Deborah Beth Horwitz, MD| Internal Medicine | MedStar Health
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Deborah Beth Horwitz

Deborah Beth Horwitz, MD
Provider is directly employed by MedStar Health

4.7 out of 5 (2823 reviews)

Specialties: Internal Medicine

Languages: English

(301) 897-5193

Not Accepting New Patients Not Accepting New Patients

About me

Dr. Horwitz has been awarded recognition by the National Committee for Quality Assurance Physician Practice Connections® Patient-Centered Medical Home Program (PPC-PCMH). Recognition identifies clinicians who make the most of clinical information to make better decisions and provide better follow-up care.
Dr. Horwitz was recognized by Washingtonian magazine as a Top Doctor- 2012, 2013, 2014, 2015, 2016, 2018.

Clinical areas of focus

  • Digestive System Symptoms
  • Heart Failure Medication Management
  • High Blood Pressure
  • Physical Exams
  • Preventive Action
  • Respiratory Disorders
  • Subclinical Hypothyroidism
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Conditions and procedures

Conditions I treat

  • Abdomen, Lower Back, Pelvis, And Genital Injury
  • Abdominal Pain
  • Abnormal Blood Glucose Levels
  • Abnormal Breathing
  • Abnormal Drug Findings In Blood
  • Abnormal Function Study Results
  • Abnormal Heart Rhythm
  • Abnormal Immunological Findings
  • Abnormal Lung Imaging Results
  • Abnormal Urine Test Results
  • Acute Bronchitis
  • Acute Cholecystitis
  • Acute Endocarditis
  • Acute Myocardial Infarction
  • Acute Pancreatitis
  • Acute Sinusitis
  • Adrenal Crisis
  • Adrenal Gland Disorder
  • Allergic Contact Dermatitis
  • Allergies
  • Anemia
  • Angina
  • Anxiety
  • Aphagia And Dysphagia
  • Ascites
  • Atherosclerosis
  • Back Pain
  • Bipolar Disorder
  • Bladder Disorders
  • Bladder Incontinence
  • Bleeding Disorders
  • Body Region Injury
  • Bone Density Disorder
  • Bone Disorders
  • Bowel Obstruction
  • Breast Lump
  • Bronchiectasis
  • Bronchiolitis
  • Bronchitis
  • Bursopathy
  • Candidiasis
  • Cardiac Arrhythmias
  • Cardiometabolic Disorders
  • Cellulitis
  • Cellulitis And Lymphangitis
  • Central Sleep Apnea
  • Chest Pain
  • Choledocholithiasis
  • Cholestasis
  • Chronic Asthma
  • Chronic Fatigue Syndrome
  • Chronic Kidney Disease
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Clotting Disorders
  • Cocaine Related Disorders
  • Cognitive Function Disorders
  • Colitis
  • Colon Disease
  • Congenital Malformations Of Musculoskeletal System
  • Contact With Communicable Diseases
  • Convulsions
  • Coronary Artery Disease
  • Cough
  • Crohn's Disease
  • Crohn's Disease [Regional Enteritis]
  • Cushing Syndrome
  • Cutaneous Abscess, Furuncle And Carbuncle
  • Cystitis
  • Deforming Dorsopathies
  • Dementia
  • Depression
  • Depressive Episode
  • Diabetes Insipidus
  • Diabetic Nephropathy
  • Diabetic Neuropathy
  • Digestive System Diseases
  • Digestive System Symptoms
  • Diseases Of Esophagus
  • Diseases Of Lip And Oral Mucosa
  • Diseases Of Salivary Glands
  • Diseases Of Upper Respiratory Tract
  • Disorders Of Fluid, Electrolyte And Acid
  • Disorders Of Mineral Metabolism
  • Disorders Of Nose And Nasal Sinuses
  • Disorders Of White Blood Cells
  • Disturbances Of Skin Sensation
  • Diverticulitis
  • Dizziness And Lightheadedness
  • Dorsalgia
  • Dorsopathies
  • Duodenal Ulcer
  • Duodenitis
  • Dyslipidemia
  • Dyspnea
  • Eczema (ATOPIC DERMATITIS)
  • Electrolyte Disorders
  • Emotional State Symptoms
  • Emphysema
  • Endocrine Disorders
  • Endocrine Hypertension
  • Epilepsy And Seizures
  • External Hemorrhoids
