Mary Jane M. Reen, MD| Pediatrics, Pediatric Hospital Medicine | MedStar Health
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Mary Jane M. Reen

Mary Jane M. Reen, MD
Provider is directly employed by MedStar Health

4.9 out of 5 (191 reviews)

Specialties: Pediatrics, Pediatric Hospital Medicine

Languages: English

Clinical areas of focus

  • Chronic Cough Treatment
  • Chronic Headache Treatment
  • Ear Infection Treatment
  • Gastroesophageal Reflux Disease
  • Geriatric Sleep Disorder Treatment
  • Mental Health Support During Pregnancy
  • Milk Allergy Treatment
  • Newborn Feeding Problems
  • Newborn Feeding Support
  • Sleep Disorders
  • Vision Screening
  • Wellness Exams
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Conditions and procedures

Conditions I treat

  • Abdomen, Lower Back, Pelvis, And Genital Injury
  • Abdominal Pain
  • Abnormal Breathing
  • Abnormal Drug Findings In Blood
  • Abnormal Function Study Results
  • Abnormal Movements
  • Acne
  • Acute Laryngitis And Tracheitis
  • Acute Sinusitis
  • Adult And Child Abuse, Neglect And Maltreatment
  • Adverse Effects
  • Allergic Contact Dermatitis
  • Allergy Status To Drugs And Substances
  • Ankle And Foot Injury
  • Appearance And Behavior Symptoms
  • Artificial Openings Complications
  • Asthma
  • Bacterial Agents
  • Bacterial Pneumonia
  • Birth Defects Due To Maternal Conditions
  • Bone Disorders
  • Bronchiolitis
  • Candidiasis
  • Child Speech Disorders
  • Chronic Diseases Of Tonsils And Adenoids
  • Cleft Lip And Palate
  • Cognitive Function Disorders
  • Complications Of Infusion, Transfusion And Injection
  • Conditions Of Integument Specific To Newborn
  • Congenital Anomalies
  • Congenital Anomalies Of The Kidney
  • Congenital Deformities Of Hip
  • Congenital Infectious And Parasitic Diseases
  • Congenital Malformation Syndromes Affecting Multiple Systems
  • Congenital Malformations Of Ear
  • Congenital Malformations Of Eyelid, Lacrimal Apparatus And Orbit
  • Congenital Malformations Of Face And Neck
  • Congenital Malformations Of Gallbladder, Bile Ducts And Liver
  • Congenital Malformations Of Intestine
  • Congenital Malformations Of Larynx
  • Congenital Malformations Of Male Genital Organs
  • Congenital Malformations Of Pharynx
  • Congenital Malformations Of Skin
  • Congenital Malformations Of Skull And Face Bones
  • Congenital Malformations Of Trachea And Bronchus
  • Congenital Malformations Of Urinary System
  • Congenital Musculoskeletal Deformities Of Head, Face, Spine And Chest
  • Congenital Obstructive Defects Of Renal Pelvis
  • Contact With Communicable Diseases
  • Convulsions
  • Cradle Cap (SEBORRHEIC DERMATITIS)
  • Crohn's Disease [Regional Enteritis]
  • Dermatitis Due To Substances
  • Dermatophytosis (RINGWORM)
  • Developmental Delays
  • Disorders Of Carbohydrate Metabolism
  • Disorders Of Puberty
  • Disorders Of Tooth Development And Eruption
  • Disturbances Of Cerebral Status Of Newborn
  • Eating Disorders
  • Eccrine Sweat Disorders
  • Eczema (ATOPIC DERMATITIS)
  • Emotional Disorders
  • Emotional State Symptoms
  • Epilepsy And Seizures
  • Erythematous Conditions
  • Eyelid Disorders
  • Family History Of Disabilities And Chronic Diseases
  • Feeding Problems In Newborns
  • Fever
  • Fungal Infections
  • Fungal Otitis Externa
  • General Symptoms
  • Genitourinary Symptoms
  • Hand And Wrist Fracture
  • Head Injury
  • Hemangioma
  • Hereditary Hemolytic Anemias
  • Herpes
  • Hydrocephalus
  • Hypothermia Of Newborn
  • Immunization Not Carried Out And Underimmunization Status
  • Impetigo
  • Intestinal Infections
  • Joint Disorder
  • Knee And Leg Open Wound
  • Lacrimal Gland Disorders
  • Limb Deformity
  • Lower Leg And Ankle Fracture
  • Lower Leg Injury
  • Menstrual Disorders
  • Mesothelioma
  • Middle Ear Disorders
  • Migraine
  • Nasopharyngitis
  • Nervous And Musculoskeletal Symptoms
  • Neutropenia
  • Newborn Affected By Complications Of Placenta, Cord And Membranes
  • Newborn Complications From Labor And Delivery
  • Newborn Feeding Problems
  • Newborn Hypoglycemia
  • Noninfective Gastroenteritis
  • Nonsuppurative Otitis Media
  • Obstructive And Reflux Uropathy
  • Paralytic Strabismus
  • Penis Disorders
  • Perinatal Digestive System Disorders
  • Personal History Of Diseases And Conditions
  • Personal Risk Factors
  • Persons Encountering Health Services
  • Pervasive Developmental Disorder
  • Phakomatoses
  • Problems Related To Education And Literacy
  • Problems Related To Lifestyle
  • Problems Related To Primary Support Group
  • Protozoal Diseases
  • Pulmonary Heart Disease
  • Relapsing Fevers
  • Respiratory Conditions
  • Respiratory Failure In Newborn
  • Scarlet Fever
  • Scholastic Skills Disorder
  • Scoliosis
  • Shoulder Fracture
  • Sickle
  • Skin Thickening
  • Sleep Disorders
  • Spinal Osteochondrosis
  • Subclinical Hypothyroidism
  • Syncope
  • Thalassemia
  • Urological Disorders
  • Viral Infection
  • Vision Disturbances
  • Vomiting And Nausea
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Procedures I perform

