Warren O Ferris, MD| Rheumatology | MedStar Health
Share this profile Print this profile
Warren O Ferris

Warren O Ferris, MD
Provider is directly employed by MedStar Health

4.7 out of 5 (1235 reviews)

Specialties: Rheumatology

Languages: English

301-598-1569

About me

Dr. Ferris is board certified in rheumatology. He completed a fellowship in rheumatology at the University of Virginia.

Clinical areas of focus

  • Ankylosing Spondylitis
  • Bursopathy
  • Fibromyalgia
  • Osteoporosis
  • Rheumatoid Arthritis
  • Rheumatology Consultation
  • Rheumatology Treatment
  • Sjogrens Screening
  • Systemic Lupus Erythematosus Treatment
  • Tendinitis
  • Vasculitis Treatment
  • Vitiligo Treatment
Show More

Conditions and procedures

Conditions I treat

  • Acantholytic Disorders
  • Achilles Tendon Pain
  • Ankylosing Spondylitis
  • Artery Disorders
  • Arthritis
  • Autoinflammatory Syndrome
  • Axial Spondyloarthritis
  • Bleeding Disorders
  • Bone Density Disorder
  • Bursopathy
  • Cartilage Disorder
  • Chronic Gout
  • Chronic Gouty Arthritis
  • Connective Tissue Disorders
  • Deforming Dorsopathies
  • Dermatomyositis
  • Disorders Involving The Immune Mechanism
  • Elevated Erythrocyte Sedimentation Rate
  • Enteropathic Arthritis
  • Enteropathic Arthropathies
  • Enthesopathies
  • Enthesopathy Of Lower Limb
  • Episcleritis
  • Fibromyalgia
  • Flexor Tendonitis
  • Hemorrhagic Conditions
  • Immunodeficiencies
  • Inflammatory Myositis
  • Inflammatory Spondylopathies
  • Interstitial Lung Disease
  • Joint Derangement
  • Joint Derangement Of Knee
  • Joint Disorder
  • Knee Pain
  • Limb Deformity
  • Long Term Drug Therapy
  • Lower Leg Injury
  • Lupus Nephritis
  • Multiple Myeloma Of The Spine
  • Multiple Sclerosis
  • Necrotizing Vasculopathies
  • Nervous And Musculoskeletal Symptoms
  • Orbit Disorders
  • Osteoarthritis
  • Osteoarthritis Of First Carpometacarpal Joint
  • Osteoarthritis Of Hand Joints
  • Osteoarthritis Pain
  • Osteoporosis
  • Peripheral Vascular Diseases
  • Personal History Of Diseases And Conditions
  • Plantar Fasciitis
  • Polyosteoarthritis
  • Psoriasis
  • Retinal Disease
  • Rheumatic Fever With Heart Involvement
  • Rheumatoid Arthritis
  • Rheumatoid Arthritis With Rheumatoid Factor
  • Scleroderma
  • Septic Arthritis Of The Hip
  • Shoulder Disorder
  • Sjogren's Syndrome
  • Skin And Subcutaneous Tissue Disorders
  • Skin Changes
  • Spondylopathies
  • Spondylosis
  • Systemic Connective Tissue Involvement
  • Systemic Lupus Erythematosus
  • Tendinitis
  • Thumb Synovitis
  • Vasculitis Of Skin
Show All Show Less

Procedures I perform

  • Antinuclear Antibody (ANA) Test
  • Anxiety Management
  • Arthrocentesis
  • Balance And Coordination Training
  • Bone Density Testing
  • Bursitis Treatment
  • Cervical Epidural Steroid Injection
  • C-Reactive Protein (CRP) Test
  • Dupuytren Contracture Treatment
  • Electrical Nerve Stimulation
  • Erythrocyte Sedimentation Rate
  • Fatigue Management
  • Ganglion Cyst Treatment
  • Geriatric Sleep Disorder Treatment
  • Hand Therapy
  • Lifestyle Counseling
  • Mep (MOTOR EVOKED POTENTIALS)
  • Muscle Biopsy
  • Muscle Injection
  • Musculoskeletal Ultrasound
  • Nutrition Counseling
  • Occupational Therapy Evaluation
  • Orthopedic Physical Therapy
  • Osteoporosis Risk Assessment
  • Pain Medication Management
  • Paraffin Wax Bath
  • Physical Therapy Modalities
  • Rheumatology Consultation
  • Rheumatology Treatment
  • Sjogrens Screening
  • Stem Cell Therapy
  • Synthetic Pathology
  • Systemic Lupus Erythematosus Treatment
  • Tendonitis Treatment
  • Tension Headache Treatment
  • Therapeutic Activities
  • Therapeutic Exercises
  • Tissue Transglutaminase Antibody Test
  • Trigger Point Injection
  • Ultrasound-Guided Cyst Aspiration
  • Vasculitis Treatment
  • Vasopneumatic Devices
  • Visian Icl
  • Vitiligo Treatment
  • Weight Management Program
Show All button Press enter to expand Show Less

Practice locations

Distance from Change LocationEnter your Location

3305 N Leisure World Blvd
Silver Spring, MD, 20906

301-598-1590

Fax 301-598-1569

Get Directions

miles away

Fax 301-598-1569

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

Education

Board Certification: American Board of Internal Medicine, Rheumatology

Board Certification: American Board of Internal Medicine, Internal Medicine

Fellowship Program: University of Virginia Medical Center (1983)

Fellowship Program: National Heart Lung & Blood Institute (1982)

Residency Program: MedStar Georgetown University Hospital (1979)

Residency Program: New York Hospital - Cornell Medical Center (1978)

Internship Program: New York Hospital - Cornell Medical Center (1977)

Medical School: Columbia University (1976)

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

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

    4.7
  • Provider included you in decisions

    4.6
  • Concern the care provider showed for your questions or worries

    4.8
  • Likelihood of recommending this care provider to others

    4.6
  • Apr 29, 2026

    Everything was good

  • Mar 11, 2026

    Dr Ferris is a terrific doctor. He is caring gives very helpful advice on taking care of my ailment.

  • Mar 10, 2026

    Dr. Warren is excelent. Friendly, caring, responsive, yet respextful. Very practical to the point suggesrions for my well I would reconmend Dr. Warren to eveybody.