Marnie Gissel Aguasvivas Bello, MD| Endocrinology Diabetes and Metabolism, Internal Medicine | MedStar Health
Clinical areas of focus
- Diabetes Mellitus Type 2
- Hyperthyroidism
- Osteoporosis
- Parathyroid Disorders
- Pituitary Disorders
- Subclinical Hypothyroidism
- Thyroid Cancer
- Thyroid Nodules
Conditions and procedures
Conditions I treat
- Acromegaly
- Adrenal Crisis
- Adrenal Gland Disorder
- Adrenal Gland Disorders (E.G. CUSHING'S SYNDROME, PHEOCHROMOCYTOMA)
- Adrenal Mass
- Adrenal Tumor
- Adrenogenital Disorders
- Adult Osteomalacia
- Benign Neoplasm Of Adrenal Gland
- Benign Thyroid Nodules
- Bone Density Disorder
- Bone Disorders
- Breast Disorders
- Cardiometabolic Disorders
- Congenital Adrenal Hyperplasia
- Cushing Syndrome
- Diabetes In Pregnancy
- Diabetes Insipidus
- Diabetes Mellitus Due To Underlying Condition
- Diabetes Mellitus Type 2
- Diabetic Ketoacidosis
- Diabetic Nephropathy
- Diabetic Neuropathy
- Diabetic Retinopathy
- Disorders Of Lipoprotein Metabolism And Lipidemias
- Disorders Of Mineral Metabolism
- Disorders Of Pituitary Gland
- Disorders Of Thyroid
- Drug Or Chemical Induced Diabetes Mellitus
- Endocrine Disorders
- Endocrine Hypertension
- Family History Of Malignant Neoplasm
- Gastrinoma
- Gestational Diabetes
- Grave's Disease
- Grave's Disease
- Growth Hormone Deficiency
- Hashimoto Thyroiditis
- High Blood Sugar
- High Cholesterol
- Hirsutism
- Hyperaldosteronism
- Hyperalimentation
- Hyperfunction Of Pituitary Gland
- Hyperglycemia
- Hyperparathyroidism
- Hyperprolactinemia
- Hyperthyroidism
- Hypertrichosis
- Hypocalcemia
- Hypoglycemia
- Hypoparathyroidism
- Insulin Resistance
- Klinefelter Syndrome
- Lipid Disorders
- Long Term Drug Therapy
- Low Testosterone Levels
- Male Hypogonadism
- Malignant Neoplasm Of Endocrine Glands
- Malignant Neoplasm Of Lymph Nodes
- Malignant Neuroendocrine Tumors
- Malnutrition
- Metabolic Syndrome
- Multiple Endocrine Neoplasia
- Multiple Myeloma Of The Spine
- Musculoskeletal System Complications
- Nontoxic Goiter
- Obesity
- Osteochondropathies
- Osteopenia
- Osteoporosis
- Ovarian Cysts
- Ovarian Dysfunction
- Parathyroid Adenoma
- Parathyroid Cancer
- Parathyroid Disorders
- Personal History Of Medical Treatment
- Pituitary Adenoma
- Pituitary Apoplexy
- Pituitary Cancer
- Pituitary Disorders
- Plasma Cell Neoplasms
- Poisoning
- Polycystic Ovary Syndrome
- Polyglandular Dysfunction
- Postmenopausal Osteoporosis
- Postprocedural Complications
- Prediabetes
- Presence Of Functional Implants
- Primary Hyperparathyroidism
- Proteinuria
- Rib And Sternum Fracture
- Sex Chromosome Abnormalities, Male Phenotype
- Subclinical Hypothyroidism
- Testicular Dysfunction
- Thyroid Cancer
- Thyroid Goiter
- Thyroid Nodules
- Thyroid Storm
- Thyrotoxic Crisis
- Toxic Goiter
- Turner Syndrome
- Type 2 Diabetes
- Type 2 Diabetes In Children
- Type 2 Diabetes Mellitus
- Ureteral Cancer
- Vitamin D Deficiency Rickets
- Vitamin Deficiency
- Weight Loss
- West Syndrome
Procedures I perform
- Acromegaly Treatment
- Adrenal Cancer Treatment
- Adrenal Crisis Treatment
- Adrenal Disease Treatment
- Adrenal Disorder Treatment
- Adrenal Gland Cancer Management
- Adrenal Hormone Management
- Adrenal Hormone Regulation
- Adrenal Insufficiency Treatment
- Adrenal Surgery
- Adrenal Tumor Treatment
- Alcohol Abuse Counseling
- Aldosteronoma Management
