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
- 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
- Nontoxic Goiter
- Obesity
- Osteochondropathies
- Osteopenia
- Osteoporosis
- Ovarian Cysts
- Ovarian Dysfunction
- Parathyroid Adenoma
- Parathyroid Cancer
- Parathyroid Disorders
- Pituitary Adenoma
- Pituitary Apoplexy
- Pituitary Cancer
- Pituitary Disorders
- Poisoning
- Polycystic Ovary Syndrome
- Polyglandular Dysfunction
- Postmenopausal Osteoporosis
- Postprocedural Complications
- Prediabetes
- Presence Of Functional Implants
- Primary Hyperparathyroidism
- Proteinuria
- 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
- 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
- Aldosteronoma Management
- Anemia Management
- Automated Insulin Delivery
- Bariatric Nutrition Counseling
- Bariatric Surgery Counseling
- Bariatric Surgery Nutrition Counseling
- Binge Eating Disorder Treatment
- Blood Glucose Correction For High Readings
- Body Mass Index (BMI) Evaluation
- Carbohydrate Counting For Meal Planning
- Cardiovascular Health Nutrition Counseling
- Cervical Lymph Node Dissection
- Chronic Fatigue Syndrome Nutrition Counseling
- 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
- 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
- Endurance Sports Nutrition
- Endurance Sports Nutrition Counseling
- Epigenetic Nutrition Counseling
- Familial Medullary Thyroid Carcinoma (FMTC) Treatment
- Fatigue Management
- Fine-Needle Aspiration Of Thyroid Nodule
- Flexibility And Mobility Nutrition Counseling
- Fluid And Electrolyte Management
- Geriatric 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
- Growth Hormone Follow-Up
- Growth Hormone Level Monitoring
- Growth Hormone Screening
- Gut Health Nutrition Counseling
- Hashimoto's Thyroiditis Treatment
- Healthy Weight Loss Guidance
- 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
- Lipid Profile
- Meal Planning
- Menopause Nutrition Counseling
- Mind-Body Nutrition Counseling
- Mineral Deficiency Treatment
- 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
- Primary Hyperparathyroidism Treatment
- Probiotic Therapy
- Prolactinoma Treatment
- Psoriasis Nutrition Counseling
- Resting Metabolic Rate (RMR) Testing
- Secondary Hyperparathyroidism Treatment
- 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
- 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
- Cigna Achieve Medicare (HMO C-SNP)
- Uniformed Services Family Health Plan
- Choice POS II Open Access
- First Health PPO
- Private Health Care Systems (PPO)
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- Jai Medical Systems - Maryland Health Choice
- Cigna Preferred Medicare (HMO)
- HumanaChoice Honor's plan PPO
- IH-Indemnity
- Coventry of Delaware HMO/PPO
- Aetna Classic 3500
- Medicare Advantage - Advantra Value (PPO)
- Anthem BCBS Medi Blue SNP
- Alterwood Advanatge HMO & DSNP Plans
- Anthem BCBS of VA HealthKeepers (HMO)
- Beech Street PPO
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- IH-Network Only Plus
- Aetna Medicare Advantage HMO & PPO Plans
- CareFirst MedStar Select PPO
- Aetna Quality Point of Service (POS)
- Humana Medicare Advantage - PPO
- Johns Hopkins Advantage MD HMO
- Amerigroup DC Healthy Families
- CIGNA Connect EPO
- First Health PPO
- Humana Medicare Advantage - HMO Open Access
- Medicare Direct
- IH-Open POS II
- Cigna True Choice Plus Medicare (PPO)
- Coventry Health Care of Virginia
- Aetna Managed Choice Open Access (POS)
- CareFirst Community Health Plan of MD
- CareFirst BlueChoice HMO
- Network OA
- Optima Family Care MCO - VA Medicaid MCO
- Anthem BCBS Medi Blue Dual Adv
- CareFirst (NCA) Indemnity
- CIGNA HMO & Network (HMO)
- Johns Hopkins Advantage MD PLUS PPO
- IH-Open POS Plus
- HighMark
- CIGNA POS/Network POS
- Kaiser Permanente Select
- UnitedHealthcare Individual Exchange Plans
- Aetna Advantage 6350
- IH-Open HMO Option
- Choice POS II
- Anthem Federal Employee Program Standard
- HealthyBlue PPO
- Mamsi Life & Health (Indem./PPO)
- Cigna Alliance Medicare (HMO)
- Priority Partners - Maryland Health Choice
- Lasso Healthcare - Medicare Medical Savings Account
- Maryland Physicians Care MCO
- United Healthcare Navigate Cardiac Global
- Johns Hopkins Advantage MD PPO
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- CareFirst Maryland Indemnity or PPO
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- MedStar Family Choice - Maryland Health Choice
- United Healthcare Select HMO - EPO/NPP
- Aetna Advantage 5750
- MedStar Family Choice DC Healthy Families
