William James Gallagher, MD| Family Medicine | MedStar Health
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William James Gallagher

William James Gallagher, MD
Provider is directly employed by MedStar Health

4.7 out of 5 (176 reviews)

Specialties: Family Medicine

Languages: English

(301) 779-9001

Clinical areas of focus

  • Gastroesophageal Reflux Disease (GERD) In Children
  • Hypertension
  • Physical Exams
  • Respiratory Disorders
  • Type 2 Diabetes Mellitus
  • Wellness Exams
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Conditions and procedures

Conditions I treat

  • Abdomen, Lower Back, Pelvis, And Genital Injury
  • Abdomen, Lower Back, Pelvis, And Genital Open Wound
  • Abdominal Pain
  • Abnormal Blood Glucose Levels
  • Abnormal Body Structure Imaging
  • Abnormal Breast Imaging
  • Abnormal Breathing
  • Abnormal Drug Findings In Blood
  • Abnormal Function Study Results
  • Abnormal Serum Enzyme Levels
  • Abnormal Urine Test Results
  • Abnormal Vaginal Discharge
  • Acne
  • Acute Bronchitis
  • Acute Laryngitis And Tracheitis
  • Acute Pelvic Pain
  • Acute Sinusitis
  • Acute Upper Respiratory Infections Of Multiple Sites
  • Adult And Child Abuse, Neglect And Maltreatment
  • Allergic Contact Dermatitis
  • Allergic Rhinitis
  • Allergies
  • Ankle And Foot Injury
  • Ankle And Foot Ligament Sprain
  • Anogenital Warts
  • Anxiety
  • Back Pain
  • Black Eye
  • Bladder Incontinence
  • Blindness And Low Vision
  • Body Region Injury
  • Breast Inflammation
  • Bronchitis
  • Burn Injuries
  • Bursopathy
  • Candidiasis
  • Carrier Of Infectious Disease
  • Cellulitis
  • Cellulitis And Lymphangitis
  • Central Sleep Apnea
  • Chest Injury
  • Chest Pain
  • Chlamydia
  • Choledocholithiasis
  • Choroidal Nevi
  • Chronic Cough
  • Chronic Diseases Of Tonsils And Adenoids
  • Chronic Fatigue Syndrome
  • Chronic Indigestion
  • Chronic Kidney Disease
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Claudication
  • Cocaine Related Disorders
  • Conductive Hearing Loss
  • Contact With Communicable Diseases
  • Contact With Hazardous Health Exposures
  • Cough
  • Cradle Cap (SEBORRHEIC DERMATITIS)
  • Cutaneous Abscess
  • Deficiency Of B Group Vitamins
  • Deficiency Of Essential Nutrients
  • Depressive Episode
  • Dermatophytosis (RINGWORM)
  • Digestive System Symptoms
  • Diseases Of Lip And Oral Mucosa
  • Diseases Of Tongue
  • Diseases Of Upper Respiratory Tract
  • Disorders Of Lipoprotein Metabolism And Lipidemias
  • Disorders Of Mineral Metabolism
  • Disorders Of Nose And Nasal Sinuses
  • Disturbances Of Skin Sensation
  • Disturbances Of Smell And Taste
  • Dizziness And Lightheadedness
  • Dorsalgia
  • Dorsopathies
  • Duodenitis
  • Ear Infection
  • Ear Pain
  • Eating Disorders
  • Eczema
  • Eczema (ATOPIC DERMATITIS)
  • Elbow And Forearm Injury
  • Elbow Pain
  • Emotional Disorders
  • Emphysema
  • Enlarged Lymph Nodes
  • Enthesopathies
  • Enthesopathy Of Lower Limb
  • Eustachian Tube Disorders
  • Eye And Adnexa Disorders
  • Eye And Orbit Injury
  • Eye Infections
  • Eyelid Disorders
  • Family History Of Malignant Neoplasm
  • Fatigue
  • Female Genital Pain
  • Fever
  • Fibromyalgia
  • Finger, Hand, And Wrist Open Wound
  • Foot Joint Pain
  • Fungal Otitis Externa
  • Gallstones
  • Gastritis
  • Gastroesophageal Reflux Disease (GERD) In Children
  • Genitourinary Symptoms
  • Gout
  • Head Injury
  • Headache
  • Heart Disease
  • Heart Murmur
  • Heartburn And Acid Reflux
  • Hematuria
  • Hemorrhagic Conditions
  • Hemorrhoids
  • Hemorrhoids And Perianal Venous Thrombosis
