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Dr. John Chang, MD

Mission Viejo, CA

23 Years of Experience

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Chang, Anesthesiologist in Mission Viejo, CA?

    Dr. John Chang, MD is an Anesthesiologist, who primarily practices in Mission Viejo, CA with 2 additional practice locations. He has been practicing for over 23 years and is board certified by the American Board of Anesthesiology. Dr. Chang completed his residency at Nyu Hospitals Center, Anesthesiology; Nyu Hospitals Center, Neurology. Dr. Chang is fluent in English, Chinese, and Spanish, and is currently seeing new patients. Dr. Chang’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Chang’s office at (949) 364-1400.

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

    • Residency: Nyu Hospitals Center, Anesthesiology; Nyu Hospitals Center, Neurology

    • Medical School: Coll Of Med Natl Taiwan Univ- Taipei- Taiwan

    Is Dr. Chang board certified in Anesthesiologist?

    Yes, Dr. John Chang, MD is board certified by the American Board of Anesthesiology

    What languages does Dr. Chang speak?

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

    • Chinese

    • English

    • Spanish

    What conditions does Dr. Chang treat?

    As a Anesthesiologist, Dr. Chang 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. Chang. 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:

    • Colon Cancer Screening
    • Health Screening
    • Colorectal Cancer Screening (PDQ®)
    • Screening Tests to Detect Colorectal Cancer and Polyps
    • Tests to Detect Colorectal Cancer and Polyps
    • Colorectal Cancer Screening
    • Colonoscopy Screening
    • Bowel Cancer Screening

    ICD-10 Codes:

    • Z1211: Encounter for screening for malignant neoplasm of colon

    Also known as:

    • Cataract
    • Cloudy Lens
    • Lens Opacity
    • Eye Clouding

    ICD-10 Codes:

    • H269: Unspecified cataract

    Also known as:

    • Colon Polyps
    • Colonic Polyps
    • Colorectal polyps
    • Bowel polyps
    • Intestinal polyps

    ICD-10 Codes:

    • K635: Polyp of colon

    Also known as:

    • Enlarged Tonsils and Adenoids
    • Adenoids
    • Tonsil and adenoid hypertrophy
    • Swollen tonsils and adenoids
    • Big tonsils and adenoids

    ICD-10 Codes:

    • J353: Hypertrophy of tonsils with hypertrophy of adenoids

    Also known as:

    • Droopy Eyelid
    • Eyelid Disorder
    • Ptosis
    • Eyelid Drooping
    • Upper Eyelid Sagging
    • Fallen Eyelid

    ICD-10 Codes:

    • H02403: Unspecified ptosis of bilateral eyelids

    Also known as:

    • Acid Reflux
    • GERD
    • Acid Reflux (GER & GERD) in Adults
    • Acid Reflux (GER & GERD) in Children
    • Acid Reflux (GER & GERD) in Infants
    • Gastroesophageal Reflux
    • Heartburn
    • Indigestion

    ICD-10 Codes:

    • K219: Gastro-esophageal reflux disease without esophagitis

    Also known as:

    • Ear Infection
    • Middle Ear Infection
    • Otitis Media
    • Ear Inflammation

    ICD-10 Codes:

    • H6690: Otitis media, unspecified, unspecified ear
    • H6693: Otitis media, unspecified, bilateral

    Also known as:

    • Atrial Fibrillation
    • Afib
    • A-fib
    • Irregular heart rhythm

    ICD-10 Codes:

    • I4891: Unspecified atrial fibrillation
    • I480: Paroxysmal atrial fibrillation

    Also known as:

    • Deviated Septum
    • Nose Injuries and Disorder
    • Crooked nose septum
    • Nasal blockage
    • Septal deviation

    ICD-10 Codes:

    • J342: Deviated nasal septum

    Also known as:

    • Gastrointestinal Bleeding
    • Gastrointestinal (GI) Bleeding
    • GI Bleeding
    • Internal Digestive Bleeding
    • Digestive Tract Hemorrhage

    ICD-10 Codes:

    • K922: Gastrointestinal hemorrhage, unspecified

    Also known as:

    • Type 2 Diabetes with Diabetic Cataract
    • Cataract
    • Diabetes Type 2
    • Type 2 diabetes
    • Diabetes-related cataract
    • Cloudy lens from diabetes
    • Diabetic eye cataract

