About me
Nelly Arnouk, MD, is a board-certified Internal Medicine physician and endocrinologist at MedStar Health. She sees patients at the Good Health Center at MedStar Good Samaritan Hospital. Dr. Arnouk specializes in the diagnosis and treatment of diabetes, thyroid disease, and obesity. Her particular interest is in osteoporosis and bone health. She has published research in hypercalcemia and endocrine side effects of cancer treatment with immune checkpoint inhibitors. She is part of the Bone Health and Fracture Prevention Program team at MedStar Health. Dr. Arnouk completed her residency in Internal Medicine and her fellowship program in Endocrinology at MedStar Union Memorial Hospital.
She is a member of the American Association of Clinical Endocrinologists and the American Endocrinology Society.
Dr. Arnouk is fluent in Arabic.
Philosphy of care
“My philosophy of care revolves around understanding that every patient’s journey is unique. I am committed to listening attentively to your concerns, valuing your input, and tailoring our medical plan to align with your individual needs and goals. Together, we will embark on a shared path toward optimal health and well-being. Guided by the latest advancements in endocrinology, I am dedicated to providing evidence-based treatments and innovative solutions."
Clinical areas of focus
- Adult Osteomalacia
- Cardiometabolic Disorders
- Diabetes (TYPE 1)
- Fine-Needle Aspiration Of Thyroid Nodule
- Osteopenia
- Osteoporosis
- Osteoporosis Prevention Treatment
- Thyroid Disorders
- Type 2 Diabetes Mellitus
Conditions and procedures
Conditions I treat
- Adrenal Crisis
- Adult Osteomalacia
- Bone Density Disorder
- Cardiometabolic Disorders
- Diabetes (TYPE 1)
- Disorders Of Carbohydrate Metabolism
- Hypercalcemia (ELEVATED CALCIUM LEVELS)
- Hyperparathyroidism
- Hypocalcemia
- Obesity
- Osteopenia
- Osteoporosis
- Thyroid Disorders
- Thyroid Nodules
- Type 2 Diabetes Mellitus
Procedures I perform
- Bone Density Test
- Continuous Glucose Monitoring System
- Dexa Scans
- Dexamethasone Suppression Test
- Fine-Needle Aspiration Of Thyroid Nodule
- Osteoporosis Prevention Treatment
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
- IH-EPO Plus
- MD IPA (HMO) & MD IPA Preferred Cardiac Global
- Aetna Medicare Advantage HMO & PPO Plans
- CareFirst Dual Prime HMO-SNP
- CareFirst FEP Blue Focus
- Anthem BCBS of VA Key Care POS/PPO/Indemnity
- CIGNA EPO
- Core Essential (HMO)
- HumanaChoice Honor's plan PPO
- Kaiser Permanente Signature
- United Medicare Private Fee-for-Service (PFFS) plans
- Fee-for-Service (FFS) District of Columbia, Maryland and Virginia Medicaid
- CareFirst Community Health Plan of MD
- Johns Hopkins Advantage MD PPO
- Aetna Better Health of MD
- Cigna Preferred Medicare (HMO)
- M.D. IPA (HMO)
- United Healthcare Navigate Cardiac Global
- Aetna Advantage 6350PD
- Choice POS II
- CareFirst Federal Employee Program (Std. & Basic PPO)
- UHC Passport
- Optima Family Care MCO - VA Medicaid MCO
- Amerigroup DC Alliance
- Kaiser Permanente Select Cardiac Global
- Kaiser Permanente Medicare Advantage Signature and Select
- United Healthcare Select HMO - EPO/NPP
- BCBS Out-of-State Medicare Plans (Blue Advantage)
- United Healthcare Select Plus (POS)
- UnitedHealthcare Medicare Advantage DSNP District of Columbia
- Select HMO/HealthFund/Health Network
- CIGNA Connect EPO
- CIGNA PPO Plus
- Aetna Classic 5000
- Police and Fire Clinic
- Aetna Student Health Insurance
- IH-Open EPO Plus
- IH-Open Network Only Plus
- Beech Street PPO
- AmeriHealth Caritas DC Healthcare Alliance
- CIGNA SureFit (HMO)
- Lasso Healthcare - Medicare Medical Savings Account
- Kaiser Permanente HMO Plus and DHMO Plus Member
- Kaiser Maryland Medicaid MCO
- DC/MD SHOP QHP Small Business Plans
- Medicare Direct
- CareFirst Maryland Point of Service Plan
- Aetna Traditional Choice (PPO)
- IH-Indemnity
- Priority Partners - Maryland Health Choice
- TriWest Healthcare Alliance
- IH-Network Only Plus
- IH-Open HMO
- CIGNA Indemnity
- Choice Care Network/HUMANA (PPO)
- Cigna Alliance Medicare (HMO)
- Cigna Achieve Medicare (HMO C-SNP)
- MedStar Family Choice DC Healthy Families
- Geisinger Medicare Advantage
- Optimum Choice & Optimum Choice Preferred (POS) Cardiac Global
- Health Services for Children with Special Needs
- First Health PPO
- AMERIVANTAGE/Amerigroup Community Care
- Anthem Federal Employee Program Basic
- HealthyBlue PPO
- CareFirst (NCA) Indemnity
- OA Plus
- Erickson Advantage Plans
- United Healthcare Choice Plus
- CareFirst Administrators
- HighMark