- Allergy Emergency Preparedness
- Alternative Medicine
- Anemia Management
- Automated Insulin Delivery
- Bariatric Nutrition Counseling
- Bariatric Surgery Counseling
- Bariatric Surgery Nutrition Counseling
- Bariatric Surgery Reversal
- Binge Eating Disorder Treatment
- Biometric Screenings
- Blood Glucose Correction For High Readings
- Blood Pressure Check
- Blood Pressure Monitoring
- Body Mass Index (BMI) Evaluation
- Cancer Genetic Testing
- Carbohydrate Counting For Meal Planning
- Cardiovascular Disease Prevention
- Cardiovascular Health Nutrition Counseling
- Cardiovascular Personalized Medicine
- Cervical Lymph Node Dissection
- Chronic Fatigue Syndrome Nutrition Counseling
- Clinical Trials
- Community Health Education
- Computerized Tomography (CT) Scan
- Continuous Glucose Monitoring System
- Continuous Glucose Monitoring System Training
- Coronary Artery Disease Nutrition Counseling
- Cushing Syndrome Management
- Cushing Syndrome Treatment
- Cushing's Syndrome Treatment
- Cystic Fibrosis Nutrition Counseling
- Depression Nutrition Counseling
- Diabetes Complications Prevention
- Diabetes Foot Care
- Diabetes Management
- Diabetes Self-Care Planning
- Diabetes Self-Efficacy Assessment
- Diabetes Self-Management
- Diabetes Support Group Facilitation
- Diabetes Treatment
- Diabetic Eye Exam
- Diabetic Foot Exam
- Diabetic Ketoacidosis Risk Assessment
- Diabetic Ketoacidosis Treatment
- Diabetic Retinopathy Nutrition Counseling
- Dietary Assessment
- Dietary Management Of Cushing Syndrome
- Dietary Supplement Counseling
- Dietary Treatment Of Goiter
- Eating For Optimal Energy
- Elder Abuse Screening And Support
- Electrolyte Management
- Endocrine Disorder Treatment
- Endocrine Disorders Treatment
- Endometriosis Nutrition Counseling
- End-Stage Renal Disease Nutrition Counseling
- Endurance Sports Nutrition
- Endurance Sports Nutrition Counseling
- Epigenetic Nutrition Counseling
- Eye Disease Treatment
- Fallopian Tube Removal
- Familial Medullary Thyroid Carcinoma (FMTC) Treatment
- Fatigue Management
- Fine-Needle Aspiration Of Thyroid Nodule
- Flexibility And Mobility Nutrition Counseling
- Fluid And Electrolyte Management
- Foot Sprain Treatment
- Ganglion Cyst Excision
- Gastric Surgery
- Geriatric Nutrition Counseling
- Geriatric Wound Care Nutrition Counseling
- Gestational Diabetes Management
- Gland Disorder Treatment
- Gland Dysfunction Treatment
- Glaucoma Nutrition Counseling
- Glucometer Use
- Glucose Control Management
- Glycemic Variability Assessment
- Goiter Treatment
- Grave's Orbitopathy Treatment
- Grocery Shopping Assistance
- Growth Hormone Follow-Up
- Growth Hormone Level Monitoring
- Growth Hormone Screening
- Gut Health Nutrition Counseling
- Gynecological Cancer Screening
- Hashimoto's Thyroiditis Treatment
- Health Leadership
- Healthy Weight Loss Guidance
- Heart Disease Prevention
- Heart Healthy Lifestyle Counseling
- High Cholesterol Management
- High Cholesterol Nutrition Counseling
- Hormone Balancing Nutrition Counseling
- Hormone Imbalance Treatment
- Hormone Replacement Therapy
- Hypercalcemia Nutrition Management
- Hypercalcemia Treatment
- Hyperglycemic Hyperosmolar Nonketotic Syndrome (HHNS) Treatment
- Hyperparathyroidism Dietary Treatment
- Hyperthyroidism Nutrition Counseling
- Hyperthyroidism Treatment
- Hypoparathyroidism Treatment
- Hypothyroidism Diet Planning
- Hypothyroidism Treatment
