Isabel Marcano Bonilla, MD| Endocrinology Diabetes and Metabolism, Internal Medicine | MedStar Health
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Isabel Marcano Bonilla

Isabel Marcano Bonilla, MD
Provider is directly employed by MedStar Health

4.8 out of 5 (1034 reviews)

Specialties: Endocrinology Diabetes and Metabolism, Internal Medicine

Languages: Spanish, English

Clinical areas of focus

  • Glycemic Variability Assessment
  • Graves Disease
  • Hashimoto Thyroiditis
  • Hormone Replacement Therapy
  • Hyperparathyroidism
  • Osteoporosis
  • Pioglitazone Therapy
  • Pituitary Disorders
  • Polycystic Ovary Syndrome
  • Subclinical Hypothyroidism
  • Type 2 Diabetes Mellitus
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Conditions and procedures

Conditions I treat

  • Acromegaly
  • Adrenal Crisis
  • Adrenal Gland Disorder
  • Adrenal Mass
  • Adrenal Tumor
  • Benign Thyroid Nodules
  • Bone Density Disorder
  • Bone Discontinuity
  • Cardiometabolic Disorders
  • Complications Of The Puerperium
  • Congenital Adrenal Hyperplasia
  • Cushing Syndrome
  • Diabetes In Pregnancy
  • Diabetes Insipidus
  • Diabetes Mellitus Due To Underlying Condition
  • Diabetes Mellitus Type 2
  • Diabetic Ketoacidosis
  • Disorders Of Lipoprotein Metabolism And Lipidemias
  • Disorders Of Mineral Metabolism
  • Disorders Of Pancreatic Internal Secretion
  • Disorders Of Pituitary Gland
  • Disorders Of Renal Tubular Function
  • Disorders Of Thyroid
  • Drug Or Chemical Induced Diabetes Mellitus
  • Endocrine Disorders
  • Endocrine Pancreas Disorders
  • Family History Of Malignant Neoplasm
  • Gallbladder Disease
  • Gastrinoma
  • Gestational Diabetes
  • Grave's Disease
  • Hashimoto Thyroiditis
  • High Cholesterol
  • Hyperaldosteronism
  • Hyperfunction Of Pituitary Gland
  • Hyperglycemia
  • Hyperparathyroidism
  • Hyperprolactinemia
  • Hypertrichosis
  • Hypocalcemia
  • Hypoglycemia
  • Hypoparathyroidism
  • Insulin Resistance
  • Lipid Disorders
  • Long Term Drug Therapy
  • Malignant Neoplasm Of Endocrine Glands
  • Menstrual Disorders
  • Multiple Endocrine Neoplasia
  • Neonatal Hypothyroidism
  • Neoplasms Of Lymphoid, Hematopoietic And Related Tissue
  • Nonscarring Hair Loss
  • Nontoxic Goiter
  • Obesity
  • Orbit Disorders
  • Osteochondropathies
  • Osteoporosis
  • Ovarian Cysts
  • Ovarian Dysfunction
  • Panhypopituitarism
  • Parathyroid Cancer
  • Pituitary Adenoma
  • Pituitary Apoplexy
  • Pituitary Cancer
  • Pituitary Disorders
  • Polycystic Ovary Syndrome
  • Polyglandular Dysfunction
  • Postprocedural Complications
  • Prediabetes
  • Presence Of Functional Implants
  • Primary Hyperparathyroidism
  • Proteinuria
  • Subclinical Hypothyroidism
  • Testicular Dysfunction
  • Thyroid Cancer
  • Thyroid Goiter
  • Thyroid Nodules
  • Thyroid Storm
  • Thyrotoxic Crisis
  • Transitional Cell Carcinoma
  • Transitory Neonatal Electrolyte And Metabolic Disturbances
  • Type 2 Diabetes In Children
  • Type 2 Diabetes Mellitus
  • Vitamin Deficiency
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Procedures I perform

