
Dr. John Diana, MD
Adult Reconstructive Orthopedic Surgeon
,Orthopedic Sports Medicine Specialist
,Orthopedic Trauma Specialist
,Orthopedic Surgeon
Saint Helena, CA
Accepting patients
Who is Dr. Diana, Adult Reconstructive Orthopedic Surgeon in Saint Helena, CA?
Dr. John Diana, MD is an Adult Reconstructive Orthopedic Surgeon, who primarily practices in Saint Helena, CA with 1 additional practice location. Dr. Diana graduated from Indiana University School of Medicine and completed his residency at Hospital Upenn. Dr. Diana is fluent in English, Persian, and Spanish, and is currently seeing new patients. Dr. Diana’s practice accepts Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Diana’s office at (707) 254-7117.
What are Areas of Expertise for Dr. Diana?
Dr. John Diana, MD is a highly-rated, board-certified Adult Reconstructive Orthopedic Surgeon known for expertly diagnosing, treating, and managing a wide array of related conditions and procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Diana empowers patients to confidently navigate their health journey, specializing in Hip Replacement, Knee Replacement, Minimally Invasive Surgery, Robotic Surgery, and comprehensive wellness support. Serving the Saint Helena, CA community, Dr. Diana is dedicated to enhancing lives through expert, patient-centered care.
Where did Dr. Diana go to medical school and complete their residency?
Residency: Hospital Upenn | Pennsylvania Hospital of the University of Pennsylvania Health System Program
Medical School: Indiana University School of Medicine
What languages does Dr. Diana speak?
Dr. Diana and their clinical team can communicate with patients in the following languages:
English
Persian
Spanish
What conditions does an Adult Reconstructive Orthopedic Surgeon like Dr. Diana typically treat?
As an Adult Reconstructive Orthopedic Surgeon, Dr. Diana 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. Diana. 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
- Primary Osteoarthritis in Right Hip
- Osteoarthritis of the left 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
- M1611: Unilateral primary osteoarthritis, right hip
- M1612: Unilateral primary osteoarthritis, left hip
Also known as:
- Joint Replacement Aftercare
- Hip Replacement
- Joint Disorder
- Knee Replacement
- Post-joint replacement care
- Joint surgery recovery
- Orthopedic aftercare
ICD-10 Codes:
- Z471: Aftercare following joint replacement surgery
Also known as:
- Pre-Procedure Lab Tests
- Pre-op blood work
- Lab tests before surgery
- Pre-treatment lab assessment
ICD-10 Codes:
- Z01812: Encounter for preprocedural laboratory examination
Also known as:
- Left Artificial Knee Joint
- Knee Replacement
- Left Knee Replacement
- Left Knee Prosthesis
- Left Knee Arthroplasty
ICD-10 Codes:
- Z96652: Presence of left artificial knee joint
What procedures does an Adult Reconstructive Orthopedic Surgeon like Dr. Diana typically perform?
As an Adult Reconstructive Orthopedic Surgeon, Dr. Diana 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. Diana. 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:
- 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:
- 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:
- Joint or Bursa Injection/Fluid Removal
- Arthrocentesis
- Major Joint Aspiration
- Bursa Injection
- Joint Fluid Removal
CPT Codes:
- 20610: Arthrocentesis, aspiration and/or injection, major joint or bursa (eg, shoulder, hip, knee, subacromial bursa); without ultrasound guidance
Also known as:
- Femoral Nerve Block Injection
- Femoral nerve injection
- Thigh nerve block
- Pain relief injection for thigh
- Nerve block with imaging guidance
CPT Codes:
- 64447: Injection(s), anesthetic agent(s) and/or steroid; femoral nerve, including imaging guidance, when performed
Also known as:
- Computer-Assisted Orthopedic Surgery Guidance
- Image-Guided Orthopedic Surgery
- Navigational Orthopedic Procedure
- Computer-Guided Bone Surgery
- Fluoroscopic-Guided Orthopedic Surgery
CPT Codes:
- 0054T: Computer-assisted musculoskeletal surgical navigational orthopedic procedure, with image-guidance based on fluoroscopic images (List separately in addition to code for primary procedure)
Does Dr. Diana accept my insurance?
Dr. Diana accepts most major insurance plans. Important: Please call our office at (707) 254-7117 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Diana accept in Saint Helena, CA?
Dr. Diana in Saint Helena, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
All Other Third Party
Blue Shield of California
CVS Health (formerly Aetna)
Federal government of the United States
Medicare
Other Provider Networks
St. Joseph Health System (CA)
United American Healthcare Corp (UAHC)
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Diana's office located?

Coon Joint Replacement Institute: Adventist Health St. Helena
6 Woodland Road, Suite 202
Saint Helena, CA 94574
(707) 254-7117
What is Dr. Diana's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Diana's National Provider Identifier (NPI) number is 1649297540.
What common questions do patients ask about Dr. Diana?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Diana
What is Dr. John Diana's specialty?
Dr. Diana is a Adult Reconstructive Orthopedic Surgeon near Saint Helena, CA.
What does an Adult Reconstructive Orthopedic Surgeon do?
Adult reconstructive orthopaedic surgeons, recognized as a fellowship subspecialty by several state medical boards, focus on reconstructive procedures including joint arthroplasty (such as hip and knee replacements), osteotomy, arthroscopy, soft-tissue reconstruction, and various other adult reconstructive surgical interventions.
Is this Dr. John Diana affiliated with a ranked Castle Connolly Top Hospital?
No, Diana is not affiliated with a Castle Connolly Top Hospital, but is affiliated with the following hospitals: Adventist Health St. Helena, Providence Queen of the Valley Medical Center. Castle Connolly Top Hospitals 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 Adult Reconstructive Orthopedic Surgeon?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see an Adult Reconstructive 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 John Diana accepting new patients in Saint Helena, CA?
Yes, Dr. John Diana is accepting new patients at this time.
Does Dr. John Diana offer online booking?
Please contact Dr. Diana's office at (707) 254-7117 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with John Diana?
Please contact Dr. Diana's office at (707) 254-7117 for information regarding telehealth appointment availability or for scheduling assistance.
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Coon Joint Replacement Institute: Adventist Health St. Helena
6 Woodland Road, Suite 202
Saint Helena, CA 94574