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Dr. Andreas Kaiser, MD

Colon & Rectal Surgeon (Proctologist), Surgeon

Duarte, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Kaiser, Colon & Rectal Surgeon (Proctologist) in Duarte, CA?

    Dr. Andreas Kaiser, MD is a Colon & Rectal Surgeon (Proctologist), who primarily practices in Duarte, CA with 2 additional practice locations. Dr. Kaiser completed his residency at University of Zurich. He is a member of the American College of Surgeons (ACS), American Medical Association (AMA), American Pancreatic Association (APA), American Society of Colon and Rectal Surgeons (ASCRS), Association for Academic Surgery (AAS), Association of Invasive and Operative Physicians of Switzerland (Foederatio Medicorum Scrutantium,, European Society of Coloproctology (ESCP), International Society of University Colorectal Surgeons (ISUCRS), Massachusetts Medical Society (MMS), Society of American Gastrointestinal and Endoscopic Surgeons (SAGES), Society for Surgery of the Alimentary Tract (SSAT), Society of Laparoendoscopic Surgeons (SLS), Society of University Surgeons (SUS), Southern California Society of Colon and Rectal Surgeons (SCSCRS), Swiss Medical Association (Foederatio Medicorum Helveticorum-FMH), Swiss Society of Visceral Surgery (SSVC), and Swiss Surgical Society (SGC). Dr. Kaiser is fluent in English, French, German, and Italian, and is currently seeing new patients. Dr. Kaiser’s practice accepts Kaiser Permanente, Medicare, Aetna, Cigna, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Kaiser’s office at (626) 256-4673.

    What are Areas of Expertise for Dr. Kaiser?

    Dr. Andreas Kaiser, MD is a highly-rated, board-certified Colon & Rectal Surgeon (Proctologist) 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. Kaiser empowers patients to confidently navigate their health journey, specializing in Colon & Rectal Cancer & Surgery, Diverticulitis, Incontinence/Pelvic Floor Disorders, Inflammatory Bowel Disease, and comprehensive wellness support. Serving the Duarte, CA community, Dr. Kaiser is dedicated to enhancing lives through expert, patient-centered care.

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

    • Fellowship: Harvard Medical School, Beth Israel Hospital, Surgical Research | University Hospital of Zurich, Visceral Surgery | USC Division of Colorectal Surgery Colon and Rectal Surgery

    • Residency: University of Zurich | University Hospital of Zurich, Surgery and Pediatric Surgery, 1995 - 1998

    • Medical School: Universitat Zurich, Medizinische Fakultat

    What languages does Dr. Kaiser speak?

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

    • English
    • French
    • German
    • Italian

    What conditions does a Colon & Rectal Surgeon (Proctologist) like Dr. Kaiser typically treat?

    As a Colon & Rectal Surgeon (Proctologist), Dr. Kaiser 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. Kaiser. 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:

    • Colorectal Cancer
    • Rectal cancer
    • Colon cancer
    • Bowel cancer
    • Malignant neoplasm of rectum
    • Malignant neoplasm of sigmoid colon
    • Malignant neoplasm of colon
    • Colon Cancer
    • Ascending Colon Cancer
    • Bowel Cancer
    • Colorectal Carcinoma
    • Rectal Cancer

    ICD-10 Codes:

    • C20: Malignant neoplasm of rectum
    • C187: Malignant neoplasm of sigmoid colon
    • C189: Malignant neoplasm of colon, unspecified
    • C182: Malignant neoplasm of ascending colon
    • C19: Malignant neoplasm of rectosigmoid junction

    Also known as:

    • Other Anal and Rectal Condition
    • Anal Disorder
    • Rectal Disorder
    • Proctitis
    • Anal Disorders
    • Rectal Disorders

    ICD-10 Codes:

    • K6289: Other specified diseases of anus and rectum

    Also known as:

    • Other Post-Surgery Condition
    • Postoperative State
    • Recovery After Surgery
    • Surgical Follow-up

    ICD-10 Codes:

    • Z98890: Other specified postprocedural states

    Also known as:

    • Anal Cancer
    • Anal Cancer Treatment (PDQ®)
    • Anus Cancer
    • Anal Carcinoma

    ICD-10 Codes:

    • C210: Malignant neoplasm of anus, unspecified

    What procedures does a Colon & Rectal Surgeon (Proctologist) like Dr. Kaiser typically perform?

