
    • Dwarfism
    • Growth Retardation

    ICD-10 Codes:

    • R6252: Short stature (child)

    Also known as:

    • Type 1 Diabetes
    • Type 1 Diabetes with High Blood Sugar
    • Diabetes Type 1
    • Type 1 diabetes
    • Diabetes Tests & Diagnosis
    • Hyperglycemia
    • Juvenile Diabetes
    • Insulin-Dependent Diabetes
    • T1D
    • Diabetic Hyperglycemia
    • High Glucose in Type 1 Diabetes
    • High Blood Sugar Episode

    ICD-10 Codes:

    • E109: Type 1 diabetes mellitus without complications
    • E1065: Type 1 diabetes mellitus with hyperglycemia

    Also known as:

    • Transgender Identity
    • Gender Dysphoria
    • Transsexual Identity
    • Gender Transition

    ICD-10 Codes:

    • F640: Transsexualism

    Also known as:

    • Hashimoto's Disease
    • Thyroid Disease
    • Hashimoto's disease
    • Autoimmune thyroiditis', 'Chronic lymphocytic thyroiditis', 'Hashimoto's thyroiditis

    ICD-10 Codes:

    • E063: Autoimmune thyroiditis

    Also known as:

    • Gender Dysphoria
    • Childhood Gender Dysphoria
    • Gender incongruence
    • Gender identity issues
    • Gender incongruence in children
    • Gender identity issues in kids

    ICD-10 Codes:

    • F649: Gender identity disorder, unspecified
    • F642: Gender identity disorder of childhood

    Also known as:

    • Congenital Hypothyroidism
    • Hypothyroidism
    • Congenital hypothyroidism
    • Hypothyroidism (Underactive Thyroid)
    • Underactive Thyroid at Birth
    • Neonatal Hypothyroidism
    • Underactive Thyroid
    • Low Thyroid Function

    ICD-10 Codes:

    • E031: Congenital hypothyroidism without goiter
    • E039: Hypothyroidism, unspecified

    Also known as:

    • Underactive Pituitary Gland
    • Pituitary Disorder
    • Combined pituitary hormone deficiency
    • Isolated growth hormone deficiency
    • Hypopituitarism
    • Pituitary Hormone Deficiency
    • Low Pituitary Function

    ICD-10 Codes:

    • E230: Hypopituitarism

    Also known as:

    • Adrenogenital Disorder
    • Congenital Adrenal Hyperplasia (CAH)
    • Adrenal Gland Disorder
    • Birth Defects
    • 21-hydroxylase deficiency
    • 3-beta-hydroxysteroid dehydrogenase deficiency
    • Congenital adrenal hyperplasia due to 11-beta-hydroxylase deficiency
    • Adrenal Gland Sex Hormone Problem
    • Adrenal Androgen Disorder
    • Adrenal Hormone Imbalance
    • CAH
    • Adrenogenital Syndrome
    • Enzyme Deficiency Adrenal Disorder

    ICD-10 Codes:

    • E259: Adrenogenital disorder, unspecified
    • E250: Congenital adrenogenital disorders associated with enzyme deficiency

    Also known as:

    • Obesity
    • Take Charge of Your Health: A Guide for Teenagers
    • Excess Weight
    • Being Overweight
    • High BMI

    ICD-10 Codes:

    • E669: Obesity, unspecified

    Also known as:

    • Abnormal Thyroid Function Test Results
    • Thyroid Disease
    • Unusual thyroid test results
    • Irregular thyroid function
    • Thyroid hormone levels

    ICD-10 Codes:

    • R946: Abnormal results of thyroid function studies

    Also known as:

    • Prader-Willi Syndrome
    • PWS
    • Genetic obesity syndrome
    • Developmental delay syndrome

    ICD-10 Codes:

    • Q8711: Prader-Willi syndrome

    Also known as:

    • Early Puberty
    • Puberty
    • Central precocious puberty
    • Precocious puberty
    • Puberty at a young age

    ICD-10 Codes:

    • E301: Precocious puberty

    Also known as:

    • Other Birth Defects Causing Short Stature
    • Birth Defects
    • Rare Short Stature Syndromes
    • Uncommon Dwarfism

    ICD-10 Codes:

    • Q8719: Other congenital malformation syndromes predominantly associated with short stature

    Also known as:

    • Familial Hypophosphatemia
    • Metabolic Disorder
    • Hereditary hypophosphatemic rickets
    • Hereditary Hypophosphatemic Rickets
    • Low Phosphate Disorder

    ICD-10 Codes:

    • E8331: Familial hypophosphatemia

    Also known as:

    • Type 2 Diabetes
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes

    ICD-10 Codes:

    • E119: Type 2 diabetes mellitus without complications

    Also known as:

    • Graves' Disease
    • Hyperthyroidism
    • Graves' disease
    • Graves Disease
    • Hyperthyroidism with Goiter
    • Toxic Diffuse Goiter
    • Overactive Thyroid with Enlarged Gland

    ICD-10 Codes:

    • E0500: Thyrotoxicosis with diffuse goiter without thyrotoxic crisis or storm

    Does Dr. Marshall accept my insurance?

    Dr. Marshall accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Marshall accept in New Brunswick, NJ?

    Dr. Marshall in New Brunswick, NJ accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Centene

    • Chevron

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Express Scripts

    • Gorman-Rupp Co

    • Horizon BlueCross BlueShield

    • Independence Blue Cross

    • State of New Jersey

    • UnitedHealthcare

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    Where is Dr. Marshall's office located?

    Dr. Ian Marshall's Primary Practice

    89 French St Ste 2300

    New Brunswick, NJ 08901

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    Dr. Ian Marshall's Practice 2

    1 Worlds Fair Dr Fl 1

    Somerset, NJ 08873

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    Dr. Ian Marshall's Practice 3

    125 Paterson St

    New Brunswick, NJ 08901

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    What is Dr. Marshall's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Marshall's National Provider Identifier (NPI) number is 1396760450.

    What common questions do patients ask about Dr. Marshall?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Marshall

    What is Dr. Ian Marshall's specialty?

    Dr. Marshall is a Pediatric Endocrinologist near New Brunswick, NJ. A pediatrician specializing in the care of infants, children, and adolescents with diseases caused by abnormalities in the endocrine glands, which produce hormones. This includes conditions such as diabetes mellitus, growth failure, atypical body size for age, early or delayed puberty, congenital abnormalities, and disorders affecting the thyroid, adrenal, and pituitary glands, as well as the genital region. Contact Dr. Marshall to book an appointment today.

    Is this Dr. Ian Marshall affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Marshall is affiliated with Robert Wood Johnson University Hospital - New Brunswick which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    Where can I learn more about Pediatric Endocrinologist?

    Explore Pediatric Endocrinologist with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is Ian Marshall accepting new patients in New Brunswick, NJ?

    Yes, Dr. Ian Marshall is accepting new patients at this time.

    Does Dr. Ian Marshall offer online booking?

    Please contact Dr. Marshall's office for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Ian Marshall?

    Please contact Dr. Marshall's office for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. Ian Marshall have?

    Dr. Ian Marshall is certified by the American Board of Pediatrics.

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