MC
Accepting patients
Online booking
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Cassidy, Surgical Oncologist in Boston, MA?
Dr. Michael Cassidy, MD is a Surgical Oncologist, who primarily practices in Boston, MA with 2 additional practice locations. Dr. Cassidy is fluent in English, and is currently seeing new patients. Dr. Cassidy’s practice accepts Cigna, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Cassidy’s office.
What are Areas of Expertise for Dr. Cassidy?
Dr. Michael Cassidy, MD is a highly-rated, board-certified Surgical Oncologist known for expertly diagnosing, treating, and managing a wide array of related conditions or procedures. Utilizing the latest medical advancements and evidence-based practices, Dr. Cassidy empowers patients to confidently navigate their health journey, specializing in Breast Cancer, Melanoma, Sarcoma-Soft Tissue, or comprehensive wellness support. Serving the Boston/MA community, Dr. Cassidy is dedicated to enhancing lives through expert, patient-centered care.
What languages does Dr. Cassidy speak?
Dr. Cassidy and their clinical team can communicate with patients in the following languages:
English
What conditions does Dr. Cassidy treat?
As a Surgical Oncologist, Dr. Cassidy 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. Cassidy. 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
- Early Breast Cancer of the Right Breast
- Early Breast Cancer of the Left Breast
- Upper-Outer Quadrant Right Female Breast Cancer
- Mammary cancer
- Breast carcinoma
- Breast tumor
- Intraductal carcinoma in situ right breast
- Precancerous cells right breast
- Non-invasive breast cancer right breast
- DCIS right breast
- Intraductal carcinoma in situ left breast
- Precancerous cells left breast
- Non-invasive breast cancer left breast
- DCIS left breast
- Right female breast cancer upper-outer
- Upper-outer right female breast tumor
- Malignant growth in upper-outer right female breast
- Female Breast Cancer
- Malignant Breast Tumor
- Breast Carcinoma
ICD-10 Codes:
- C50911: Malignant neoplasm of unspecified site of right female breast
- C50912: Malignant neoplasm of unspecified site of left female breast
- D0511: Intraductal carcinoma in situ of right breast
- D0512: Intraductal carcinoma in situ of left breast
- C50411: Malignant neoplasm of upper-outer quadrant of right female breast
- C50919: Malignant neoplasm of unspecified site of unspecified female breast
- C50412: Malignant neoplasm of upper-outer quadrant of left female breast
Also known as:
- Abnormal Breast Imaging Results
- Mammography
- Inconclusive mammogram
- Unclear breast scan results
- Abnormal breast scan
ICD-10 Codes:
- R928: Other abnormal and inconclusive findings on diagnostic imaging of 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:
- Calcium Spots on Mammogram
- Mammography
- Breast calcifications
- Mammogram calcifications
- Calcium deposits in breast
ICD-10 Codes:
- R921: Mammographic calcification found on diagnostic imaging of breast
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:
- Other Specific Breast Disorder
- Breast Disease
- Various breast conditions
- Miscellaneous breast ailments
- Specific breast problems
ICD-10 Codes:
- N6489: Other specified disorders of breast
Also known as:
- Lump in Right Breast
- Breast Lump in Right Upper Outer Quadrant
- Breast Disease
- Right breast mass
- Right breast lesion
- Right breast nodule
- Lump in right breast upper outer
- Right breast mass upper outer
- Palpable mass right upper outer breast
ICD-10 Codes:
- N6310: Unspecified lump in the right breast, unspecified quadrant
- N6311: Unspecified lump in the right breast, upper outer 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:
- Benign Breast Changes in Left Breast
- Breast Disease
- Non-cancerous left breast conditions
- Fibrocystic changes left breast
- Left mammary dysplasia
ICD-10 Codes:
- N6092: Unspecified benign mammary dysplasia of left breast
Also known as:
- Other Soft Tissue Disorder
- Connective Tissue Disorder
- Muscle Disorder
- Muscle and connective tissue problems
- Uncommon soft tissue conditions
- Various soft tissue ailments
ICD-10 Codes:
- M7989: Other specified soft tissue disorders
Also known as:
- Benign Breast Changes in Right Breast
- Breast Disease
- Non-cancerous right breast changes
- Right breast benign dysplasia
- Right breast fibrocystic changes
ICD-10 Codes:
- N6091: Unspecified benign mammary dysplasia of right breast
Also known as:
- Personal History of Breast Cancer
- Breast Cancer
- Past breast cancer
- Previous mammary malignancy
- History of breast tumor
ICD-10 Codes:
- Z853: Personal history of malignant neoplasm of breast
Also known as:
- Localized Swollen Lymph Nodes
- Enlarged glands in one area
- Local lymphadenopathy
- Swollen glands
ICD-10 Codes:
- R590: Localized enlarged lymph nodes
What procedures does Dr. Cassidy perform?