- Insulin Dose Titration
- Insulin Pen Training
- Insulin Resistance Nutrition Counseling
- Insulin Resistance Treatment
- Insulin Syringe Use
- Islet Xenotransplant
- Ketogenic Diet Planning
- Kidney Disease Treatment
- Kidney Transplant Education
- Kinesiology Analysis
- Lifestyle Modification
- Lipid Profile
- Lobectomy
- Meal Planning
- Menopause Nutrition Counseling
- Mental Health Support During Pregnancy
- Mental Wellness Programs
- Mind-Body Nutrition Counseling
- Mineral Deficiency Treatment
- Motivational Interviewing
- Movement Screening
- Multiple Endocrine Neoplasia (MEN) Testing
- Neuroendocrine Disorder Treatment
- Neuroendocrine Tumor Treatment
- Nutrient Deficiency Screening
- Nutrient Supplementation Planning
- Nutrition Counseling
- Nutrition Science Education
- Obesity Treatment
- One-On-One Diabetes Education
- Oral Medication Therapy For Diabetes
- Osteoporosis Nutrition Counseling
- Osteoporosis Prevention Treatment
- Pancreatic Disease Management
- Paraganglioma Treatment
- Parathyroid Biopsy
- Parathyroid Cancer Treatment
- Parathyroid Disease Treatment
- Parathyroid Disorder Treatment
- Parathyroid Hormone Regulation
- Parathyroid Tumor Surgery
- Parathyroid Ultrasound
- Pcos Treatment
- Perimenopause Nutrition Counseling
- Personalized Meal Planning
- Pheochromocytoma Treatment
- Physical Activity Counseling
- Pioglitazone Therapy
- Pituitary Apoplexy Treatment
- Pituitary Biopsy
- Pituitary Cancer Treatment
- Pituitary Disorder Treatment
- Pituitary Disorders Nutrition Counseling
- Pituitary Gland Surgery
- Pituitary Medication Management
- Pituitary Surgery
- Pituitary Tumor Embolization
- Pituitary Tumor Surgery
- Pituitary Tumor Treatment
- Polycystic Ovary Syndrome (PCOS) Treatment
- Post-Operative Nutrition Counseling
- Pre- And Post-Bariatric Surgery Nutrition Counseling
- Pre- And Post-Chemotherapy Nutrition Counseling
- Prediabetes Management
- Pregnancy Nutrition Counseling
- Prenatal Substance Abuse Screening
- Pressure Ulcer Nutrition Counseling
- Primary Hyperparathyroidism Treatment
- Probiotic Therapy
- Prolactinoma Treatment
- Psoriasis Nutrition Counseling
- Pulmonary Exercise Testing
- Relapse Prevention
- Resting Metabolic Rate (RMR) Testing
- Secondary Hyperparathyroidism Treatment
- Skin Allergy Testing
- Skin Health Education
- Sports Nutrition Counseling
- Sports Performance Nutrition Counseling
- Strength Training Nutrition Counseling
- Stress Management For Diabetes
- Stroke Nutrition Counseling
- Surgical Recovery Nutrition Counseling
- Tertiary Hyperparathyroidism Treatment
- Testicular Ultrasound
- Thyroid Acropachy Treatment
- Thyroid Cancer Ablation
- Thyroid Cancer Chemotherapy
- Thyroid Cancer Lymph Node Dissection
- Thyroid Cancer Treatment
- Thyroid Crisis Treatment
- Thyroid Dermopathy Treatment
- Thyroid Disease Management
- Thyroid Disease Treatment
- Thyroid Health Nutrition Counseling
- Thyroid Lymphoma Treatment
- Thyroid Medication Management
- Thyroid Nodule Treatment
- Thyroid Storm Surgery
- Thyroid Storm Treatment
- Thyroidectomy
- Total Parenteral Nutrition
- Travel Safety Advice
- Vaccine Development And Policy
- Vision Loss Prevention
- Vitamin And Mineral Deficiency Treatment
- Vitamin Deficiency Treatment
- Weight Management For Healthy Weight
- Weight Measurement
- Yoga Coaching
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.