  • Herpes
  • Herpes (GENITAL HERPES)
  • High Blood Pressure
  • High Cholesterol
  • Hip And Thigh Open Wound
  • Hip And Thigh Tendon Injury
  • Hip Osteoarthritis
  • Hip Pain
  • Hives
  • Hordeolum And Chalazion
  • Hypertension
  • Hypertriglyceridemia
  • Hypertrophic Skin Disorders
  • Incontinence
  • Influenza
  • Influenza Due To Other Identified Influenza Virus
  • Ingrown Toenail
  • Insect Bites And Stings
  • Intervertebral Disc Disorders
  • Intestinal Infections
  • Irritable Bowel Syndrome
  • Joint Disorder
  • Joint Sprain
  • Kidney And Ureter Disorders
  • Kidney Stones
  • Knee And Leg Open Wound
  • Knee Joint And Ligament Sprain
  • Knee Pain
  • Lacrimal Gland Disorders
  • Laryngitis
  • Leg Pain
  • Liver Enzyme Abnormalities
  • Long Term Drug Therapy
  • Lower Back Pain
  • Lower Leg Injury
  • Malabsorption
  • Malaise And Fatigue
  • Male Genital Organ Disorders
  • Menstrual Cramps
  • Menstrual Disorders
  • Mesothelioma
  • Middle Ear Disorders
  • Migraine
  • Mononeuropathy Of Upper Limb
  • Mouth Sores
  • Multiple Sclerosis
  • Muscle Strain
  • Nail Disorders
  • Nasopharyngitis
  • Nausea
  • Neck Pain
  • Nervous And Musculoskeletal Symptoms
  • Newborn Feeding Problems
  • Nonscarring Hair Loss
  • Nonsuppurative Otitis Media
  • Obesity
  • Osteoarthritis
  • Osteoporosis
  • Otalgia And Ear Effusion
  • Overactive Bladder
  • Pain In Throat And Chest
  • Painful Urination
  • Palpitations
  • Penis Disorders
  • Personal History Of Diseases And Conditions
  • Pilar Cysts
  • Plantar Fasciitis
  • Plantar Warts
  • Pneumonia
  • Poison Ivy, Oak, Sumac
  • Polycystic Liver Disease
  • Polycystic Ovary Syndrome
  • Postnasal Drip
  • Premenstrual Syndrome (PMS)
  • Problems Related To Lifestyle
  • Proteinuria
  • Protozoal Diseases
  • Pruritus
  • Psoriasis
  • Rash
  • Raynaud's Disease
  • Reaction To Stress And Adjustment Disorders In Children
  • Rectal Pain
  • Respiratory Disorders
  • Rheumatoid Arthritis
  • Rhinitis
  • Scabies
  • Sciatica
  • Sedative Use Disorder
  • Shingles
  • Shoulder And Upper Arm Muscle, Fascia, And Tendon Injury
  • Shoulder And Upper Arm Tendon Injury
  • Shoulder Joint And Ligament Sprain
  • Shoulder Joint Pain
  • Sinus Infections
  • Skin And Soft Tissue Infections
  • Skin And Subcutaneous Tissue Disorders
  • Skin Changes
  • Skin Swelling And Lumps
  • Sleep Disorders
  • Soft Tissue Pain
  • Sore Throat
  • Spondylopathies
  • Sprain
  • Sprains And Strains
  • Staphylococcal Infection
  • Stomach Flu
  • Stomatitis And Related Lesions
  • Strep Throat
  • Stress
  • Superficial Abdomen Injury
  • Superficial Knee Injury
  • Superficial Mycoses
  • Syncope
  • Tachycardia
  • Tarsal Tunnel Syndrome
  • Tendinitis
  • Tendinous Disorders
  • Tennis Elbow
  • Testicular Pain
  • Throat Infection (TONSILLITIS)
  • Throat Pain
  • Thumb Synovitis
  • Thyroid Disorders
  • Tinnitus
  • Tuberculosis
  • Type 2 Diabetes
  • Type 2 Diabetes Mellitus
  • Urinary Tract Infection (UTI)
  • Urological Disorders
  • Urticaria
  • Uterine Fibroids
  • Vagina And Vulva Inflammation And Infections
  • Vaginal Infections
  • Vaginal Itching
  • Vaginitis
  • Varicose Veins Of Lower Extremities
  • Vasomotor And Allergic Rhinitis
  • Vertigo
  • Vestibular Disorders
  • Viral Diseases
  • Viral Warts
  • Vision Disturbances
  • Vitamin Deficiency
  • Vomiting
  • Vomiting And Nausea
  • Weight Loss
  • Wrist And Hand Joint And Ligament Dislocation And Sprain
  • Wrist And Hand Tendon Injury
  • Yeast Infection
  • Zoster
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Procedures I perform