  • Adrenal Cancer Treatment
  • Adrenal Crisis Treatment
  • Adrenal Disorder Treatment
  • Adrenal Disorder Treatment With Ketoconazole
  • Adrenal Gland Disease Prevention
  • Adrenal Hormone Regulation
  • Adrenal Insufficiency Treatment
  • Adrenal Tumor Surgery With Ifs
  • Adrenal Tumor Treatment
  • Adrenal Venous Sampling
  • Adrenal Venous Sampling With Cosystropin Stimulation
  • Ammonia Level Test
  • Celiac Plexus Block
  • Cervical Lymph Node Dissection
  • Cosyntropin Stimulation Test
  • Cushing Syndrome Management
  • Dexamethasone Suppression Test
  • Embolization Of Thyroid Metastases To The Spine
  • Enterectomy
  • Enterotomy For Exploration
  • Fine-Needle Aspiration Of Thyroid Nodule
  • Glucose Control Management
  • Glycated Hemoglobin Test
  • Glycemic Variability Assessment
  • Growth Hormone Follow-Up
  • Growth Hormone Level Monitoring
  • Growth Hormone Management
  • Growth Hormone Management With Octreotide
  • Growth Hormone Screening
  • Growth Hormone Stimulation Test
  • Growth Hormone Suppression Test
  • Growth Hormone Suppression Test With Glucose
  • Hormone Imbalance Treatment
  • Hormone Level Regulation
  • Hormone Regulation With Leuprolide
  • Hormone Replacement Therapy
  • Hormone Replacement Therapy In Menopause
  • Insulin Regulation
  • Insulin Resistance Assessment
  • Nutrient Deficiency Screening
  • Parathyroid Cancer Management
  • Parathyroid Cancer Treatment
  • Parathyroid Disease Prevention
  • Parathyroid Disorder Treatment
  • Parathyroid Surgery With Minimally Invasive Technique
  • Parathyroid Tumor Surgery
  • Pioglitazone Therapy
  • Pituitary Cancer Treatment
  • Pituitary Disease Prevention
  • Pituitary Disorder Treatment
  • Pituitary Tumor Embolization
  • Pituitary Tumor Follow-Up
  • Pituitary Tumor Management
  • Pituitary Tumor Surgery
  • Pituitary Tumor Treatment
  • Pituitary Tumor Treatment With Thyroid Hormone Replacement
  • Popliteal Artery Entrapment Syndrome Treatment
  • Posterior Fossa Craniotomy
  • Selective Venous Sampling For Parathyroid Hormone
  • Testicular Ultrasound
  • Thyroid Biopsy
  • Thyroid Biopsy With Ultrasound Guidance
  • Thyroid Cancer Management
  • Thyroid Cancer Treatment
  • Thyroid Disease Management
  • Thyroid Disease Prevention
  • Thyroid Disease Treatment
  • Thyroid Fine-Needle Aspiration Biopsy
  • Thyroid Function Test With Tsh
  • Thyroid Nodule Management
  • Thyroid Nodule Treatment
  • Thyroid Remnant Ablation
  • Thyroid Scan With Uptake
  • Thyroid Ultrasound With Doppler
  • Thyroidectomy
  • Thyroid-Stimulating Hormone Follow-Up
  • Thyroid-Stimulating Hormone Suppression
  • Urea Reduction Ratio Test
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Practice locations

Distance from Change Location Enter your Location

200 E 33rd St
Ste 551
Baltimore, MD, 21218

410-554-4511
Get Directions

miles away

Fax 410-554-6490

Insurance

This list represents the major payors accepted by MedStar Health.

NOTE: Payor contracts change and not all plans associated with a payor may be covered. Payors may offer multiple plans. If you have a question related to your insurance, please contact your insurance plan directly. Contact information is located on your health insurance ID card.

*Denotes limited participation. Specific providers and practices may NOT be participating. Please contact your insurance plan directly.

  • List of insurance plans we accept
    • Aetna
    • CareFirst BlueCross BlueShield of Maryland
    • Cigna Health Care
    • Kaiser Permanente*
    • MedStar Select (Administered by CareFirst)
    • United HealthCare
    • Aetna
    • CareFirst BlueCross BlueShield of Maryland
    • Healthspring
    • Humana
    • Medicare & Railroad Medicare
    • United HealthCare
    • Aetna Better Health of Maryland *
    • Medical Assistance/Medicaid
    • MedStar Family Choice MD
    • Priority Partners *
    • United HealthCare Community Health Plan MD
    • Wellpoint MD
    • AmeriHealth Caritas
    • Health Services For Children With Special Needs (HSCSN)
    • Medical Assistance/Medicaid
    • MedStar Family Choice DC
    • Johns Hopkins Employer Health Programs *
    • Johns Hopkins US Family Health Plan *
    • MultiPlan
    • Private Healthcare Systems
    • Tricare/Humana Military
    • VA Community Care Network (VACCN)

Education

Board Certification: American Board of Internal Medicine, Endocrinology, Diabetes and Metabolism

Fellowship: University of Maryland Medical Center (2020)

Residency: Temple University Hospital (2018)

Medical School: University of Puerto Rico School of Medicine (2015)

Ratings and reviews

  • Explanations the care provider gave you about your problem or condition

    4.8
  • Extent to which the care provider listened to you

    4.8
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    4.8
  • Provider included you in decisions

    4.8
  • Concern the care provider showed for your questions or worries

    4.8
  • Likelihood of recommending this care provider to others

    4.8
  • Aug 18, 2026

    Dr Marcano Bonilla was thorough and listened to my concerns asked questions. She was considerate and made suggestions for my care path that would work best for me

  • Aug 14, 2026

    My visit my provider was both informative and helpful

  • Aug 9, 2026

    Very good doctor