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List of insurance plans we accept
- TRICARE East Select
- United HealthCare Community Plan - Maryland Health Choice Program
- Private Fee-for-Service Plans (PFFS)
- United Healthcare Choice
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- CareFirst Group Medicare Advantage
- IH-HMO
- CareFirst MedStar Select PPO
- Aetna Student Health Insurance
- Medicare FFS
- Aetna HMO
- CIGNA HMO Open Access
- Uniformed Services Family Health Plan
- UnitedHealthcare and AARP Medicare Complete Plans
- IH-POS Plus
- Lasso Healthcare - Medicare Medical Savings Account
- United Healthcare Select Plus (POS)
- Aetna VA Exchange
- Aetna Quality Point of Service (POS)
- Anthem BCBS of VA HealthKeepers (HMO)
- Cigna Preferred Medicare (HMO)
- Aetna Better Health of MD
- Blue Choice Advantage
- POS OA
- HumanaChoice PPO
- M.D. IPA (HMO)
- Aetna Premier 200PD
- Aetna Basic
- Humana Medicare Advantage - HMO Open Access
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- Cigna True Choice Medicare (PPO)
- Humana Gold Plus HMO
- Geisinger Medicare Advantage
- CIGNA HMO & Network (HMO)
- Anthem BCBS Medi Blue Plus
- Erickson Advantage Plans
- UnitedHealthcare Medicare Adv. Special Needs Plans
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- IH-Open Network Only Plus
- First Health PPO
- HealthyBlue PPO
- Anthem BCBS Medi Blue Dual Adv
- United Student Resources
- IH-Open HMO Option
- Kaiser Permanente Medicare Advantage Signature and Select
- Cigna Alliance Medicare (HMO)
- CareFirst Blue Choice Opt Out Open Access
- CIGNA Connect EPO
- TRICARE East Prime
- CareFirst Maryland Point of Service Plan
- CIGNA SureFit (HMO)
- Magellan Complete Care of VA - VA Medicaid MCO
- Kaiser Permanente Flexible Choice POS Cardiac Global
- Select HMO/HealthFund/Health Network
- Choice Care Network/HUMANA (PPO)
- Aetna Signature Administrator PPO/TPA
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- HighMark
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- M.D. IPA Preferred (POS)
- Aetna Managed Choice (POS)
- Health Services for Children with Special Needs
- Kaiser Permanente Select - Added Choice
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- Amerigroup DC Healthy Families
- CareFirst Federal Employee Program (Std. & Basic PPO)
- DC/MD SHOP QHP Small Business Plans
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- IH-Open EPO Plus
- CIGNA POS/Network POS
- Aetna Advantage 6350
- Healthy Blue (HMO, POS)
- Kaiser Permanente Select Cardiac Global
- Choice POS II Open Access
- Aetna Managed Choice Open Access (POS)
- IH-PPO
- Medicare Advantage - Advantra Value (PPO)
- NYC Medicare Advantage Plus
- Employee Health Plan
- Advantra Platinum (PPO)
- CareFirst Blue Card Program
- Kaiser Permanente Signature - Added Choice
- United Healthcare Options (PPO)
- Coventry Health Care of Virginia
- CareFirst Maryland Indemnity or PPO
- Johns Hopkins Advantage MD PLUS PPO
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- United Healthcare Select HMO - EPO/NPP
- Choice POS II
- Johns Hopkins Advantage MD HMO
- United Healthcare Choice Plus
- IH-Indemnity
- CareFirst MedStar PPO
- Beech Street PPO
- Maryland Physicians Care MCO
- CareFirst NASCO
- Optimum Choice
- WellPoint Maryland - Maryland Health Choice
