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Dr. John Blackman, MD

Columbus, OH

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Blackman, Endocrinologist in Columbus, OH?

    Dr. John Blackman, MD is an Endocrinologist, who primarily practices in Columbus, OH with 2 additional practice locations. He is board certified by the American Board of Internal Medicine. Dr. Blackman graduated from University of Medicineicine And Dentistry of New Jersey / Robert Wood Johnson Medicine and completed his residency at Univ Of Chicago Hosps, Endocrinology, Diabetes & Metabolism; Cleveland Clinic Fndn, Internal Medicine. Dr. Blackman is fluent in English, and is currently seeing new patients. Dr. Blackman’s practice accepts Medicare, UnitedHealthcare, Aetna, Cigna and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Blackman’s office at (614) 566-9922.

    What are Areas of Expertise for Dr. Blackman?

    Dr. John Blackman, MD is a highly-rated, board-certified 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. Blackman empowers patients to confidently navigate their health journey, specializing in Adrenal Disorders, Diabetes, Thyroid Disorders, or comprehensive wellness support. Serving the Columbus/OH community, Dr. Blackman is dedicated to enhancing lives through expert, patient-centered care.

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

    • Residency: Univ Of Chicago Hosps, Endocrinology, Diabetes & Metabolism; Cleveland Clinic Fndn, Internal Medicine | Cleveland Clin Hosp

    • Medical School: Umdnj-Robt W Johnson Med Sch- New Brunswick Nj | University of Medicine And Dentistry of New Jersey / Robert Wood Johns | University of Medicineicine And Dentistry of New Jersey / Robert Wood Johnson Medicine

    Is Dr. Blackman board certified in Endocrinologist?

    Yes, Dr. John Blackman, MD is board certified by the American Board of Internal Medicine

    What languages does Dr. Blackman speak?

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

    • English

    What conditions does Dr. Blackman treat?

    As a Endocrinologist, Dr. Blackman 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. Blackman. 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:

    • Type 2 Diabetes
    • Type 2 Diabetes with Diabetic Neuropathy
    • Type 2 Diabetes with High Blood Sugar
    • Diabetes Complicationss
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetic Nerve Problems
    • Diabetic Neuropathy
    • Hyperglycemia
    • Diabetes Mellitus Complications
    • Diabetes Related Health Problems
    • Advanced Diabetes
    • Diabetes Mellitus Type 2
    • Adult-Onset Diabetes
    • Non-Insulin Dependent Diabetes
    • Diabetic Nerve Damage
    • Diabetic Polyneuropathy
    • Peripheral Neuropathy from Diabetes
    • Diabetes Mellitus Nerve Problems
    • Diabetic Hyperglycemia
    • High Blood Glucose
    • High Sugar Levels

    ICD-10 Codes:

    • E1169: Type 2 diabetes mellitus with other specified complication
    • E119: Type 2 diabetes mellitus without complications
    • E1142: Type 2 diabetes mellitus with diabetic polyneuropathy
    • E1165: Type 2 diabetes mellitus with hyperglycemia

    Also known as:

    • High Blood Pressure
    • Hypertension
    • Primary Hypertension
    • Essential Hypertension

    ICD-10 Codes:

    • I10: Essential (primary) hypertension

    Also known as:

    • Long-Term Insulin Use
    • Diabetes Medicines
    • Chronic insulin therapy
    • Ongoing insulin treatment
    • Insulin for diabetes

    ICD-10 Codes:

    • Z794: Long term (current) use of insulin

    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:

    • Post-Surgery Hypothyroidism
    • Hypothyroidism
    • Congenital hypothyroidism
    • Hypothyroidism (Underactive Thyroid)
    • Postoperative Underactive Thyroid
    • Thyroid Failure After Surgery
    • Underactive Thyroid
    • Low Thyroid Function

    ICD-10 Codes:

    • E890: Postprocedural hypothyroidism
    • E039: Hypothyroidism, unspecified

    Also known as:

    • Type 1 Diabetes
    • Type 1 Diabetes with Nerve Damage
    • Diabetes Type 1
    • Type 1 diabetes
    • Diabetes Tests & Diagnosis
    • Diabetic Nerve Problems
    • Diabetic Neuropathy
    • Diabetes Complicationss
    • Juvenile Diabetes
    • Insulin-Dependent Diabetes
    • T1D
    • Type 1 Diabetes Mellitus
    • Diabetic Polyneuropathy
    • Type 1 Diabetes Mellitus Complications
    • Diabetes Related Health Problems

