AL
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Lewis, Surgical Oncologist in South Pasadena, CA?
Dr. Aaron Lewis, MD is a Surgical Oncologist, who primarily practices in South Pasadena, CA with 2 additional practice locations. He is board certified. Dr. Lewis is fluent in English and Spanish, and is currently seeing new patients. Dr. Lewis’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Lewis’s office at (626) 396-2900.
What languages does Dr. Lewis speak?
Dr. Lewis and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Lewis treat?
As a Surgical Oncologist, Dr. Lewis 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. Lewis. 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:
- Colorectal Cancer
- Rectal cancer
- Colon cancer
- Bowel cancer
- Malignant neoplasm of rectum
- Malignant neoplasm of colon
- Malignant neoplasm of sigmoid colon
- Colon Cancer
- Ascending Colon Cancer
- Bowel Cancer
- Colorectal Carcinoma
- Rectal Cancer
ICD-10 Codes:
- C20: Malignant neoplasm of rectum
- C189: Malignant neoplasm of colon, unspecified
- C187: Malignant neoplasm of sigmoid colon
- C182: Malignant neoplasm of ascending colon
- C19: Malignant neoplasm of rectosigmoid junction
Also known as:
- Cancer Spread to Liver and Bile Duct
- Liver Cancer
- Childhood Liver Cancer
- Metastatic Liver Cancer
- Secondary Liver Tumor
- Liver Metastasis
- Hepatic Cancer
- Hepatocellular Carcinoma
ICD-10 Codes:
- C787: Secondary malignant neoplasm of liver and intrahepatic bile duct
- C220: Liver cell carcinoma
Also known as:
- Pancreatic Cancer
- Cancer of the pancreas
- Malignant neoplasm of pancreas
- Pancreatic adenocarcinoma
- Pancreas Cancer
- Malignant Pancreatic Tumor
- Pancreatic Carcinoma
ICD-10 Codes:
- C250: Malignant neoplasm of head of pancreas
- C259: Malignant neoplasm of pancreas, unspecified
Also known as:
- Other Specific Pancreatic Disease
- Pancreatic Cyst
- Pancreatic Disease
- Miscellaneous Pancreas Disorders
- Named Pancreatic Conditions
- Other Defined Pancreas Problems
- Cyst on Pancreas
- Pancreatic Pseudocyst
- Fluid Sac on Pancreas
ICD-10 Codes:
- K8689: Other specified diseases of pancreas
- K862: Cyst of pancreas
Also known as:
- Other non-cancerous neuroendocrine Tumor
- Neuroendocrine Tumor
- Benign Tumor
- Cancer
- Endocrine Disease
- Other benign neuroendocrine growths
- Various non-cancerous hormone-producing tumors
- Malignant NET
- Neuroendocrine Cancer
- NET Cancer
ICD-10 Codes:
- D3A8: Other benign neuroendocrine tumors
- C7A8: Other malignant neuroendocrine tumors
Also known as:
- Stomach Cancer
- Gastric Cancer
- Malignant Neoplasm of Stomach
- Stomach Tumor
ICD-10 Codes:
- C169: Malignant neoplasm of stomach, unspecified
Also known as:
- Enlarged Liver
- Liver Disease
- Hepatomegaly
- Swollen liver
- Liver enlargement
ICD-10 Codes:
- R160: Hepatomegaly, not elsewhere classified
Also known as:
- Secondary Peritoneal Cancer
- Cancer
- Peritoneal Disorder
- Metastatic Peritoneal Cancer
- Cancer Spread to Peritoneum
- Peritoneal Carcinomatosis
ICD-10 Codes:
- C786: Secondary malignant neoplasm of retroperitoneum and peritoneum
Also known as:
- Other Pre-Procedure Examination
- Various pre-op checks
- Miscellaneous pre-surgery exams
- Other pre-treatment assessments
ICD-10 Codes:
- Z01818: Encounter for other preprocedural examination
Also known as:
- Bile Duct Cancer
- Liver Cancer
- Cholangiocarcinoma
- Intrahepatic cholangiocarcinoma
ICD-10 Codes:
- C221: Intrahepatic bile duct carcinoma
Also known as:
- Widespread Cancer
- Cancer
- Disseminated Cancer
- Metastatic Cancer
- Advanced Cancer
ICD-10 Codes:
- C800: Disseminated malignant neoplasm, unspecified
Also known as:
- Blocked Bile Duct
- Bile Duct Disease
- Biliary Obstruction
- Bile Duct Blockage
- Obstructed Bile Duct
ICD-10 Codes:
- K831: Obstruction of bile duct
Which procedures does Dr. Lewis perform as a Surgical Oncologist?
As a Surgical Oncologist, procedures performed by a Dr. Aaron Lewis may include:
- 3D Conformal Radiotherapy
- Adaptive Radiation Therapy (ART)
- Adrenalectomy
- Blood Thinning Therapy / Anticoagulation
- Blood Transfusion Consultation
- Blood Transfusion Follow Up
- Bone Excision
- Bone Grafting
For detailed information, please contact Dr. Lewis' office.
Does Dr. Lewis accept my insurance?
Dr. Lewis accepts most major insurance plans. Important: Please call our office at (626) 396-2900 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Lewis accept in South Pasadena, CA?
Dr. Lewis in South Pasadena, 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
Apex Healthcare
Centene
City of Los Angeles
CVS Health (formerly Aetna)
Elevance Health Inc. (formerly Anthem)
Heritage Health
Medicare
Other Health Care Provider
UnitedHealthcare
View All Insurances
Where is Dr. Lewis' office located?
Dr. Aaron Lewis' Primary Practice
209 Fair Oaks Ave
South Pasadena, CA 91030
(626) 396-2900
What is Dr. Lewis's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Lewis's National Provider Identifier (NPI) number is 1053542100.
What common questions do patients ask about Dr. Lewis?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Lewis
What is Dr. Aaron Lewis's specialty?
Dr. Lewis is a Surgical Oncologist near South Pasadena, CA. A surgical oncologist is a highly qualified and trained surgeon with specialized expertise in the prevention, diagnosis, treatment, and rehabilitation of cancer patients. They have received additional training in a multidisciplinary approach and dedicate a significant portion of their practice to these areas, as well as to cancer research. Contact Dr. Lewis to book an appointment today.
Is this Dr. Aaron Lewis affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Lewis is affiliated with Huntington Hospital (pasadena, Ca), City Of Hope - Duarte Cancer Center, Usc Arcadia Hospital which are a Castle Connolly Top Hospitals. 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 Surgical Oncologist?
Explore Surgical Oncologist 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 Aaron Lewis accepting new patients in South Pasadena, CA?
Yes, Dr. Aaron Lewis is accepting new patients at this time.
Does Dr. Aaron Lewis offer online booking?
Please contact Dr. Lewis's office at (626) 396-2900 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Aaron Lewis?
Please contact Dr. Lewis's office at (626) 396-2900 for information regarding telehealth appointment availability or for scheduling assistance.
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