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- Aetna Elect Choice/ Open Access (POS)
- CareFirst FEP Blue Focus
- UHC Passport
- AmeriHealth Caritas DC Healthcare Alliance
- AmeriHealth Caritas DC Healthy Families
- Core Essential (HMO)
- Veterans Affairs Community Care Network
- IH-Open POS Plus
- Anthem Federal Employee Program Standard
- Tricare Reserve Select
- MedStar Family Choice DC Healthy Families
- Humana Medicare Advantage - PPO
- Kaiser Maryland Medicaid MCO
- Medicare Direct
- CIGNA Indemnity
- Private Health Care Systems (PPO)
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- HumanaChoice Honor's plan PPO
- Aetna Worker's Compensation Network
- Great-West Healthcare POS/CIGNA
- United Healthcare Community Plan - VA Medicaid MCO
- Aetna Advantage 5750
- UnitedHealthcare Individual Exchange Plans
- Johns Hopkins Advantage MD PPO
- United Healthcare Choice Plus Cardiac Global
- Aetna Open Choice (PPO)
- BlueChoice Open Access
- CIGNA EPO
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- CIGNA PPO
- AMERIVANTAGE/Amerigroup Community Care
- Aetna Classic 5000PD
- Aetna Medicare Advantage PFFS Plan
- Jai Medical Systems - Maryland Health Choice
- CareFirst Dual Prime HMO-SNP
- Choice POS
- United Healthcare Choice Cardiac Global
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
- MedStar Family Choice DC Healthcare Alliance
- Alterwood Advanatge HMO & DSNP Plans
- IH-Network Only Plus
- Cigna True Choice Plus Medicare (PPO)
- TriWest Healthcare Alliance
- TRICARE for Life East
- Priority Partners - Maryland Health Choice
- CareFirst EPO
- Choice Fund PPO
- IH-EPO Plus
- Amerigroup DC Alliance
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- Options PPO Cardiac Global
- Anthem Federal Employee Program Basic
- MultiPlan, Inc
- Aetna Advantage 6350PD
- IH-POS
- Anthem BCBS Medi Blue SNP
- Cigna Achieve Medicare (HMO C-SNP)
- First Health PPO
- Kaiser Permanente Select
- Aetna Classic 5000
- Coventry of Delaware HMO/PPO
- Coventry Health Care National Network PPO
- IH-Open HMO
- United Healthcare Navigate Cardiac Global
- CareFirst Administrators
- Kaiser Permanente Signature
- Aetna Classic 3500
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- OA Plus
- CareFirst (NCA) Indemnity
- Kaiser Permanente Medicare Plus
- Police and Fire Clinic
- Aetna Traditional Choice (PPO)
- Network OA
- CareFirst BlueChoice HMO
- Aetna Better Health of VA
- CareFirst Blue Preferred PPO
- CareFirst Community Health Plan of MD
- Optimum Choice Preferred (POS)
- CIGNA PPO Plus
- Mamsi Life & Health (Indem./PPO)
- Optima Family Care MCO - VA Medicaid MCO
- Aetna Medicare Advantage HMO & PPO Plans
- MedStar Family Choice - Maryland Health Choice
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- Navigate
- Sentara Health
- Anthem BCBS of VA HealthKeepers Plus
- United Medicare Private Fee-for-Service (PFFS) plans
- IH-Open POS II
- Cigna TotalCare (HMO D-SNP)
- Kaiser Permanente Flexible Choice 3-tier POS
- OCI Direct (HMO)
- Kaiser Permanente HMO Plus and DHMO Plus Member
Education
Board Certification: ,
Board Certification: ,
Fellowship: MedStar Union Memorial Hospital at Baltimore (2024)
Residency: Hackensack University Medical Center-GME (2019)
Medical School: Instituto Tecnologico de Santo Domingo (2013)