  • Adhd Assessment
  • Advance Directive Planning
  • Allergen Immunotherapy
  • Anxiety Disorder Screening
  • Asthma Management
  • Back Pain Treatment
  • Biopsy Of Skin
  • Birth Control
  • Blood Pressure Monitoring
  • Body Mass Index (BMI) Evaluation
  • Breast Exam
  • Breathing Treatments
  • Cardiovascular Disease Screening
  • Cervical Biopsy
  • Cervix Dilation
  • Cholesterol Screening
  • Chronic Cough Treatment
  • Chronic Headache Treatment
  • Cold And Flu Treatment
  • Cold Treatment
  • Continuous Glucose Monitoring System
  • Contraceptive Device Insertion
  • Copd Management
  • Depression Treatment
  • Dermatological Care
  • Destruction Of Benign Lesions
  • Diabetes Foot Care
  • Diabetes Screening
  • Diet Counseling
  • Digital Rectal Exam
  • Disease Prevention Screenings
  • Distance Stereoacuity Test
  • Drug Testing
  • Durable Power Of Attorney Discussion
  • Ekg (ELECTROCARDIOGRAM)
  • EKG Interpretation
  • Electrocardiogram
  • Electrodesiccation And Curettage
  • Fertility Counseling
  • Flu Shot Administration
  • Food Allergy Treatment
  • Foreign Body Removal From Ear
  • Foreign Body Removal From Skin
  • Functional Abdominal Pain Treatment
  • Gastrointestinal Bacterial Infection Diagnosis
  • Gastrointestinal Evaluation
  • Gastrointestinal Therapy
  • Geriatric Care
  • Geriatric Health Screening
  • Geriatric Sleep Disorder Treatment
  • Glucose Control Management
  • Gynecological Examination
  • Health Maintenance Exam
  • Health Promotion Counseling
  • Hearing Testing
  • Helicobacter Pylori Stool Test
  • HIV Testing And Treatment
  • Hormone Replacement Therapy
  • Hospice Care Referral
  • Hypertension Treatment
  • Hypothyroidism Treatment
  • Immunization Administration
  • Impacted Earwax Removal
  • Infection Treatment
  • Injections For Pain Relief
  • Intrauterine Device
  • Labs And Blood Work
  • Mammogram Referral
  • Mental Health Medication Management
  • Mixed Venous Oxygen Saturation
  • Muscle Injection
  • Nebulizer Therapy
  • Nexplanon Placement And Removal
  • Nitrogen Washout Treatment
  • Occupational Therapy Evaluation
  • Oral And Pharyngeal Swallowing Function Evaluation
  • Osteoporosis Risk Assessment
  • Palliative Care Services
  • Pap Smear
  • Pediatric Autism Screening
  • Pediatric Sick Visit
  • Pesticide Poisoning Treatment
  • Physical Exams
  • Physical Performance Test
  • Physical Therapy Modalities
  • Physical Therapy Referral
  • Prostate Ultrasound
  • Psa Testing
  • Pulsatile Tinnitus Treatment
  • Reproductive Planning
  • Retinal Laceration Repair
  • Risk Assessment
  • Routine Check-Up
  • School Physicals
  • Sinus Infection Treatment
  • Sinusitis Treatment
  • Skin Allergy Testing
  • Skin Cancer Screening
  • Skin Tag Removal
  • Spirometry Test
  • Sports Physicals
  • Suture Removal
  • Swallowing Disorder Treatment
  • Tension Headache Treatment
  • Therapeutic Activities
  • Therapeutic Exercises
  • Tobacco Cessation
  • Travel Health
  • Tuberculosis Testing
  • Ulcerative Colitis-Associated Arthritis Treatment
  • Urinary Incontinence Treatment
  • Urinary Protein Test
  • Urinary Tract Infection (UTI) Treatment
  • Vaccinations
  • Venous Blood Collection
  • Viral Gastroenteritis Treatment
  • Vision Screening
  • Well Woman Exams
  • Wellness Exams
  • Wellness Services
  • Women's Health Exam
  • Wound Repair
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Practice locations

Distance from Change LocationEnter your Location

4151 Bladensburg Rd
Colmar Manor, MD, 20722

301-699-7700

Fax 301-779-9001

Get Directions

miles away

Fax 301-779-9001

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

Education

Board Certification: American Board of Family Medicine, Family Medicine

Residency: Georgetown University (1996)

Medical School: Temple University School Of Medicine (1993)

Ratings and reviews

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

    4.7
  • Extent to which the care provider listened to you

    4.8
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    4.7
  • Provider included you in decisions

    4.7
  • Concern the care provider showed for your questions or worries

    4.8
  • Likelihood of recommending this care provider to others

    4.7
  • Jan 9, 2026

    He always listens and try to help.

  • Jan 1, 2026

    Dr. Gallagher was very attentive, reassuring and provided clear instruction as how to proceed with my care.

  • Dec 18, 2025

    Amazing Doctor