Christopher John Mays, MD| Internal Medicine | MedStar Health
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Christopher John Mays

Christopher John Mays, MD
Provider is directly employed by MedStar Health

5 out of 5 (2920 reviews)

Specialties: Internal Medicine

Languages: English

(301) 570-8536

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 Kidney Disease
  • Chronic Obstructive Pulmonary Disease (COPD)
  • Claudication
  • 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
  • Heart Murmur
  • Hematuria
  • Hemorrhagic Conditions
  • Hemorrhoids
  • Hepatitis
  • High Blood Pressure
  • High Cholesterol
  • Hip Pain
  • Hordeolum And Chalazion
  • Hyperglycemia
  • Hypertension
  • Hypertension Crisis
  • Hyperthyroidism
  • Hypertriglyceridemia
  • 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
  • Palpitations
  • 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
  • Syncope
  • 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
  • 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
  • Cold 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
  • Non-Pharmacological Interventions
  • Osteoporosis Prevention Treatment
  • Osteoporosis Risk Assessment
  • Pain Medication Management
  • Palliative Care Coordination
  • Pap Smear
  • Peak Flow Measurement
  • Pharmacogenomics
  • Pharmacological Therapy
  • Physical Exams
  • Pioglitazone Therapy
  • Pre-Operative Clearance
  • Preventive Action
  • Psa Testing
  • 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
  • Vision Screening
  • Wellness Exams
  • Wellness Services
  • Women's Health Exam
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Practice locations

Distance from Change LocationEnter your Location

18111 Prince Philip Dr
Ste 207
Olney, MD, 20832

301-570-8535

Fax 855-778-6918

Get Directions

miles away

Fax 855-778-6918

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

Education

Board Certification: American Board of Internal Medicine, Internal Medicine

Residency: Washington Hospital Center (1991)

Medical School: University of Maryland School of Medicine (1988)

Hospital affiliations

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

    5
  • Concern the care provider showed for your questions or worries

    5
  • Likelihood of recommending this care provider to others

    5
  • Apr 30, 2026

    Very good

  • Apr 28, 2026

    Dr. Mays is an exceptional PCP, and was very professional in his delivery of recommendations.

  • Apr 24, 2026

    Dr. Mays is an excellent doctor. Very knowledgeable, personable, and responsive to questions and concerns.