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Dr. Gregory Tennant, DO

Lancaster, CA

20 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Tennant, Orthopedic Surgeon in Lancaster, CA?

    Dr. Gregory Tennant, DO is an Orthopedic Surgeon, who primarily practices in Lancaster, CA with 2 additional practice locations. He has been practicing for over 20 years. Dr. Tennant is fluent in English, and is currently seeing new patients. Dr. Tennant’s practice accepts Kaiser Permanente, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Tennant’s office at (909) 427-5000.

    Where did Dr. Tennant go to medical school and complete their residency?

    • Medical School: Nova Southeastern College Of Osteopathic Medicine

    What languages does Dr. Tennant speak?

    Dr. Tennant and their clinical team can communicate with patients in the following languages:

    • English

    What conditions does Dr. Tennant treat?

    As an Orthopedic Surgeon, Dr. Tennant diagnoses, treats, and manages a wide range of conditions. This condition information is derived from anonymized insurance claims and highlights the medical conditions most commonly treated by Dr. Tennant. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.

    Also known as:

    • Primary Osteoarthritis in Right Knee
    • Osteoarthritis of the left knee
    • Osteoarthritis of the right shoulder
    • Osteoarthritis of the left shoulder
    • Osteoarthritis of both knees
    • Osteoarthritis of the left hip
    • Primary Osteoarthritis in Right Hip
    • Osteoarthritis
    • Right Knee Arthritis
    • Right Knee Degenerative Joint Disease
    • Degenerative joint disease
    • Wear-and-tear arthritis
    • Arthrosis
    • Joint degeneration
    • Right Hip Arthritis
    • Right Hip Degenerative Joint Disease

    ICD-10 Codes:

    • M1711: Unilateral primary osteoarthritis, right knee
    • M1712: Unilateral primary osteoarthritis, left knee
    • M19011: Primary osteoarthritis, right shoulder
    • M19012: Primary osteoarthritis, left shoulder
    • M170: Bilateral primary osteoarthritis of knee
    • M1612: Unilateral primary osteoarthritis, left hip
    • M1611: Unilateral primary osteoarthritis, right hip

    Also known as:

    • Right Carpal Tunnel Syndrome
    • Carpal Tunnel Syndrome
    • Left Carpal Tunnel Syndrome
    • Right Wrist Nerve Compression
    • Right Hand Numbness
    • Right CTS
    • Median Nerve Compression
    • Wrist Nerve Entrapment
    • Left Wrist Nerve Compression
    • Left Hand Numbness
    • Left CTS

    ICD-10 Codes:

    • G5601: Carpal tunnel syndrome, right upper limb
    • G5603: Carpal tunnel syndrome, bilateral upper limbs
    • G5602: Carpal tunnel syndrome, left upper limb

    What procedures does Dr. Tennant perform?

    As an Orthopedic Surgeon, Dr. Tennant performs a variety of medical procedures. This procedure information is derived from anonymized insurance claims and highlights the medical procedures most commonly performed by Dr. Tennant. It provides insight into the doctor’s areas of experience and expertise based on real-world patient encounters from the past two years, updated quarterly.

    Also known as:

    • Major Joint Injection or Fluid Removal with Ultrasound
    • Joint or Bursa Injection/Fluid Removal
    • Ultrasound-Guided Joint or Bursa Injection/Aspiration
    • Ultrasound-Guided Arthrocentesis
    • Shoulder Injection with Ultrasound
    • Hip Aspiration with Ultrasound
    • Knee Injection with Ultrasound
    • Arthrocentesis
    • Major Joint Aspiration
    • Bursa Injection
    • Joint Fluid Removal
    • Intermediate Joint Aspiration with Ultrasound
    • Bursa Injection with Ultrasound

    CPT Codes:

    • 20611: Arthrocentesis, aspiration and/or injection, major joint or bursa (eg, shoulder, hip, knee, subacromial bursa); with ultrasound guidance, with permanent recording and reporting
    • 20610: Arthrocentesis, aspiration and/or injection, major joint or bursa (eg, shoulder, hip, knee, subacromial bursa); without ultrasound guidance
    • 20606: Arthrocentesis, aspiration and/or injection, intermediate joint or bursa (eg, temporomandibular, acromioclavicular, wrist, elbow or ankle, olecranon bursa); with ultrasound guidance, with permanent recording and reporting