- Cigna True Choice Medicare (PPO)
- Optimum Choice
- Aetna Medicare Advantage PFFS Plan
- Veterans Affairs Community Care Network
- Aetna Elect Choice/ Open Access (POS)
- Johns Hopkins Advantage MD PLUS PPO
- Private Health Care Systems (PPO)
- UnitedHealthcare and AARP Medicare Complete Plans
- IH-Open HMO Option
- AmeriHealth Caritas DC Healthy Families
- First Health PPO
- M.D. IPA Preferred (POS)
- Aetna Managed Choice Open Access (POS)
- IH-HMO
- Aetna Managed Choice (POS)
- MedStar Family Choice - Maryland Health Choice
- WellPoint Maryland - Maryland Health Choice
- Great-West Healthcare POS/CIGNA
- UHC Group Medicare Advantage Plans (HMO, POS, PPO)
- CareFirst MedStar Select PPO
- Uniformed Services Family Health Plan
- Coventry of Delaware HMO/PPO
- Aetna Elect Choice/ EPO (Aetna Health Fund)
- Medicare FFS
- Aetna Classic 3500
- IH-POS Plus
- CareFirst BlueChoice HMO
- Blue Choice Advantage
- United HealthCare Community Plan - Maryland Health Choice Program
- United Healthcare Select HMO-EPO/NPP Cardiac Global
- Cigna TotalCare (HMO D-SNP)
- Navigate
- Aetna Classic 5000PD
- Anthem BCBS of VA HealthKeepers Plus
- United Student Resources
- Maryland Physicians Care MCO
- UnitedHealthcare Individual Exchange Plans
- Private Fee-for-Service Plans (PFFS)
- Aetna HMO
- CareFirst Blue Choice Opt Out Open Access
- United Healthcare Choice
- Choice Fund PPO
- Coventry Health Care National Network PPO
- Network OA
- Aetna Quality Point of Service (POS)
- Aetna Signature Administrator PPO/TPA
- Choice POS
- Aetna Worker's Compensation Network
- TRICARE East Prime
- TRICARE East Select
- Magellan Complete Care of VA - VA Medicaid MCO
- Coventry Health Care of Virginia
- BlueChoice Open Access
- Aetna Advantage 5750
- Aetna Premier 200PD
- TRICARE for Life East
- Aetna Basic
- Tricare Reserve Select
- Mamsi Life & Health (Indem./PPO) Cardiac Global
- CareFirst Group Medicare Advantage prescription drug benefit (PPO)
- MultiPlan, Inc
- Aetna VA Exchange
- CIGNA HMO Open Access
- Aetna Better Health of VA
- Aetna Open Choice (PPO)
- CIGNA PPO
- CareFirst NASCO
- Optimum Choice Preferred (POS)
- OCI Direct (HMO)
- BCBS of Michigan (BCN Advantage,Security Blue, Freedom, Medicare PLUS Blue Group PPO)
- Humana Medicare Advantage - PPO
- Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
- Mamsi Life & Health (Indem./PPO)
- Anthem BCBS of VA HealthKeepers (HMO)
- Jai Medical Systems - Maryland Health Choice
- Anthem Federal Employee Program Standard
- Kaiser Permaenete Signature - Added Choice Cardiac Global
- IH-Open POS II
- Medicare Advantage - Advantra Value (PPO)
- UnitedHealthcare Medicare Adv. Special Needs Plans
- Kaiser Permanente Flexible Choice POS Cardiac Global
- Johns Hopkins Advantage MD HMO
- NYC Medicare Advantage Plus
- IH-Open POS Plus
- Amerigroup DC Healthy Families
- United Healthcare Choice Cardiac Global
- CareFirst Blue Choice Opt Out Plus Open Access (POS)
- Sentara Health
- Kaiser Permanente Flexible Choice 3-tier POS
- CIGNA POS/Network POS
- CareFirst EPO
- CareFirst Group Medicare Advantage
- Humana Gold Plus HMO
- Kaiser Permanente Medicare Plus
- POS OA
- HumanaChoice PPO
- Aetna Advantage 6350
- IH-PPO
- CareFirst MedStar PPO
- CareFirst Maryland Indemnity or PPO
- Advantra Platinum (PPO)
- Anthem BCBS Medi Blue Dual Adv
- Choice POS II Open Access
- Cigna True Choice Plus Medicare (PPO)
- United Healthcare Options (PPO)
- United Healthcare Community Plan - VA Medicaid MCO
- Anthem BCBS Medi Blue Plus
- Kaiser Permanente Select - Added Choice
- Employee Health Plan
- Anthem BCBS Medi Blue SNP
- HUMANA/Choice Care Medicare Plans (Choice, Gold Choice)
- Humana Medicare Advantage - HMO Open Access
- Options PPO Cardiac Global
- IH-POS
- MedStar Family Choice DC Healthcare Alliance
- CIGNA HMO & Network (HMO)
- Kaiser Permanente Select
- United Healthcare Choice Plus Cardiac Global
- Anthem BCBS of VA HealthKeepers (POS & POS OA)
- Healthy Blue (HMO, POS)
- CareFirst Blue Card Program
- Kaiser Permanente Signature - Added Choice
- CareFirst Blue Preferred PPO
- CareFirst BlueCross BlueShield Advantage Core/Enhanced
- Alterwood Advanatge HMO & DSNP Plans
Education
Board Certification: American Board of Internal Medicine, Internal Medicine
Board Certification: American Board of Internal Medicine, Endocrinology, Diabetes and Metabolism
Fellowship: MedStar Union Memorial Hospital at Baltimore (2023)
Residency: MedStar Union Memorial Hospital at Baltimore (2019)
Medical School: University of Damascus School of Medicine (2013)
Awards
- Baltimore magazine, Top Doctor, 2024, 2025