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