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

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

4.8 out of 5 (907 reviews)

Specialties: Internal Medicine, Endocrinology Diabetes and Metabolism

Languages: English, Spanish

Clinical areas of focus

  • Computerized Tomography (CT) Scan
  • 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

  • Abnormal Function Study Results
  • Acromegaly
  • Adrenal Crisis
  • Adrenal Gland Disorder
  • Adrenal Mass
  • Adrenal Tumor
  • Benign Thyroid Nodules
  • Bone Density Disorder
  • Bone Discontinuity
  • Bone Disorders
  • Breast Disorders
  • 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
  • Multiple Myeloma Of The Spine
  • Musculoskeletal System Complications
  • 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
  • Rib And Sternum Fracture
  • 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
  • Ureteral Cancer
  • 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
  • Computerized Tomography (CT) Scan
  • Cosyntropin Stimulation Test
  • Cushing Syndrome Management
  • Dexamethasone Suppression Test
  • Embolization Of Thyroid Metastases To The Spine
  • Enterectomy
  • Enterotomy For Exploration
  • Fallopian Tube Removal
  • Fine-Needle Aspiration Of Thyroid Nodule
  • Ganglion Cyst Excision
  • Gastric Surgery
  • General Anesthesia
  • 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
  • Gynecological Cancer Screening
  • Hormone Imbalance Treatment
  • Hormone Level Regulation
  • Hormone Regulation With Leuprolide
  • Hormone Replacement Therapy
  • Hormone Replacement Therapy In Menopause
  • Insulin Regulation
  • Insulin Resistance Assessment
  • Lobectomy
  • Magnetic Resonance Imaging (MRI)
  • 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
  • Stress Test
  • 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
  • Uterine Cancer
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Practice locations

Distance from Change LocationEnter your Location

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

410-554-4511

Fax 410-554-6490

Get Directions

miles away

Fax 410-554-6490

Insurance

MedStar Health accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Health, please call your insurance company.