    As a Colon & Rectal Surgeon (Proctologist), Dr. Kaiser 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. Kaiser. 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:

    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Biopsy
    • Colonoscopy with Polyp Removal
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision

    CPT Codes:

    • 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45380: Colonoscopy, flexible; with biopsy, single or multiple
    • 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique

    Also known as:

    • Flexible Sigmoidoscopy
    • Colorectal Cancer Screening Tests
    • Sigmoidoscopy
    • Lower colon exam
    • Flexible colon scope
    • Rectum and lower colon check

    CPT Codes:

    • 45330: Sigmoidoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    Also known as:

    • Flexible Sigmoidoscopy with Biopsy
    • Colorectal Cancer Screening Tests
    • Sigmoid Colon Scope with Biopsy
    • Lower Endoscopy with Tissue Sample
    • Flexible Sigmoidoscopy and Biopsy
    • Rectum and Lower Colon Exam

    CPT Codes:

    • 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple

    Also known as:

    • Anoscopy (Diagnostic)
    • Anoscopy
    • Anal Canal Exam
    • Rectal Scope Exam
    • Anus Diagnostic Procedure

    CPT Codes:

    • 46600: Anoscopy; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    Also known as:

    • Endoscopy and Biopsy of Small Intestine Pouch
    • Kock pouch endoscopy
    • Ileal reservoir evaluation
    • Small bowel pouch biopsy

    CPT Codes:

    • 44386: Endoscopic evaluation of small intestinal pouch (eg, Kock pouch, ileal reservoir [S or J]); with biopsy, single or multiple

    Does Dr. Kaiser accept my insurance?

    Dr. Kaiser accepts most major insurance plans. Important: Please call our office at (626) 256-4673 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Kaiser accept in Duarte, CA?

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

    Top Insurances

    • Centene Corporation

    • Cigna Group

    • City of Los Angeles

    • CVS Health (formerly Aetna)

    • Elevance Health Inc. (formerly Anthem)

    • H & R Block

    • Medicare

    • Other Health Care Provider

    • State of California

    • UnitedHealth Group

    View All Insurances

    Where is Dr. Kaiser's office located?

    Dr. Andreas Kaiser's Primary Practice

    1500 Duarte Rd

    Duarte, CA 91010

    (626) 256-4673

    Get Directions

    Dr. Andreas Kaiser's Practice 2

    1441 Eastlake Ave Ste 7418

    Los Angeles, CA 90089

    Get Directions

    Dr. Andreas Kaiser's Practice 3

    209 Fair Oaks Ave

    South Pasadena, CA 91030

    Get Directions

    What hospitals are Dr. Kaiser affiliated with?

    CastleConnolyTopDoctors

    Castle Connolly Top Hospital

    This doctor is affiliated with a Castle Connolly Top Hospital.

    Dr. Kaiser has admitting privileges at the following hospitals:

    Recognitions

    Memberships & Associations

    American College of Surgeons (ACS)

    Member

    American Medical Association (AMA)

    Member

    American Pancreatic Association (APA)

    Member

    American Society of Colon and Rectal Surgeons (ASCRS)

    Member

    Association for Academic Surgery (AAS)

    Member

    Association of Invasive and Operative Physicians of Switzerland (Foederatio Medicorum Scrutantium,

    Member

    European Society of Coloproctology (ESCP)

    Member

    International Society of University Colorectal Surgeons (ISUCRS)

    Member

    Massachusetts Medical Society (MMS)

    Member

    Society of American Gastrointestinal and Endoscopic Surgeons (SAGES)

    Member

    Society for Surgery of the Alimentary Tract (SSAT)

    Member

    Society of Laparoendoscopic Surgeons (SLS)

    Member

    Society of University Surgeons (SUS)

    Member

    Southern California Society of Colon and Rectal Surgeons (SCSCRS)

    Member

    Swiss Medical Association (Foederatio Medicorum Helveticorum-FMH)

    Member

    Swiss Society of Visceral Surgery (SSVC)

    Member

    Swiss Surgical Society (SGC)

    Member

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

    Dr. Kaiser's National Provider Identifier (NPI) number is 1720092679.

    What common questions do patients ask about Dr. Kaiser?

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

    What is Dr. Andreas Kaiser's specialty?

    Dr. Kaiser is a Colon & Rectal Surgeon (Proctologist) near Duarte, CA.

    What does a Colon & Rectal Surgeon (Proctologist) do?

    A colon and rectal surgeon possesses the expertise to diagnose and treat a variety of ailments affecting the intestinal tract, including the colon, rectum, anal canal, and perianal area, through both medical and surgical interventions. Furthermore, this professional also engages with other organs and tissues, including the liver, urinary system, and female reproductive system, that are relevant to primary intestinal disorders.

    Is Dr. Andreas Kaiser affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Kaiser is affiliated with City Of Hope - Duarte Cancer Center 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 a Colon & Rectal Surgeon (Proctologist)?: Guides for symptoms, conditions, and treatments

    Understand your symptoms and know when it’s time to see a Colon & Rectal Surgeon (Proctologist). 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 Dr. Andreas Kaiser accepting new patients in Duarte, CA?

    Yes, Dr. Andreas Kaiser is accepting new patients at this time.

    Does Dr. Andreas Kaiser offer online booking?

    Please contact Dr. Kaiser's office at (626) 256-4673 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Dr. Andreas Kaiser?

    Please contact Dr. Kaiser's office at (626) 256-4673 to schedule an appointment.

    Where is Dr. Kaiser's office located?

    Dr. Kaiser's offices are located in Duarte, CA, Los Angeles, CA, and South Pasadena, CA.