  • Extrapyramidal And Movement Disorders
  • Eye And Adnexa Disorders
  • Family History Of Malignant Neoplasm
  • Fatigue
  • Fever
  • Fibromyalgia
  • Finger, Hand, And Wrist Open Wound
  • Flatulence
  • Functional Intestinal Disorders
  • Fungal Otitis Externa
  • Gait And Balance Problems
  • Gallstones
  • Gastritis
  • Gastroesophageal Reflux Disease
  • Gastrointestinal Bleeding
  • Genitourinary Symptoms
  • Gout
  • Grave's Disease
  • Head Injury
  • Headache
  • Heart Disease
  • Hematuria
  • Hemorrhagic Conditions
  • Hemorrhoids
  • Hepatitis
  • High Blood Pressure
  • High Cholesterol
  • Hip Pain
  • Hordeolum And Chalazion
  • Hyperglycemia
  • Hypertension
  • Hypertension Crisis
  • Hyperthyroidism
  • Hypoglycemia
  • Hypotension
  • Inflammatory Spondylopathies
  • Influenza
  • Influenza Due To Other Identified Influenza Virus
  • Intervertebral Disc Disorders
  • Irritable Bowel Syndrome
  • Ischemic Heart Disease
  • Joint Disorder
  • Kidney And Ureter Calculus
  • Kidney And Ureter Disorders
  • Kidney Stones
  • Knee Pain
  • Liver Cirrhosis
  • Liver Enzyme Abnormalities
  • Liver Failure
  • Lower Back Pain
  • Lumbar Disc Disease
  • Lung Disease
  • Malaise And Fatigue
  • Malignant Neoplasm
  • Malignant Neoplasm Of Meninges
  • Mesothelioma
  • Middle Ear Disorders
  • Migraine
  • Mononeuropathy Of Lower Limb
  • Mononeuropathy Of Upper Limb
  • Multiple Myeloma
  • Multiple Sclerosis
  • Muscle Disorders
  • Nail Disorders
  • Nephrotic Syndrome
  • Nervous And Musculoskeletal Symptoms
  • Noninfective Gastroenteritis
  • Nonrheumatic Mitral Valve Disease
  • Nontoxic Goiter
  • Obesity
  • Obstructive And Reflux Uropathy
  • Ocular Myasthenia Gravis
  • Osteoarthritis
  • Osteoporosis
  • Pain In Throat And Chest
  • Pancreatic Diseases
  • Pancreatitis
  • Paraplegia And Quadriplegia
  • Paroxysmal Ventricular Tachycardia
  • Peptic Ulcer Disease
  • Pericardium Diseases
  • Peripheral Artery Disease
  • Peripheral Vascular Disease Of The Intestines
  • Persistent Pulmonary Hypertension
  • Personal History Of Diseases And Conditions
  • Personal Risk Factors
  • Persons Encountering Health Services
  • Pneumonia
  • Pneumonitis Due To Solids And Liquids
  • Polycystic Liver Disease
  • Polyuria
  • Problems Related To Lifestyle
  • Pulmonary Heart Disease
  • Rash
  • Renal Insufficiency
  • Respiratory Disorders
  • Respiratory Failure
  • Rheumatoid Arthritis
  • Sepsis
  • Shoulder And Upper Arm Tendon Injury
  • Shoulder Burns
  • Sickle
  • Sickle Cell Disease
  • Skin And Soft Tissue Infections
  • Skin And Subcutaneous Tissue Disorders
  • Skin Changes
  • Skin Swelling And Lumps
  • Sleep Disorders
  • Social Anxiety Disorder
  • Soft Tissue Pain
  • Sore Throat
  • Specified Health Status
  • Speech Disturbances
  • Spinal Stenosis
  • Spondylosis
  • Subclinical Hypothyroidism
  • Subcortical Infarction
  • Superficial Knee Injury
  • Systemic Connective Tissue Involvement
  • Systemic Lupus Erythematosus
  • Tachycardia
  • Tendinous Disorders
  • Thrombocytopenia
  • Thyroid Disorders
  • Transplanted Kidney Failure
  • Type 2 Diabetes
  • Type 2 Diabetes Mellitus
  • Ulcerative Colitis
  • Urinary Retention
  • Urinary Tract Infection
  • Urological Disorders
  • Valve Disease With Congestive Heart Failure
  • Vasculitis
  • Vein Disorders
  • Venous Embolism
  • Venous Ulcers
  • Ventral Hernia
  • Vestibular Disorders
  • Vision Disturbances
  • Vitamin Deficiency
  • Vitamin Deficiency Anemia
  • Volume Depletion
  • Vomiting And Nausea
  • Weight Loss
  • Zoster
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Procedures I perform

