Allison Liefeld Fillar, MD
Provider is directly employed by MedStar Health

4.9 out of 5 (723 reviews)

Specialities: Sports Medicine, Orthopedic Sports Medicine, Orthopedic Surgery

Languages: English

410-554-2084

About me

Allison Fillar, MD is fellowship trained and board-certified in orthopaedic surgery and sports medicine. She specializes in reconstructive knee and shoulder surgery.

Dr. Fillar has cared for professional, collegiate, and high school athletic teams in New York and Maryland.  She has conducted research on various topics including meniscal root injuries, patellar tendon repair techniques, treatment after Achilles tendon ruptures and has analyzed varying techniques for ACL reconstruction.

Dr. Fillar is a member of the American Academy of Orthopaedic Surgeons, the American Orthopaedic Society for Sports Medicine, and the Arthroscopy Association of North America.  She has been an invited instructor for arthroscopy courses at the American Academy of Orthopaedic Surgeons.  She teaches residents and fellows across the DC, Maryland and Virginia region. 

Dr. Fillar's focus is on helping patients get back to the activities they love. She believes in building relationships with patients over time and works in partnership with each person to evaluate treatment options.

Clinical areas of focus

  • Ankle Pain
  • Anterior Cruciate Ligament Injury
  • Cartilage Injury
  • Elbow Injury
  • Elbow Pain
  • Hip Labral Tear
  • Hip Pain
  • Knee Injury
  • Knee Pain
  • Meniscus Injury
  • Rotator Cuff Disorders
  • Shoulder Dislocation
  • Shoulder Instability
  • Shoulder Pain
  • Ulnar Collateral Ligament Repair
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Conditions and procedures

Conditions I treat

  • Achilles Tendon Injury
  • Achilles Tendon Tear
  • Achilles Tendonitis
  • Achilles Tendonosis
  • Acromioclavicular Fracture
  • Acromioclavicular Joint Separation
  • Adhesive Capsulitis
  • Ankle Fracture
  • Ankle Impingement
  • Ankle Injury
  • Ankle Instability
  • Ankle Pain
  • Ankle Sprain
  • Ankle Strain
  • Anterior Cruciate Ligament Injury
  • Anterior Tibialis Tendon Tear
  • Arm Fracture
  • Arm Injury
  • Arm Pain
  • Arthritis
  • Arthritis Of Knee
  • Athletic Pubalgia
  • Avascular Necrosis Of The Arm
  • Bicep Injury
  • Bicep Pain
  • Bicep Tear
  • Biceps Tendonitis
  • Bucket Handle Meniscus Tear
  • Bursitis
  • Bursitis Of The Elbow
  • Bursitis Subcutaneous Tendo Achilles
  • Calcific Tendonitis
  • Calf Muscle Injury
  • Calf Pain
  • Cartilage Injury
  • Chronic Exertional Compartment Syndrome
  • Chronic Muscle Injury
  • Clavicle Fracture
  • Comminuted Fracture
  • Compartment Syndrome
  • Compound Fracture
  • Dislocated Patella
  • Elbow Bone Spur
  • Elbow Dislocation
  • Elbow Injury
  • Elbow Pain
  • Epicondylitis
  • Femur Fracture
  • Fibula Fracture
  • Finger Sprain
  • Foot Injury
  • Foot Pain
  • Fracture
  • Gastrocnemius Injury
  • Gluteal Injury
  • Gluteus Medius Tear
  • Growth Plate Fracture
  • Hamstring Injury
  • Hip Abductor Tear
  • Hip Click
  • Hip Dislocation
  • Hip Impingement
  • Hip Injury
  • Hip Labral Tear
  • Hip Pain
  • Hip Pain Under Age 60
  • Hip Rotator Cuff Tear
  • Humerus Fracture
  • Hypothenar Hammer Syndrome
  • Insertional Tendonitis
  • Joint Dislocation
  • Jumpers Knee
  • Knee Clunk Syndrome
  • Knee Fracture
  • Knee Injury
  • Knee Instability
  • Knee Pain
  • Knee Pain For Patients Aged 60 And Older
  • Knee Pain For Patients Aged Younger Than 60
  • Lateral Collateral Ligament Tear
  • Lateral Epicondylitis
  • Leg Fracture
  • Leg Injury
  • Leg Pain
  • Ligament Injury
  • Ligament Tear
  • Locking Knee
  • Loose Body In The Knee
  • Medial Collateral Ligament Injury Of The Knee
  • Medial Epicondylitis
  • Meniscus Injury
  • Meniscus Tear
  • Multiple Ligament Knee Injury
  • Non Displaced Fracture
  • Nonunion Fracture
  • Nutrition And Supplement Issues
  • Occipital Neuralgia
  • Osgood Schlatter Disease
  • Osteochondral Defect
  • Overuse Injury
  • Overuse Injury Of The Ankle
  • Paratenonitis
  • Patella Dislocation
  • Patella Injury
  • Patellar Instability
  • Patellar Tendon Rupture
  • Patellofemoral Injury
  • Patellofemoral Syndrome
  • Pectoral Muscle Injury
  • Pectoralis Major Tendon Injury
  • Peroneal Tendon Tear
  • Peroneal Tendonitis
  • Persistent Pain After Orthopedic Surgery
  • Piriformis Syndrome
  • Plantar Fasciitis
  • Posterior Cruciate Ligament Pcl Tear
  • Posterior Tibial Tendon Tear
  • Posterolateral Corner Injury
  • Proximal Humerus Fractures
  • Quadrangular Space Syndrome
  • Quadricep Injury
  • Repetitive Stress Injury
  • Rotator Cuff Disorders
  • Rotator Cuff Impingement
  • Rotator Cuff Injury
  • Running Injury
  • Scapular Dyskinesis
  • Separated Shoulder
  • Sesamoiditis
  • Shin Splints
  • Shoulder Dislocation
  • Shoulder Impingement
  • Shoulder Injury
  • Shoulder Instability
  • Shoulder Pain
  • Shoulder Strain
  • Shoulder Tendonitis
  • Snapping Hip Syndrome
  • Soft Tissue Injury
  • Sports Related Ankle Injury
  • Sports Related Foot Injury
  • Sports Related Injury
  • Stress Fractures
  • Synovial Chondromatosis
  • Tendinitis Of The Hand
  • Tendinitis Of The Wrist
  • Tendinosis
  • Tendon Injury
  • Tenosynovitis
  • Throwing Injury
  • Tibia Fracture
  • Tibial Spine Fracture
  • Tibial Tendonitis
  • Toe Fracture
  • Tricep Injury
  • Trigger Finger
  • Twisted Ankle
  • Ulnar Fracture
  • Work Related Musculoskeletal Disorders
  • Wrist Dislocation
  • Wrist Pain
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Procedures I perform

