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