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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 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 an Orthopedic Surgeon like Dr. Tennant typically 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. Learn more about our claims-based healthcare methodology.

    Also known as:

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

    ICD-10 Codes:

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

    What procedures does an Orthopedic Surgeon like Dr. Tennant typically 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. Learn more about our claims-based healthcare methodology.

    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:

    • Carpal Tunnel Injection
    • Corticosteroid injection for carpal tunnel
    • Local anesthetic for carpal tunnel
    • Wrist pain injection
    • Carpal tunnel syndrome injection

    CPT Codes:

    • 20526: Injection, therapeutic (eg, local anesthetic, corticosteroid), carpal tunnel

    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:

    • 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:

    • 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

    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 Healthcare

    • All Other Third Party

    • Centene Corporation

    • City of Los Angeles

    • CVS Health (formerly Aetna)

    • Humana

    • Medicare

    • Other Health Care Provider

    • UnitedHealth Group

    • Unknown

    View All Insurances

    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

    Get Directions

    Scpmg Dept Orthopedics

    9961 Sierra Ave

    Fontana, CA 92335

    Get Directions

    Dr. Gregory Tennant's Practice 3

    23838 Valencia Blvd Ste 260

    Valencia, CA 91355

    Get Directions

    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.

    What does an Orthopedic Surgeon do?

    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.

    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

    When to see an Orthopedic Surgeon?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see an Orthopedic Surgeon. Explore 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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