    ICD-10 Codes:

    • E109: Type 1 diabetes mellitus without complications
    • E1042: Type 1 diabetes mellitus with diabetic polyneuropathy
    • E1069: Type 1 diabetes mellitus with other specified complication

    Also known as:

    • Vitamin D Deficiency
    • Low Vitamin D Levels
    • Lack of Vitamin D
    • Hypovitaminosis D

    ICD-10 Codes:

    • E559: Vitamin D deficiency, unspecified

    Also known as:

    • Nontoxic Multinodular Goiter
    • Thyroid Disease
    • Multinodular Goiter
    • Lumpy Enlarged Thyroid

    ICD-10 Codes:

    • E042: Nontoxic multinodular goiter

    Also known as:

    • Thyroid Cancer
    • Thyroid Carcinoma
    • Malignant Thyroid Nodule
    • Thyroid Gland Cancer

    ICD-10 Codes:

    • C73: Malignant neoplasm of thyroid gland

    Also known as:

    • Age-Related Osteoporosis
    • Fractures
    • Osteoporosis
    • Senile Osteoporosis
    • Primary Osteoporosis
    • Bone Thinning from Aging

    ICD-10 Codes:

    • M810: Age-related osteoporosis without current pathological fracture

    Also known as:

    • Fatty Liver Disease
    • Liver Disease
    • Nonalcoholic Fatty Liver Disease (NAFLD) & NASH
    • Nonalcoholic Fatty Liver Disease & NASH in Children
    • NAFLD
    • NASH
    • Hepatic steatosis

    ICD-10 Codes:

    • K760: Fatty (change of) liver, not elsewhere classified

    Also known as:

    • High Cholesterol
    • Cholesterol
    • Triglycerides
    • Hyperlipidemia
    • High lipids
    • Dyslipidemia

    ICD-10 Codes:

    • E785: Hyperlipidemia, unspecified

    Also known as:

    • Single Nontoxic Thyroid Nodule
    • Thyroid Disease
    • Benign Thyroid Nodule
    • Solitary Thyroid Nodule

    ICD-10 Codes:

    • E041: Nontoxic single thyroid nodule

    Also known as:

    • Hardening of the Arteries in the Heart without Chest Pain
    • Atherosclerosis
    • Coronary Artery Disease
    • Silent Coronary Artery Disease
    • Asymptomatic Atherosclerosis

    ICD-10 Codes:

    • I2510: Atherosclerotic heart disease of native coronary artery without angina pectoris

    Does Dr. Blackman accept my insurance?

    Dr. Blackman accepts most major insurance plans. Important: Please call our office at (614) 566-9922 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Blackman accept in Columbus, OH?

    Dr. Blackman in Columbus, OH accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Aetna

    • All Other Third Party

    • American Postal Workers Union APWU

    • Blue Cross Blue Shield

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • Medicare

    • Molina

    • Ohio Health Choice Plan

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Blackman's office located?

    Dr. John Blackman's Primary Practice

    5150 E Dublin Granville Rd

    Columbus, OH 43081

    (614) 566-9922

    Get Directions

    Dr. John Blackman's Practice 2

    111 S Grant Ave # 3

    Columbus, OH 43215

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    Dr. John Blackman's Practice 3

    500 E Main St Ste 100

    Columbus, OH 43215

    (614) 566-9922

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

    Dr. Blackman's National Provider Identifier (NPI) number is 1174694749.

    What common questions do patients ask about Dr. Blackman?

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

    What is Dr. John Blackman's specialty?

    Dr. Blackman is a Endocrinologist near Columbus, OH. An internist specializing in disorders of the endocrine glands, including the thyroid and adrenal glands. This specialist also manages a range of conditions such as diabetes, metabolic and nutritional disorders, obesity, pituitary disorders, and menstrual and sexual health issues. Contact Dr. Blackman to book an appointment today.

    Is this Dr. John Blackman affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Blackman is affiliated with OhioHealth Grant Medical Center 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 Endocrinologist?

    Explore 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 John Blackman accepting new patients in Columbus, OH?

    Yes, Dr. John Blackman is accepting new patients at this time.

    Does Dr. John Blackman offer online booking?

    Please contact Dr. Blackman's office at (614) 566-9922 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Blackman?

    Please contact Dr. Blackman's office at (614) 566-9922 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Blackman have?

    Dr. John Blackman is certified by the American Board of Internal Medicine.

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