As a Surgical Oncologist, Dr. Cassidy 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. Cassidy. 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:
- Partial Mastectomy
- Simple Mastectomy
- Partial Mastectomy with Lymph Node Removal
- Mastectomy
- Lumpectomy
- Breast conserving surgery
- Quadrantectomy
- Segmentectomy
- Complete Mastectomy
- Breast Removal Surgery
- Total Mastectomy
- Unilateral Mastectomy
- Lumpectomy with Lymphadenectomy
- Breast Conserving Surgery with Lymph Node Dissection
- Quadrantectomy with Axillary Dissection
CPT Codes:
- 19301: Mastectomy, partial (eg, lumpectomy, tylectomy, quadrantectomy, segmentectomy);
- 19303: Mastectomy, simple, complete
- 19302: Mastectomy, partial (eg, lumpectomy, tylectomy, quadrantectomy, segmentectomy); with axillary lymphadenectomy
Also known as:
- Breast Lump Removal with Marker Guidance
- Ultrasound-Guided Breast Biopsy
- MRI-Guided Breast Biopsy
- Breast Biopsy
- Image-Guided Breast Lesion Excision
- Wire-Localized Breast Biopsy
- Open Excision of Marked Breast Lesion
- Breast Mass Removal with Marker
- Percutaneous Breast Biopsy
- Breast Tissue Sample
- Breast Lesion Biopsy with Clip
- Magnetic Resonance Breast Biopsy
- Percutaneous Breast Biopsy with MRI
- Breast Lesion Biopsy with Localization
CPT Codes:
- 19125: Excision of breast lesion identified by preoperative placement of radiological marker, open; single lesion
- 19083: Biopsy, breast, with placement of breast localization device(s) (eg, clip, metallic pellet), when performed, and imaging of the biopsy specimen, when performed, percutaneous; first lesion, including ultrasound guidance
- 19085: Biopsy, breast, with placement of breast localization device(s) (eg, clip, metallic pellet), when performed, and imaging of the biopsy specimen, when performed, percutaneous; first lesion, including magnetic resonance guidance
Also known as:
- Breast Lesion Localization
- Breast clip placement
- Wire localization for breast surgery
- Radioactive seed placement in breast
- Ultrasound-guided breast marker
CPT Codes:
- 19285: Placement of breast localization device(s) (eg, clip, metallic pellet, wire/needle, radioactive seeds), percutaneous; first lesion, including ultrasound guidance
Also known as:
- Breast Lesion Excision
- Breast Cyst Removal
- Fibroadenoma Excision
- Breast Tumor Removal
- Nipple/Areolar Lesion Removal
CPT Codes:
- 19120: Excision of cyst, fibroadenoma, or other benign or malignant tumor, aberrant breast tissue, duct lesion, nipple or areolar lesion (except 19300), open, male or female, 1 or more lesions
Also known as:
- Intermediate Wound Repair (Scalp, Body, Limbs)
- Intermediate Wound Repair (Body)
- Intermediate Wound Repair (Scalp, Body, Arms, Legs)
- Wounds and Injuries
- Complex Wound Closure
- Deep Wound Stitching
- Surgical Wound Repair
- Laceration Repair (Body)
- Surgical Wound Closure (Trunk/Limbs)
- Deep Wound Stitching (Body)
- Surgical Wound Repair (Body)
CPT Codes:
- 12034: Repair, intermediate, wounds of scalp, axillae, trunk and/or extremities (excluding hands and feet); 7.6 cm to 12.5 cm
- 12032: Repair, intermediate, wounds of scalp, axillae, trunk and/or extremities (excluding hands and feet); 2.6 cm to 7.5 cm
- 12035: Repair, intermediate, wounds of scalp, axillae, trunk and/or extremities (excluding hands and feet); 12.6 cm to 20.0 cm
Also known as:
- Biologic Implant for Soft Tissue Reinforcement
- Acellular Dermal Matrix Implant
- Breast Reinforcement Implant
- Trunk Soft Tissue Repair
- Tissue Scaffold Implant
CPT Codes:
- 15777: Implantation of biologic implant (eg, acellular dermal matrix) for soft tissue reinforcement (ie, breast, trunk) (List separately in addition to code for primary procedure)
Also known as:
- Large Malignant Skin Lesion Removal
- Skin Cancer Excision
- Large Malignant Growth Removal
- Wide Excision of Skin Cancer
- Trunk/Limb Skin Cancer Surgery
CPT Codes:
- 11606: Excision, malignant lesion including margins, trunk, arms, or legs; excised diameter over 4.0 cm
Also known as:
- Breast Tissue Expander Placement
- Immediate Breast Implant After Mastectomy
- Breast Reconstruction
- Plastic and Cosmetic Surgery
- Breast Reconstruction with Expanders
- Tissue Expander Surgery (Breast)
- Breast Implant Preparation
- Same-day breast implant
- Mastectomy with immediate implant
- Breast implant during mastectomy
- Immediate breast reconstruction
CPT Codes:
- 19357: Tissue expander placement in breast reconstruction, including subsequent expansion(s)