    Also known as:

    • Wrist Fracture Treatment with Manipulation
    • Non-Surgical Wrist Fracture Treatment
    • Hand Bone Fracture Treatment with Manipulation
    • Non-Surgical Finger or Thumb Fracture Treatment
    • Foot Bone Fracture Treatment (No Manipulation)
    • Collarbone Fracture Treatment (No Manipulation)
    • Upper Arm Bone Fracture Treatment (No Manipulation)
    • Non-Surgical Radial Head Fracture Treatment
    • Closed Distal Radius Fracture Treatment
    • Colles Fracture Reduction
    • Smith Fracture Treatment
    • Closed Distal Radial Fracture Treatment
    • Colles Fracture Treatment
    • Ulnar Styloid Fracture Treatment
    • Metacarpal Fracture Reduction
    • Closed Metacarpal Fracture Treatment
    • Broken Hand Bone Manipulation
    • Closed Distal Phalangeal Fracture Treatment
    • Broken Finger Tip Treatment
    • Thumb Fracture Care without Manipulation
    • Phalangeal Fracture Non-Surgical
    • Metatarsal Fracture Care
    • Non-Surgical Foot Fracture Treatment
    • Closed Metatarsal Fracture Reduction
    • Closed Clavicle Fracture Treatment
    • Non-Surgical Collarbone Repair
    • Clavicle Fracture Management
    • Proximal Humerus Fracture Care
    • Shoulder Fracture Treatment
    • Closed Humeral Fracture Management
    • Arm Bone Break Treatment
    • Closed Radial Head Fracture Treatment
    • Radial Neck Fracture Care
    • Elbow Fracture Treatment without Manipulation
    • Forearm Bone Fracture Treatment

    CPT Codes:

    • 25605: Closed Treatment Of Distal Radial Fracture (Eg, Colles Or Smith Type) Or Epiphyseal Separation, Includes Closed Treatment Of Fracture Of Ulnar Styloid, When Performed; With Manipulation
    • 25600: Closed Treatment Of Distal Radial Fracture (Eg, Colles Or Smith Type) Or Epiphyseal Separation, Includes Closed Treatment Of Fracture Of Ulnar Styloid, When Performed; Without Manipulation
    • 26605: Closed treatment of metacarpal fracture, single; with manipulation, each bone
    • 26750: Closed treatment of distal phalangeal fracture, finger or thumb; without manipulation, each
    • 28470: Closed treatment of metatarsal fracture; without manipulation, each
    • 23500: Closed treatment of clavicular fracture; without manipulation
    • 23600: Closed treatment of proximal humeral (surgical or anatomical neck) fracture; without manipulation
    • 24650: Closed treatment of radial head or neck fracture; without manipulation

    Also known as:

    • Carpal Tunnel Injection
    • Tendon or Ligament Pain Injection
    • Corticosteroid injection for carpal tunnel
    • Local anesthetic for carpal tunnel
    • Wrist pain injection
    • Carpal tunnel syndrome injection
    • Tendon Injection
    • Ligament Injection
    • Soft Tissue Injection
    • Pain Relief Injection (Tendon/Ligament)

    CPT Codes:

    • 20526: Injection, therapeutic (eg, local anesthetic, corticosteroid), carpal tunnel
    • 20551: Injection(s); single tendon origin/insertion

    Also known as:

    • Injection for Tendon or Ligament Pain
    • Tendon sheath injection
    • Ligament injection
    • Plantar fascia injection
    • Soft tissue injection for pain

    CPT Codes:

    • 20550: Injection(s); single tendon sheath, or ligament, aponeurosis (eg, plantar "fascia")

    Also known as:

    • Knee Arthroscopy with Meniscus and Cartilage Repair
    • Endoscopy
    • Knee Scope with Meniscectomy
    • Knee Cartilage Shaving
    • Arthroscopic Knee Debridement
    • Knee scope with meniscectomy
    • Arthroscopic knee surgery
    • Cartilage shaving knee
    • Meniscus repair knee arthroscopy

    CPT Codes:

    • 29881: Arthroscopy, knee, surgical; with meniscectomy (medial OR lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty), same or separate compartment(s), when performed
    • 29880: Arthroscopy, knee, surgical; with meniscectomy (medial AND lateral, including any meniscal shaving) including debridement/shaving of articular cartilage (chondroplasty), same or separate compartment(s), when performed

    Also known as:

    • Small Joint or Bursa Injection with Ultrasound
    • Ultrasound-Guided Joint Aspiration
    • Finger Joint Injection
    • Toe Joint Injection
    • Bursa Injection with Ultrasound

    CPT Codes:

    • 20604: Arthrocentesis, aspiration and/or injection, small joint or bursa (eg, fingers, toes); with ultrasound guidance, with permanent recording and reporting

    Also known as:

    • Finger or Palm Tendon Sheath Removal
    • Flexor Tenosynovectomy
    • Tendon Sheath Excision (Hand)
    • Radical Synovectomy of Tendon

    CPT Codes:

    • 26145: Synovectomy, tendon sheath, radical (tenosynovectomy), flexor tendon, palm and/or finger, each tendon

    Also known as:

    • Total Knee Replacement
    • Knee Replacement
    • Total Knee Arthroplasty
    • Knee Joint Replacement
    • Full Knee Replacement
    • TKA Surgery

    CPT Codes:

    • 27447: Arthroplasty, knee, condyle and plateau; medial AND lateral compartments with or without patella resurfacing (total knee arthroplasty)

    Also known as:

    • Non-Surgical Treatment for Broken Hand Bone
    • Closed Metacarpal Fracture Treatment
    • Hand Bone Fracture Care
    • Metacarpal Fracture Management without Manipulation

    CPT Codes:

    • 26600: Closed treatment of metacarpal fracture, single; without manipulation, each bone

    Also known as:

    • Open Surgery for Complex Wrist Fracture
    • Distal Radius Fracture Repair (Open)
    • Wrist Fracture with Internal Fixation
    • Complex Radial Fracture Surgery
    • Epiphyseal Separation Repair (Wrist)

    CPT Codes:

    • 25609: Open treatment of distal radial intra-articular fracture or epiphyseal separation; with internal fixation of 3 or more fragments

    Also known as:

    • Removal of Deep Surgical Implant
    • Hardware Removal Surgery
    • Buried Implant Extraction
    • Orthopedic Implant Removal

    CPT Codes:

    • 20680: Removal of implant; deep (eg, buried wire, pin, screw, metal band, nail, rod or plate)

    Also known as:

    • Palm Tendon Transfer
    • Palmar Tendon Transplant
    • Hand Tendon Repositioning
    • Tendon Transfer in Hand

    CPT Codes:

    • 26485: Transfer or transplant of tendon, palmar; without free tendon graft, each tendon

    Also known as:

    • Wrist Ganglion Cyst Removal
    • Trigger Finger Release Surgery
    • Ganglion Excision
    • Wrist Cyst Surgery
    • Dorsal/Volar Ganglion Removal
    • Tendon Sheath Incision
    • Trigger Finger Tenolysis
    • Finger Tendon Release
    • Hand Tendon Surgery

    CPT Codes:

    • 25111: Excision of ganglion, wrist (dorsal or volar); primary
    • 26055: Tendon sheath incision (eg, for trigger finger)

    Also known as:

    • Closed Treatment of Finger or Thumb Fracture
    • Phalangeal fracture treatment
    • Broken finger treatment
    • Thumb fracture care

    CPT Codes:

    • 26720: Closed treatment of phalangeal shaft fracture, proximal or middle phalanx, finger or thumb; without manipulation, each

    Also known as:

    • Short Arm Cast Application
    • Elbow to Finger Cast
    • Forearm Cast
    • Arm Immobilization Cast

    CPT Codes:

    • 29075: Application, cast; elbow to finger (short arm)

    Also known as:

    • Open Repair of Distal Radius Fracture with Internal Fixation
    • Wrist Fracture Surgery
    • Radial Bone Fracture Repair
    • Distal Radius Fixation

    CPT Codes:

    • 25607: Open Treatment Of Distal Radial Extra-Articular Fracture Or Epiphyseal Separation, With Internal Fixation

    Also known as:

    • Elbow Tendon Release for Tennis or Golfer's Elbow
    • Percutaneous Tenotomy Elbow', 'Tennis Elbow Surgery', 'Golfer's Elbow Surgery
    • Elbow Tendon Repair

    CPT Codes:

    • 24357: Tenotomy, elbow, lateral or medial (eg, epicondylitis, tennis elbow, golfer's elbow); percutaneous

    Also known as:

    • Total Hip Replacement
    • Hip Replacement
    • Hip arthroplasty
    • Artificial hip surgery
    • Hip joint replacement
    • Femoral head replacement

    CPT Codes:

    • 27130: Arthroplasty, acetabular and proximal femoral prosthetic replacement (total hip arthroplasty), with or without autograft or allograft

    Also known as:

    • Removal of External Fixator
    • Anesthesia
    • External Fixation Device Removal
    • Bone Fixator Removal
    • Hardware Removal Surgery
    • External Frame Removal

    CPT Codes:

    • 20694: Removal, under anesthesia, of external fixation system

    Also known as:

    • Wrist or Forearm Tendon Sheath Removal (Flexor Side)
    • Flexor Tenosynovectomy
    • Wrist Synovial Excision
    • Forearm Tendon Sheath Excision

    CPT Codes:

    • 25115: Radical excision of bursa, synovia of wrist, or forearm tendon sheaths (eg, tenosynovitis, fungus, Tbc, or other granulomas, rheumatoid arthritis); flexors

    Also known as:

    • Closed Fibula Fracture Treatment
    • Lateral Malleolus Fracture Treatment
    • Distal Fibula Fracture Care
    • Ankle Bone Fracture Treatment

    CPT Codes:

    • 27786: Closed treatment of distal fibular fracture (lateral malleolus); without manipulation

    Also known as:

    • Open Repair of Hand Bone Fracture (Metacarpal)
    • Metacarpal Fracture Surgery
    • Hand Fracture Fixation
    • Broken Hand Bone Surgery
    • Metacarpal Open Reduction Internal Fixation (ORIF)

    CPT Codes:

    • 26615: Open treatment of metacarpal fracture, single, includes internal fixation, when performed, each bone

    Also known as:

    • Short Leg Cast Application
    • Below Knee Cast
    • Lower Leg Cast
    • Foot and Ankle Cast

    CPT Codes:

    • 29405: Application of short leg cast (below knee to toes);

    Also known as:

    • Tendon Release Surgery for Hand or Finger
    • Extensor tenolysis
    • Tendon freeing surgery
    • Hand tendon surgery

    CPT Codes:

    • 26445: Tenolysis, extensor tendon, hand OR finger, each tendon

    Also known as:

    • Open Repair of Broken Collarbone
    • Clavicle Fracture Surgery
    • Collarbone Fixation
    • Open Clavicle Reduction

    CPT Codes:

    • 23515: Open treatment of clavicular fracture, includes internal fixation, when performed

    Also known as:

    • Open Repair of Trimalleolar Ankle Fracture
    • Trimalleolar Ankle Fracture Surgery
    • Ankle Fracture Fixation
    • Open Ankle Fracture Reduction
    • Broken Ankle Surgery

    CPT Codes:

    • 27822: Open treatment of trimalleolar ankle fracture, includes internal fixation, when performed, medial and/or lateral malleolus; without fixation of posterior lip

    Also known as:

    • Carpal Tunnel Release Surgery
    • Median Nerve Neuroplasty
    • Carpal Tunnel Decompression
    • Median Nerve Transposition

    CPT Codes:

    • 64721: Neuroplasty and/or transposition; median nerve at carpal tunnel

    Also known as:

    • Nerve Release Surgery (Microscope)
    • Ulnar Nerve Release or Repositioning at Elbow
    • Internal Neurolysis
    • Microscopic Nerve Release
    • Nerve Decompression Surgery
    • Ulnar Nerve Transposition
    • Cubital Tunnel Release
    • Elbow Nerve Surgery
    • Neuroplasty Ulnar Nerve

    CPT Codes:

    • 64727: Internal neurolysis, requiring use of operating microscope (List separately in addition to code for neuroplasty) (Neuroplasty includes external neurolysis)
    • 64718: Neuroplasty and/or transposition; ulnar nerve at elbow

    Also known as:

    • Bone Debridement (Cleaning of Bone Wound)
    • Bone Wound Cleaning
    • Surgical Bone Debridement
    • Dead Bone Removal
    • Wound Cleaning with Bone Involvement

    CPT Codes:

    • 11044: Debridement, bone (includes epidermis, dermis, subcutaneous tissue, muscle and/or fascia, if performed); first 20 sq cm or less

    Does Dr. Tennant accept my insurance?

    Dr. Tennant accepts most major insurance plans. Important: Please call our office at (909) 427-5000 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Tennant accept in Lancaster, CA?

    Dr. Tennant in Lancaster, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Alignment Health Plan

    • All Other Third Party

    • Centene

    • City of Los Angeles

    • Crown Cork and Seal Company

    • CVS Health (formerly Aetna)

    • Humana

    • Medicare

    • Other Health Care Provider

    • UnitedHealthcare

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    Where is Dr. Tennant's office located?

    Dr. Gregory Tennant's Primary Practice

    42135 10th St W Ste 101

    Lancaster, CA 93534

    (909) 427-5000

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    Dr. Gregory Tennant's Practice 2

    9961 Sierra Ave

    Fontana, CA 92335

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    Dr. Gregory Tennant's Practice 3

    23838 Valencia Blvd Ste 260

    Santa Clarita, CA 91355

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    What is Dr. Tennant's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Tennant's National Provider Identifier (NPI) number is 1073581385.

    What common questions do patients ask about Dr. Tennant?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Tennant

    What is Dr. Gregory Tennant's specialty?

    Dr. Tennant is a Orthopedic Surgeon near Lancaster, CA. An orthopedic surgeon has specialization in preserving, investigating, and restoring the form and function of the extremities, spine, and related structures through medical, surgical, and physical methods. They care for patients with musculoskeletal issues, including congenital deformities, trauma, infections, tumors, metabolic disturbances, and degenerative diseases affecting the spine, hands, feet, knees, hips, shoulders, and elbows in both children and adults. Additionally, orthopedic surgeons address primary and secondary muscular problems and the impact of central or peripheral nervous system lesions on the musculoskeletal system. Contact Dr. Tennant to book an appointment today.

    Is this Dr. Gregory Tennant affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Tennant is affiliated with Henry Mayo Newhall Hospital which is a Castle Connolly Top Hospital. Castle Connolly Top Hospitals are healthcare institutions recognized for their excellence in specific medical procedures and overall patient care. They are identified through a rigorous peer nomination process, evaluating factors like patient outcomes, quality of care, and expertise. The list recognizes hospitals that excel in 20 or more specific medical procedures, representing the top 25% nationwide. Castle Connolly Top Hospitals

    Where can I learn more about Orthopedic Surgeon?

    Explore Orthopedic Surgeon with insights from trusted medical experts on EverydayHealth.com, where you'll find the most relevant content and helpful condition guides for up-to date information about symptoms, causes, diagnosis, treatment and more. See all our health guides to find trusted information on medical conditions from our experts at Everyday Health.

    Is Gregory Tennant accepting new patients in Lancaster, CA?

    Yes, Dr. Gregory Tennant is accepting new patients at this time.

    Does Dr. Gregory Tennant offer online booking?

    Please contact Dr. Tennant's office at (909) 427-5000 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Gregory Tennant?

    Please contact Dr. Tennant's office at (909) 427-5000 for information regarding telehealth appointment availability or for scheduling assistance.

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