  • Acromioclavicular Joint Repair
  • Anterior Cruciate Ligament Repair
  • Arthroscopy
  • Arthroscopy Of Knee
  • Arthroscopy Of Shoulder
  • Arthroscopy Of Wrist
  • Autologous Chondrocyte Implantation
  • Bone Grafting
  • Bone Morphogenetic Protein Bmp
  • Bone Reset
  • Bone Surgery
  • Closed Reduction And Manipulation
  • Computer Assisted Knee Replacement
  • Damaged Knee Cartilage Removal
  • Decompression Of Tarsal Tunnel
  • Elbow Injection
  • Elbow Surgery
  • Exertional Compartment Release
  • Fusion Of Joint
  • Hip Joint Injection
  • Hip Surgery
  • Joint Aspiration
  • Joint Injection
  • Joint Replacement
  • Joint Replacement And Reconstructive Surgery
  • Knee Surgery
  • Meniscal Surgery
  • Minimally Invasive Knee Replacement
  • Multiple Ligament Reconstruction
  • Nerve Block
  • Non Surgical Fracture Care
  • Non Surgical Management Of Osteoarthritis
  • Open Reduction Internal Fixation Orif Clavicle
  • Orthopedic Stem Cell Regeneration
  • Osteochondral Autograft
  • Pectoralis Major Tendon Tear Repair
  • Percutaneous Pinning
  • Peroneal Tendon Surgery
  • Platelet Rich Plasma Prp Injection
  • Platelet Rich Plasma Injection Prp Of The Elbow
  • Shin Splint Surgery
  • Shoulder Injection
  • Stem Cell Treatment For Joint Disease
  • Surgery For Arthritis
  • Tendon Repair Surgery
  • Total Hip Revision
  • Total Knee Replacement
  • Total Knee Replacement Age Greater Than 50
  • Total Knee Replacement Age Less Than 50
  • Total Shoulder Replacement Revision Surgery
  • Tricep Repair
  • Ulnar Collateral Ligament Repair
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Practice locations

Distance from Change LocationEnter your Location

3333 North Calvert Street
Johnston Professional Bldg Ste 400
Baltimore, MD, 21218

410-554-2155

Fax 410-554-2084

Get Directions

miles away

Fax 410-554-2084

2118 Greenspring Drive
Timonium, MD, 21093

410-554-2865

Fax 410-554-6423

Get Directions

miles away

Fax 410-554-6423

2 Loveton Circle
Sparks, MD, 21152

410-472-2672

Fax 410-472-2673

Get Directions

miles away

Fax 410-472-2673

Insurance

MedStar Medical Group accepts most major health insurance plans. If you are uncertain as to whether your individual health insurance plan is accepted at MedStar Medical Group, please call your insurance company.

