AC
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Callahan, Surgeon in Torrance, CA?
Dr. Ann Callahan, MD is a Surgeon, who primarily practices in Torrance, CA with 2 additional practice locations. She is board certified. Dr. Callahan is fluent in English and Spanish, and is currently seeing new patients. Dr. Callahan’s practice accepts Cigna, Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Callahan’s office at (612) 863-7770.
Where did Dr. Callahan go to medical school and complete their residency?
Medical School: University of Virginia
What languages does Dr. Callahan speak?
Dr. Callahan and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does Dr. Callahan treat?
As a Surgeon, Dr. Callahan 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. Callahan. 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:
- Breast Cancer
- Upper-Outer Quadrant Right Female Breast Cancer
- Widespread Left Female Breast Cancer
- Early Breast Cancer of the Left Breast
- Early Breast Cancer of the Right Breast
- Upper-Inner Quadrant Left Female Breast Cancer
- Mammary cancer
- Breast carcinoma
- Breast tumor
- Female Breast Cancer
- Malignant Breast Tumor
- Breast Carcinoma
- Right female breast cancer upper-outer
- Upper-outer right female breast tumor
- Malignant growth in upper-outer right female breast
- Left female breast cancer in multiple areas
- Diffuse left female breast cancer
- Malignant growth in overlapping sites of left female breast
- Intraductal carcinoma in situ left breast
- Precancerous cells left breast
- Non-invasive breast cancer left breast
- DCIS left breast
- Intraductal carcinoma in situ right breast
- Precancerous cells right breast
- Non-invasive breast cancer right breast
- DCIS right breast
- Left female breast cancer upper-inner
- Upper-inner left female breast tumor
- Malignant growth in upper-inner left female breast
ICD-10 Codes:
- C50912: Malignant neoplasm of unspecified site of left female breast
- C50911: Malignant neoplasm of unspecified site of right female breast
- C50412: Malignant neoplasm of upper-outer quadrant of left female breast
- C50411: Malignant neoplasm of upper-outer quadrant of right female breast
- C50812: Malignant neoplasm of overlapping sites of left female breast
- D0512: Intraductal carcinoma in situ of left breast
- D0511: Intraductal carcinoma in situ of right breast
- C50212: Malignant neoplasm of upper-inner quadrant of left female breast
Also known as:
- Mammogram for Breast Cancer Screening
- Health Screening
- Mammography
- Breast Cancer Screening (PDQ®)
- Mammograms
- Breast X-ray
- Breast Cancer Check
ICD-10 Codes:
- Z1231: Encounter for screening mammogram for malignant neoplasm of breast
Also known as:
- Cancer Follow-up Exam
- Cancer
- Post-cancer treatment checkup
- Malignancy surveillance
- Oncology follow-up
ICD-10 Codes:
- Z08: Encounter for follow-up examination after completed treatment for malignant neoplasm
Also known as:
- Umbilical Hernia
- Groin Hernia (One Side)
- Hernia
- Inguinal Hernia
- Belly Button Hernia
- Navel Hernia
- Umbilical Rupture
- Unilateral Inguinal Hernia
- Single Groin Hernia
- Hernia in One Groin
ICD-10 Codes:
- K429: Umbilical hernia without obstruction or gangrene
- K4090: Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
Also known as:
- Gallstones with Chronic Gallbladder Inflammation
- Bile Duct Disease
- Gallstones
- Chronic cholecystitis with gallstones
- Long-term gallbladder inflammation
ICD-10 Codes:
- K8010: Calculus of gallbladder with chronic cholecystitis without obstruction
Also known as:
- Lump in Right Breast
- Breast Disease
- Right breast mass
- Right breast lesion
- Right breast nodule
ICD-10 Codes:
- N6310: Unspecified lump in the right breast, unspecified quadrant
Also known as:
- Benign Left Breast Tumor
- Benign Tumor
- Breast Disease
- Non-cancerous left breast growth
- Left breast mass
- Left breast lump
ICD-10 Codes:
- D242: Benign neoplasm of left breast
Also known as:
- Gallstones
- Cholelithiasis
- Gallbladder stones
- Biliary calculi
ICD-10 Codes:
- K8020: Calculus of gallbladder without cholecystitis without obstruction
Also known as:
- Benign Breast Lump
- Benign Tumor
- Breast Disease
- Non-cancerous breast mass
- Breast fibroadenoma
- Benign breast disease
ICD-10 Codes:
- D241: Benign neoplasm of right breast
Also known as:
- Nipple Discharge
- Breast Disease
- Nipple Secretion
- Leaking Nipple
- Galactorrhea
ICD-10 Codes:
- N6452: Nipple discharge
Also known as:
- Benign Lipoma of Trunk
- Benign Tumor
- Non-cancerous fatty lump on body
- Trunk lipoma
- Body fatty tumor
ICD-10 Codes:
- D171: Benign lipomatous neoplasm of skin and subcutaneous tissue of trunk
Also known as:
- Acute Appendicitis
- Appendicitis
- Inflamed Appendix
- Sudden Appendix Inflammation
- Appendicitis Attack
ICD-10 Codes:
- K3580: Unspecified acute appendicitis
Which procedures does Dr. Callahan perform as a Surgeon?
As a Surgeon, procedures performed by a Dr. Ann Callahan may include:
- Abdominal Wall Reconstruction
- Amputation
- Appendicitis / Appendectomy
- Brain Aneurysm Treatment
- Brain Surgery
- Brain Tumor Evaluation
- Central Line Placement
- Cerebral Shunt
For detailed information, please contact Dr. Callahan's office.
Does Dr. Callahan accept my insurance?
Dr. Callahan accepts most major insurance plans. Important: Please call our office at (612) 863-7770 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Callahan accept in Torrance, CA?
Dr. Callahan in Torrance, 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
Centene
Elevance Health Inc. (formerly Anthem)
Humana
Medicare
OptumRx
Other Health Care Provider
Other Provider Networks
UnitedHealthcare
View All Insurances
Where is Dr. Callahan's office located?
Dr. Ann Callahan's Primary Practice
23451 Madison St Ste 340
Torrance, CA 90505
(612) 863-7770
What is Dr. Callahan's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Callahan's National Provider Identifier (NPI) number is 1093962847.
What common questions do patients ask about Dr. Callahan?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Callahan
What is Dr. Ann Callahan's specialty?
Dr. Callahan is a Surgeon near Torrance, CA. General surgeons are experts in diagnosing and managing surgical conditions which includes preoperative, operative, and postoperative care, as well as addressing complications. Their expertise include the areas such as the alimentary tract, breast, abdomen, skin and soft tissue, endocrine system, head and neck, pediatric surgery, surgical critical care, surgical oncology, trauma, burns, and vascular surgery. General surgeons increasingly utilize minimally invasive and endoscopic techniques to provide proper care. In addition to this, many general surgeons have expertise in transplantation, plastic, and cardiothoracic surgery. Contact Dr. Callahan to book an appointment today.
Is this Dr. Ann Callahan affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Callahan is affiliated with Torrance Memorial Medical Center, Providence Little Company Of Mary Medical Center Torrance 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 Surgeon?
Explore Surgeon 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 Ann Callahan accepting new patients in Torrance, CA?
Yes, Dr. Ann Callahan is accepting new patients at this time.
Does Dr. Ann Callahan offer online booking?
Please contact Dr. Callahan's office at (612) 863-7770 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Ann Callahan?
Please contact Dr. Callahan's office at (612) 863-7770 for information regarding telehealth appointment availability or for scheduling assistance.
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