    ICD-10 Codes:

    • E1136: Type 2 diabetes mellitus with diabetic cataract

    Also known as:

    • Stomach Inflammation
    • Stomach Disorder
    • Gastritis & Gastropathy
    • Gastritis
    • Inflamed stomach lining
    • Stomach lining inflammation

    ICD-10 Codes:

    • K2970: Gastritis, unspecified, without bleeding

    Also known as:

    • Acute Appendicitis
    • Appendicitis
    • Inflamed Appendix
    • Sudden Appendix Inflammation
    • Appendicitis Attack

    ICD-10 Codes:

    • K3580: Unspecified acute appendicitis

    Also known as:

    • Ureter Stone
    • Ureteral Disorder
    • Ureteral Calculus

    ICD-10 Codes:

    • N201: Calculus of ureter

    Also known as:

    • Bile Duct Stones
    • Gallstones
    • Choledocholithiasis
    • Biliary duct calculi

    ICD-10 Codes:

    • K8050: Calculus of bile duct without cholangitis or cholecystitis without obstruction

    Also known as:

    • Difficulty Swallowing
    • Swallowing Disorder
    • Dysphagia
    • Trouble swallowing
    • Painful swallowing

    ICD-10 Codes:

    • R1310: Dysphagia, unspecified

    Also known as:

    • Enlarged Adenoids
    • Adenoids
    • Adenoid hypertrophy
    • Swollen adenoids
    • Big adenoids

    ICD-10 Codes:

    • J352: Hypertrophy of adenoids

    Also known as:

    • Acute pain after medical procedure
    • Pain
    • Acute post-operative pain
    • Pain after surgery
    • Post-procedural pain

    ICD-10 Codes:

    • G8918: Other acute postprocedural pain

    Does Dr. Chang accept my insurance?

    Dr. Chang accepts most major insurance plans. Important: Please call our office at (949) 364-1400 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Chang accept in Mission Viejo, CA?

    Dr. Chang in Mission Viejo, 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

    • CalOptima

    • Medicaid

    • Medicare

    • Monarch HealthCare

    • Other Health Care Provider

    • Scan Health Plan

    • St. Joseph Health System (CA)

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Chang's office located?

    Dr. John Chang's Primary Practice

    27700 Medical Center Rd

    Mission Viejo, CA 92691

    (949) 364-1400

    Get Directions

    Dr. John Chang's Practice 2

    31872 Coast Hwy

    Laguna Beach, CA 92651

    Get Directions

    Dr. John Chang's Practice 3

    27401 Los Altos Ste 180

    Mission Viejo, CA 92691

    Get Directions

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

    Dr. Chang's National Provider Identifier (NPI) number is 1598704827.

    What common questions do patients ask about Dr. Chang?

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

    What is Dr. John Chang's specialty?

    Dr. Chang is a Anesthesiologist near Mission Viejo, CA. A physician specialist in pain management and maintaining or restoring a stable state during and right after surgical, obstetric, or diagnostic operations is known as an anesthesiologist. This specialist assesses each patient's risk of surgery and tries to improve their condition before to, during, and following the procedure. Anesthesiologists provide medical management, pain management, and critical care consults in addition to these vital management responsibilities. They are responsible for managing patients with severe illnesses or injuries, supervising the recovery period following anesthesia, directing resuscitation efforts for patients experiencing cardiac or respiratory emergencies that may require artificial ventilation, and diagnosing and treating both acute and chronic pain, including pain related to cancer. Contact Dr. Chang to book an appointment today.

    Is this Dr. John Chang affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Chang is affiliated with Providence Mission Hospital Mission Viejo 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 Anesthesiologist?

    Explore Anesthesiologist 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 John Chang accepting new patients in Mission Viejo, CA?

    Yes, Dr. John Chang is accepting new patients at this time.

    Does Dr. John Chang offer online booking?

    Please contact Dr. Chang's office at (949) 364-1400 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with John Chang?

    Please contact Dr. Chang's office at (949) 364-1400 for information regarding telehealth appointment availability or for scheduling assistance.

    Which board certifications does Dr. John Chang have?

    Dr. John Chang is certified by the American Board of Anesthesiology.

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