  • List of insurance plans we accept
    • Aetna Elect Choice/ EPO (Aetna Health Fund) Innovation Health: Network Only Plus
    • Aetna Quality Point of Service (POS)
    • Aetna USAccess (POS)
    • Aetna Student Health Insurance
    • Aetna Medicare Advantage HMO & PPO Plans
    • CFBCBS BlueChoice HMO
    • CFBCBS Blue Choice Opt Out Plus Open Access (POS)
    • CFBCBS Maryland Point of Service Plan (MPOS)
    • CFBCBS Federal Employee Program (Std. & Basic PPO)
    • CFBCBS Maryland Indemnity or PPO
    • CFBCBS (NCA) Indemnity
    • CIGNA HMO & Network (HMO)
    • CIGNA POS/Network POS
    • Great-West Healthcare POS/CIGNA
    • CIGNA Indemnity
    • Coventry Health Care of Virginia
    • Coventry of Delaware HMO/PPO
    • First Health PPO
    • FIRST HEALTH
    • Tricare Prime
    • Tricare Standard
    • Tricare Extra (Indemnity)
    • Tricare for Life (Medicare Supplemental Plan)
    • MedStar Family Choice - Maryland Health Choice
    • MedStar Select (MedStar Associates' Plan)
    • MedStar Medicare Choice
    • United Healthcare Select HMO - EPO/NPP
    • United Healthcare Select Plus (POS)
    • United Healthcare Choice Plus
    • United Student Resources
    • M.D. IPA (HMO)
    • M.D. IPA Preferred (POS)
    • Optimum Choice Preferred (POS) & OCI Direct (HMO)
    • Mamsi Life & Health (Indem./PPO)
    • Aetna Worker's Compensation Network
    • Coventry Health Care National Network PPO
    • Private Health Care Systems (PHCS) (PPO)
    • United Healthcare Options (PPO) (includes Empire PPO, GEHA, Compass Rose)
    • OneNet PPO, Inc.
    • United Healthcare Choice
    • United Healthcare Core Essential (HMO)
    • Optimum Choice
    • United Healthcare Navigate
    • United Healthcare Compass (HMO)
    • CIGNA HMO Open Access (OA)
    • Network OA
    • POS OA & OA Plus
    • CIGNA EPO
    • PPO and PPO Plus
    • Choice Fund PPO
    • CFBSBC Blue Preferred PPO
    • HealthyBlue PPO
    • CFBCBS Blue Choice Opt Out Open Access
    • BlueChoice Open Access
    • Blue Choice Advantage & Healthy Blue (HMO, POS)
    • Aetna Traditional Choice (PPO)
    • Innovation Health: Indemnity
    • Aetna Open Choice (PPO)
    • Innovation Health: PPO
    • Aetna Managed Choice (POS)
    • Innovation Health: POS Plus
    • Aetna Elect Choice/ Open Access (POS)
    • Innovation Health: Open Network Only Plus
    • Aetna HMO-Open Access/Select OA/HealthFund/Health Network Option OA
    • Innovation Health: POS
    • Open HMO
    • Opoen HMO Option
    • Open EPO Plus
    • Aetna Managed Choice Open Access (POS)
    • Choice POS & Choice POS II
    • Innovation Health: Open POS Plus
    • Open POS II
    • Aetna HMO
    • Select HMO/HealthFund/Health Network
    • Aetna Innovations: HMO & EPO Plus

Education

Board Certification: American Board of Orthopaedic Surgery, Orthopaedic Surgery

Fellowship Program: MedStar Union Memorial Hospital (2015)

Residency Program: Montefiore Medical Center (2014)

Medical School: George Washington University School of Medicine (2009)

Ratings and reviews

  • Provider explained things understandably

    4.9
  • Provider listened carefully

    4.9
  • Provider gave easy to understand instructions

    4.8
  • Provider knew medical history

    4.8
  • Provider showed respect

    4.9
  • Provider spent enough time with patient

    4.9
  • Aug 24, 2021

    Very caring and kind.

  • Aug 17, 2021

    My experience couldn't have been any better.

  • Aug 16, 2021

    The care providers were informative and professional.