- 19340: Insertion of breast implant on same day of mastectomy (ie, immediate)
Also known as:
- Modified Radical Mastectomy
- Mastectomy
- Breast Removal with Lymph Node Dissection
- Breast Cancer Surgery
CPT Codes:
- 19307: Mastectomy, modified radical, including axillary lymph nodes, with or without pectoralis minor muscle, but excluding pectoralis major muscle
Also known as:
- Large Benign Skin Lesion Removal
- Benign Skin Growth Excision
- Skin Tumor Removal (Benign)
- Large Skin Lesion Biopsy
CPT Codes:
- 11406: Excision, benign lesion including margins, except skin tag (unless listed elsewhere), trunk, arms or legs; excised diameter over 4.0 cm
Also known as:
- Deep Armpit Lymph Node Biopsy
- Superficial Lymph Node Needle Biopsy
- Biopsy
- Axillary Lymph Node Excision
- Open Axillary Node Biopsy
- Underarm Lymph Node Removal
- Needle Lymph Node Biopsy
- Cervical Lymph Node Biopsy
- Inguinal Lymph Node Biopsy
- Axillary Lymph Node Biopsy
CPT Codes:
- 38525: Biopsy or excision of lymph node(s); open, deep axillary node(s)
- 38505: Biopsy or excision of lymph node(s); by needle, superficial (eg, cervical, inguinal, axillary)
Also known as:
- Sentinel Lymph Node Mapping
- Lymph Node Identification
- Sentinel Node Biopsy (Mapping)
- Dye Injection for Lymph Nodes
CPT Codes:
- 38900: Intraoperative identification (eg, mapping) of sentinel lymph node(s) includes injection of non-radioactive dye, when performed (List separately in addition to code for primary procedure)
Also known as:
- Complete Axillary Lymph Node Removal
- Axillary dissection
- Armpit lymph node surgery
- Lymphadenectomy of armpit
CPT Codes:
- 38745: Axillary lymphadenectomy; complete
Also known as:
- Lymph Node Biopsy
- Biopsy
- Superficial Lymph Node Excision
- Open Lymph Node Biopsy
- Lymph Gland Biopsy
CPT Codes:
- 38500: Biopsy or excision of lymph node(s); open, superficial
Also known as:
- Removal of Large Neck or Chest Tumor
- Large Thigh or Knee Soft Tissue Tumor Removal
- Excision of subcutaneous tumor
- Neck mass removal
- Chest wall tumor surgery
- Thigh Tumor Excision
- Knee Soft Tissue Mass Removal
- Intramuscular Tumor Surgery
CPT Codes:
- 21552: Excision, tumor, soft tissue of neck or anterior thorax, subcutaneous; 3 cm or greater
- 27339: Excision, tumor, soft tissue of thigh or knee area, subfascial (eg, intramuscular); 5 cm or greater
Also known as:
- Removal of Large Soft Tissue Tumor (Back/Flank)
- Subcutaneous Tumor Excision (Back)
- Flank Tumor Removal
- Large Soft Tissue Mass Excision
- Back Tumor Surgery
CPT Codes:
- 21931: Excision, tumor, soft tissue of back or flank, subcutaneous; 3 cm or greater
Does Dr. Cassidy accept my insurance?
Dr. Cassidy accepts most major insurance plans. Important: Please call our office at before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Cassidy accept in Boston, MA?
Dr. Cassidy in Boston, MA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
BCBS Unspecified
Boston Medical Center
Commonwealth Care Alliance
Excellus BlueCross BlueShield
Health Pointe
Medicaid
Medicare
Point32Health
State of Massachusetts
State of Tennessee
View All Insurances
Where is Dr. Cassidy's office located?
Would you like to schedule an appointment with Dr. Michael Cassidy?
Dr. Cassidy has appointments available at his Boston, MA office, as well as 2 other locations. Please select a location, date, and time below.
What is Dr. Cassidy's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Cassidy's National Provider Identifier (NPI) number is 1114186905.
What common questions do patients ask about Dr. Cassidy?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Cassidy
What is Dr. Michael Cassidy's specialty?
Dr. Cassidy is a Surgical Oncologist near Boston, MA. 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. Cassidy to book an appointment today.
Is this Dr. Michael Cassidy affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Cassidy is affiliated with Boston Medical 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
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 Michael Cassidy accepting new patients in Boston, MA?
Yes, Dr. Michael Cassidy is accepting new patients at this time.
Does Dr. Michael Cassidy offer online booking?
Yes, you can use online booking to schedule an appointment with Dr. Cassidy, or contact the office for more information.
How can I make an appointment with Michael Cassidy?
Please contact Dr. Cassidy's office for information regarding telehealth appointment availability or for scheduling assistance.
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