- IH-POS
- AmeriHealth Caritas DC Healthy Families
- Aetna Open Choice (PPO)
- Aetna Better Health of MD
- OCI Direct (HMO)
- Aetna HMO
- CareFirst Maryland Point of Service Plan
- Kaiser Permanente Flexible Choice 3-tier POS
- UnitedHealthcare and AARP Medicare Complete Plans
- Healthy Blue (HMO, POS)
- CIGNA SureFit (HMO)
- CareFirst Blue Choice Opt Out Open Access
- Navigate
- UHC Passport
- United HealthCare Community Plan - Maryland Health Choice Program
- Kaiser Permanente Flexible Choice POS Cardiac Global
- CareFirst FEP Blue Focus
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- United Healthcare Choice Plus Cardiac Global
- Great-West Healthcare POS/CIGNA
- M.D. IPA (HMO)
- United Medicare Private Fee-for-Service (PFFS) plans
- Select HMO/HealthFund/Health Network
- Magellan Complete Care of VA - VA Medicaid MCO
- CareFirst Federal Employee Program (Std. & Basic PPO)
- Health Services for Children with Special Needs
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- Geisinger Medicare Advantage
- HumanaChoice PPO
- Erickson Advantage Plans
- Cigna TotalCare (HMO D-SNP)
- Kaiser Permanente Select Cardiac Global
- CIGNA EPO
- Veterans Affairs Community Care Network
- Police and Fire Clinic
- Aetna Signature Administrator PPO/TPA
- Kaiser Permanente Medicare Plus
- CIGNA PPO Plus
- DC/MD SHOP QHP Small Business Plans
- United Healthcare Community Plan - VA Medicaid MCO
- Aetna Traditional Choice (PPO)
- Cigna True Choice Medicare (PPO)
- Optimum Choice
- United Healthcare Choice Cardiac Global
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- IH-Open HMO
- Aetna Managed Choice (POS)
- AMERIVANTAGE/Amerigroup Community Care
- BlueChoice Open Access
- OA Plus
- Tricare Reserve Select
- Core Essential (HMO)
- Aetna Premier 200PD
- M.D. IPA Preferred (POS)
- Coventry Health Care National Network PPO
- Aetna Classic 5000
- Choice Care Network/HUMANA (PPO)
- Employee Health Plan
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- Advantra Platinum (PPO)
- United Healthcare Choice
- Choice Fund PPO
- MedStar Family Choice DC Healthcare Alliance
- UnitedHealthcare Medicare Adv. Special Needs Plans
- WellPoint Maryland - Maryland Health Choice
- Anthem BCBS Medi Blue Plus
- Kaiser Permanente Medicare Advantage Signature and Select
- United Healthcare Select Plus (POS)
- Aetna Student Health Insurance
- Aetna Basic
- Sentara Health
- Options PPO Cardiac Global
- POS OA
- United Healthcare Choice Plus
- IH-Open Network Only Plus
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- IH-PPO
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- CareFirst NASCO
- CIGNA Indemnity
- Optimum Choice Preferred (POS)
- Anthem Federal Employee Program Basic
- Aetna Elect Choice/ Open Access (POS)
- IH-HMO
- Kaiser Permanente Select - Added Choice
- United Healthcare Options (PPO)
- Humana Gold Plus HMO
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- Amerigroup DC Alliance
- TRICARE for Life East
- TriWest Healthcare Alliance
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- AmeriHealth Caritas DC Healthcare Alliance
- CareFirst Blue Preferred PPO
- CareFirst Administrators
- TRICARE East Select
- Choice POS
- IH-Open EPO Plus
- Kaiser Permanente HMO Plus and DHMO Plus Member
- CareFirst MedStar PPO
- Kaiser Permanente Signature - Added Choice
- Private Fee-for-Service Plans (PFFS)
- CIGNA PPO
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- IH-EPO Plus
- Aetna Classic 5000PD
- NYC Medicare Advantage Plus
- IH-POS Plus
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- CIGNA HMO Open Access
- Aetna Better Health of VA
- Kaiser Maryland Medicaid MCO
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- CareFirst Dual Prime HMO-SNP
- Aetna Medicare Advantage PFFS Plan
- CareFirst EPO
- TRICARE East Prime
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- Anthem BCBS of VA HealthKeepers Plus
- Aetna VA Exchange
- Aetna Worker's Compensation Network
- United Student Resources
- CareFirst Blue Card Program
- Aetna Advantage 6350PD
- CareFirst Group Medicare Advantage
- Kaiser Permanente Signature
- Blue Choice Advantage
- Medicare FFS
- MultiPlan, Inc
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
Education
Board Certification: American Board of Internal Medicine, Internal Medicine
Board Certification: American Board of Internal Medicine, Endocrinology
Fellowship: MedStar Union Memorial Hospital at Baltimore (2024)
Residency: Hackensack University Medical Center-GME (2019)
Medical School: Instituto Tecnologico de Santo Domingo (2013)