  • List of insurance plans we accept
    • TRICARE East Select
    • Kaiser Maryland Medicaid MCO
    • Aetna Classic 5000
    • Private Health Care Systems (PPO)
    • Alterwood Advanatge HMO & DSNP Plans
    • CIGNA SureFit (HMO)
    • Coventry Health Care of Virginia
    • Aetna Premier 200PD
    • CareFirst (NCA) Indemnity
    • IH-HMO
    • Aetna Elect Choice/ Open Access (POS)
    • CareFirst Dual Prime HMO-SNP
    • AmeriHealth Caritas DC Healthy Families
    • United Healthcare Choice Cardiac Global
    • Police and Fire Clinic
    • United Healthcare Select HMO - EPO/NPP
    • Coventry of Delaware HMO/PPO
    • Johns Hopkins Advantage MD PLUS PPO
    • Aetna Advantage 6350PD
    • TRICARE East Prime
    • Priority Partners - Maryland Health Choice
    • Aetna Better Health of VA
    • CIGNA HMO & Network (HMO)
    • CareFirst Blue Choice Opt Out Plus Open Access (POS)
    • OA Plus
    • United Healthcare Choice Plus
    • United HealthCare Community Plan - Maryland Health Choice Program
    • Cigna True Choice Medicare (PPO)
    • UnitedHealthcare Individual Exchange Plans
    • Aetna Medicare Advantage PFFS Plan
    • HealthyBlue PPO
    • Aetna Open Choice (PPO)
    • IH-Open POS Plus
    • CareFirst BlueCross BlueShield Advantage Core/Enhanced
    • United Medicare Private Fee-for-Service (PFFS) plans
    • IH-EPO Plus
    • IH-PPO
    • Medicare FFS
    • United Healthcare Navigate Cardiac Global
    • CareFirst Community Health Plan of MD
    • Amerigroup DC Alliance
    • Anthem BCBS of VA Key Care POS/PPO/Indemnity
    • Anthem BCBS Medi Blue Dual Adv
    • Kaiser Permanente Select
    • HighMark
    • Aetna Managed Choice Open Access (POS)
    • CIGNA Connect EPO
    • Magellan Complete Care of VA - VA Medicaid MCO
    • United Healthcare Choice Plus Cardiac Global
    • Kaiser Permanente Flexible Choice 3-tier POS
    • Cigna Achieve Medicare (HMO C-SNP)
    • United Healthcare Options (PPO)
    • Healthy Blue (HMO, POS)
    • CareFirst Federal Employee Program (Std. & Basic PPO)
    • Kaiser Permanente Medicare Plus
    • IH-Open POS II
    • DC/MD SHOP QHP Small Business Plans
    • Aetna Worker's Compensation Network
    • Aetna Better Health of MD
    • Sentara Health
    • UnitedHealthcare Medicare Adv. Special Needs Plans
    • CareFirst NASCO
    • Cigna True Choice Plus Medicare (PPO)
    • Kaiser Permaenete Signature - Added Choice Cardiac Global
    • Maryland Physicians Care MCO
    • MedStar Family Choice DC Healthcare Alliance
    • CareFirst MedStar PPO
    • UnitedHealthcare Medicare Advantage DSNP District of Columbia
    • Aetna Quality Point of Service (POS)
    • CareFirst Blue Choice Opt Out Open Access
    • Aetna Advantage 5750
    • IH-Indemnity
    • CareFirst Group Medicare Advantage
    • Tricare Reserve Select
    • United Student Resources
    • Aetna Managed Choice (POS)
    • MD IPA (HMO) & MD IPA Preferred Cardiac Global
    • Kaiser Permanente Signature - Added Choice
    • BCBS Out-of-State Medicare Plans (Blue Advantage)
    • IH-Open HMO Option
    • Advantra Platinum (PPO)
    • TRICARE for Life East
    • Anthem BCBS of VA HealthKeepers (POS & POS OA)
    • Jai Medical Systems - Maryland Health Choice
    • Core Essential (HMO)
    • United Healthcare Choice
    • IH-Network Only Plus
    • HumanaChoice Honor's plan PPO
    • United Healthcare Select Plus (POS)
    • TriWest Healthcare Alliance
    • CareFirst Group Medicare Advantage prescription drug benefit (PPO)
    • First Health PPO
    • Coventry Health Care National Network PPO
    • Kaiser Permanente Select Cardiac Global
    • IH-Open Network Only Plus
    • Anthem Federal Employee Program Basic
    • CareFirst Blue Card Program
    • Aetna Advantage 6350
    • Choice Fund PPO
    • Health Services for Children with Special Needs
    • Mamsi Life & Health (Indem./PPO)
    • Kaiser Permanente Medicare Advantage Signature and Select
    • Anthem BCBS of VA HealthKeepers (HMO)
    • Network OA
    • POS OA
    • CIGNA PPO
    • Mamsi Life & Health (Indem./PPO) Cardiac Global
    • Aetna Classic 5000PD
    • Aetna HMO
    • NYC Medicare Advantage Plus
    • Beech Street PPO
    • CIGNA Indemnity
    • Aetna Traditional Choice (PPO)
    • Employee Health Plan
    • M.D. IPA Preferred (POS)
    • UHC Group Medicare Advantage Plans (HMO, POS, PPO)
    • Uniformed Services Family Health Plan
    • Kaiser Permanente Select - Added Choice
    • OCI Direct (HMO)
    • Choice POS II Open Access
    • Humana Medicare Advantage - PPO
    • Cigna TotalCare (HMO D-SNP)
    • Select HMO/HealthFund/Health Network
    • Geisinger Medicare Advantage
    • Anthem BCBS Medi Blue Plus
    • M.D. IPA (HMO)
    • UnitedHealthcare and AARP Medicare Complete Plans
    • BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
    • Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
    • CIGNA EPO
    • Erickson Advantage Plans
    • IH-POS
    • Options PPO Cardiac Global
    • Great-West Healthcare POS/CIGNA
    • Humana Gold Plus HMO
    • Private Fee-for-Service Plans (PFFS)
    • CareFirst Maryland Point of Service Plan
    • CareFirst Administrators
    • Aetna Medicare Advantage HMO & PPO Plans
    • CareFirst EPO
    • Optima Family Care MCO - VA Medicaid MCO
    • IH-POS Plus
    • AMERIVANTAGE/Amerigroup Community Care
    • United Healthcare Community Plan - VA Medicaid MCO
    • Lasso Healthcare - Medicare Medical Savings Account
    • Aetna Basic
    • AmeriHealth Caritas DC Healthcare Alliance
    • HumanaChoice PPO
    • Medicare Direct
    • Aetna Elect Choice/ EPO (Aetna Health Fund)
    • Aetna Signature Administrator PPO/TPA
    • Kaiser Permanente Flexible Choice POS Cardiac Global
    • HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
    • Kaiser Permanente HMO Plus and DHMO Plus Member
    • Kaiser Permanente Signature
    • Veterans Affairs Community Care Network
    • CareFirst BlueChoice HMO
    • Blue Choice Advantage
    • MedStar Family Choice - Maryland Health Choice
    • Navigate
    • United Healthcare Select HMO-EPO/NPP Cardiac Global
    • Aetna VA Exchange
    • Cigna Alliance Medicare (HMO)
    • CareFirst FEP Blue Focus
    • CareFirst MedStar Select PPO
    • IH-Open EPO Plus
    • MultiPlan, Inc
    • Optimum Choice
    • CIGNA PPO Plus
    • UHC Passport
    • Anthem BCBS Medi Blue SNP
    • Aetna Student Health Insurance
    • MedStar Family Choice DC Healthy Families
    • Humana Medicare Advantage - HMO Open Access
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • Johns Hopkins Advantage MD PPO
    • CareFirst Blue Preferred PPO
    • IH-Open HMO
    • CareFirst Maryland Indemnity or PPO
    • WellPoint Maryland - Maryland Health Choice
    • First Health PPO
    • Optimum Choice Preferred (POS)
    • Cigna Preferred Medicare (HMO)
    • Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
    • Anthem Federal Employee Program Standard
    • Johns Hopkins Advantage MD HMO
    • BlueChoice Open Access
    • Amerigroup DC Healthy Families
    • Aetna Classic 3500
    • Choice POS
    • CIGNA POS/Network POS
    • Choice Care Network/HUMANA (PPO)
    • Medicare Advantage - Advantra Value (PPO)
    • Choice POS II
    • Anthem BCBS of VA HealthKeepers Plus
    • CIGNA HMO Open Access

Education

Board Certification: American Board of Internal Medicine, Internal Medicine

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
  • Dec 16, 2025

    She was very helpful in getting my tests set up and assisting in rescheduling another related appointment.

  • Oct 21, 2025

    Good

  • Oct 6, 2025

    She answered my question and assessed my Health issues.