  • Absence Management
  • Acute Illness Treatment
  • Adhd Assessment
  • Adoption Evaluation
  • Adult Day Care Evaluation
  • Asthma Management
  • Balance And Coordination Training
  • Binge Eating Disorder Treatment
  • Body Mass Index (BMI) Evaluation
  • Bone Health Evaluation
  • Breastfeeding Assistance
  • Cardiovascular Health Promotion
  • Cerebral Palsy Management
  • Child Care
  • Child Custody Evaluation
  • Chronic Cough Treatment
  • Chronic Headache Treatment
  • Cognitive Development Evaluation
  • Community Health Education
  • Counseling For Mental Health
  • Daycare Physical
  • Disease Prevention Education
  • Down Syndrome Treatment
  • Ear Infection Treatment
  • Electrocardiogram
  • Endocrinology Care
  • Gastroesophageal Reflux Disease
  • Geriatric Sleep Disorder Treatment
  • Health Promotion Counseling
  • Holter Monitoring
  • Immunization Administration
  • Injury Treatment
  • Lactation Consultation
  • Learning Disability Evaluation
  • Long Leg Splint Application
  • Low Vision Therapy
  • Mental Health Assessment
  • Mental Health Medication Management
  • Mental Health Support During Pregnancy
  • Milk Allergy Treatment
  • Mole Removal
  • Nebulizer Therapy
  • Neonatal Circumcision
  • Neurodevelopmental Disorder Evaluation
  • Newborn Care
  • Newborn Feeding Support
  • Newborn Initial Hospital Care
  • Newborn Screening Tests
  • Orthopedic Physical Therapy
  • Orthotic Device Fitting
  • Orthotics Fitting
  • Pain Medication Management
  • Pancreatic Disease Management
  • Pediatric Autism Screening
  • Pediatric Sick Visit
  • Pink Eye (CONJUNCTIVITIS) Treatment
  • Poison Prevention
  • Prenatal Lactation Education
  • Pulmonary Function Tests
  • Safety And Injury Prevention Counseling
  • School Physical
  • Skin Allergy Testing
  • Speech Audiometry With Tympanometry
  • Speech Therapy
  • Sports Physicals
  • Staple Removal
  • Substance Abuse Education
  • Suture Removal
  • Swallowing Disorder Treatment
  • Therapeutic Activities
  • Therapeutic Exercises
  • Toddler Care
  • Traction Application
  • Travel Health Consultation
  • Trichiasis Treatment
  • Urinary Tract Infection (UTI) Treatment
  • Vaccinations
  • Vision Screening
  • Weight Management Program
  • Wellness Exams
  • Wheelchair Evaluation
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Practice locations

Distance from Change Location Enter your Location

26840 Point Lookout Rd
Ste 5 & 6
Leonardtown, MD, 20650

301-475-4610
Get Directions

miles away

Fax 301-475-4611

4200 Wisconsin Ave NW
Ste 400
Washington, DC, 20016

202-243-3400
Get Directions

miles away

Fax 202-243-3434

Insurance

This list represents the major payors accepted by MedStar Health.

NOTE: Payor contracts change and not all plans associated with a payor may be covered. Payors may offer multiple plans. If you have a question related to your insurance, please contact your insurance plan directly. Contact information is located on your health insurance ID card.

*Denotes limited participation. Specific providers and practices may NOT be participating. Please contact your insurance plan directly.

  • List of insurance plans we accept
    • Aetna
    • CareFirst BlueCross BlueShield of Maryland
    • Cigna Health Care
    • Kaiser Permanente*
    • MedStar Select (Administered by CareFirst)
    • United HealthCare
    • Aetna
    • CareFirst BlueCross BlueShield of Maryland
    • Healthspring
    • Humana
    • Medicare & Railroad Medicare
    • United HealthCare
    • Aetna Better Health of Maryland *
    • Medical Assistance/Medicaid
    • MedStar Family Choice MD
    • Priority Partners *
    • United HealthCare Community Health Plan MD
    • Wellpoint MD
    • AmeriHealth Caritas
    • Health Services For Children With Special Needs (HSCSN)
    • Medical Assistance/Medicaid
    • MedStar Family Choice DC
    • Johns Hopkins Employer Health Programs *
    • Johns Hopkins US Family Health Plan *
    • MultiPlan
    • Private Healthcare Systems
    • Tricare/Humana Military
    • VA Community Care Network (VACCN)

Education

Board Certification: American Board of Pediatrics, General Pediatrics

Residency: MedStar Georgetown University Medical Center (2019)

Residency: MedStar Georgetown University Medical Center (2018)

Medical School: Georgetown University School of Medicine (2015)

Ratings and reviews

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

    5
  • Extent to which the care provider listened to you

    5
  • Care provider’s discussion of any proposed treatment (options, risks, benefits, etc.)

    5
  • Provider included you in decisions

    4.9
  • Concern the care provider showed for your questions or worries

    5
  • Likelihood of recommending this care provider to others

    5
  • May 1, 2026

    Again, Dr. Reen is invaluable and we adore her as our children's doctor. She's so kind and understanding, supportive, and thorough. She's the best!

  • Aug 19, 2025

    Dr. Reen was very reassuring and thorough.

  • Jun 20, 2025

    Outstanding provider. Listened and empathized with my child exceptionally well established repoire while giving the best possible up-to-date recommendations. A rare gem of a Health at Every Size provider.