  • 24-Hour Blood Pressure Monitoring
  • Abdominal Aortic Aneurysm (AAA) Screening
  • Abscess Incision And Drainage
  • Adhd Assessment
  • Advance Directive Planning
  • Aging Education
  • Aging Life Care
  • Aging Resource Coordination
  • Aging Well Resources
  • Anticoagulation Therapy
  • Anxiety Disorder Screening
  • Anxiety Treatment
  • Arterial Pressure Monitoring
  • Asthma Management
  • Behavioral Assessment
  • Blood Chemistry Test
  • Blood Pressure Monitoring
  • Body Mass Index (BMI) Evaluation
  • Cardiovascular Health Promotion
  • Cervical Epidural Steroid Injection
  • Cholesterol Screening
  • Chronic Cough Treatment
  • Chronic Headache Treatment
  • Community Health
  • Community Health Education
  • Congestive Heart Failure Management
  • Continuous Glucose Monitoring System
  • Copd Management
  • Cystitis Treatment
  • Delirium Prevention
  • Diabetes Screening
  • Diabetes Treatment
  • Digital Rectal Exam
  • Disease Management Education
  • Disease Prevention
  • Electrocardiogram
  • Failure To Thrive Evaluation And Management
  • Falls Prevention
  • Fibrinolytic Therapy
  • Flu Shot
  • Functional Abdominal Pain Treatment
  • Genetic Mutation Testing
  • Geriatric Care
  • Geriatric Care Management
  • Geriatric Community Resources
  • Geriatric Health Screening
  • Grief Counseling
  • Gynecological Cancer Screening
  • Health Maintenance Exam
  • Health Promotion Counseling
  • Healthy Aging Resources
  • Heart Failure Medication Management
  • High Cholesterol Management
  • Home Safety Evaluations
  • Hormone Replacement Therapy
  • Hyperlipidemia Treatment
  • Hypertension Treatment
  • Immunization Administration
  • Impacted Earwax Removal
  • Intravenous Vitamin Therapy
  • Labs And Blood Work
  • Lactate Dehydrogenase
  • Lipid Profile
  • Medication Administration And Management
  • Mental Health Medication Management
  • Mental Status Exam
  • Milk Allergy Treatment
  • Mixed Venous Oxygen Saturation
  • Muscle Injection
  • Nebulizer Therapy
  • Neuropsychological Testing
  • Nitrogen Washout Treatment
  • Osteoporosis Prevention Treatment
  • Osteoporosis Risk Assessment
  • Pain Medication Management
  • Palliative Care Coordination
  • Pap Smear
  • Parenting Resources
  • Pharmacogenomics
  • Pharmacological Therapy
  • Physical Exams
  • Pioglitazone Therapy
  • Pre-Operative Clearance
  • Preventive Action
  • Rash Treatment
  • Respiratory Infection Treatment
  • Rheumatology Treatment
  • Senior Coaching
  • Sexually Transmitted Disease Testing
  • Sinus Infection Treatment
  • Sinusitis Treatment
  • Sleep Disorder Management
  • Sore Throat Management
  • Spirometry Test
  • Staple Removal
  • Suture Removal
  • Tobacco Cessation
  • Transitional Care Planning
  • Tuberculosis Testing
  • Ulcerative Colitis-Associated Arthritis Treatment
  • Undersea Medicine Consultation
  • Urinary Protein Test
  • Urinary Tract Infection (UTI) Treatment
  • Urinary Tract Infection Treatment
  • Vaccinations
  • Venous Blood Collection
  • Venous Ulcer Treatment
  • Ventricular Fibrillation Treatment
  • Wellness Exams
  • Wellness Services
  • Women's Health Exam
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Practice locations

Distance from Change LocationEnter your Location

6410 Rockledge Dr
Ste 401
Bethesda, MD, 20817

301-897-5001

Fax 301-897-5193

Get Directions

miles away

Fax 301-897-5193

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.

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

Education

Residency: New England Medical Center (1999)

Internship: New England Medical Center (1997)

Medical Education: Temple University School of Medicine (1996)

Ratings and reviews

  • Explanations the care provider gave you about your problem or condition

    4.8
  • Extent to which the care provider listened to you

    4.7
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    4.8
  • Provider included you in decisions

    4.8
  • Concern the care provider showed for your questions or worries

    4.8
  • Likelihood of recommending this care provider to others

    4.7
  • Apr 25, 2026

    Dr. Horwitz was excellent. She listened and provided great information and advice. She really shows that she cares.

  • Apr 24, 2026

    Always an excellent experience when working w Dr.Horwitz

  • Apr 22, 2026

    Dr. Horwitz was attentive and helpful. She also gave me an excellent summary note.