About United Breast & Endocrine Surgery
United Breast & Endocrine Surgery is proud to provide unparalleled specialty surgical care to all patients 14 years of age and older in need of breast, thyroid and parathyroid surgery. With offices in Riverside County and San Diego County, our team takes great pride in offering specialty care to the communities of Southern California.
We are excited to announce our practice is now open and scheduling Endocrine Surgery consults in Murrieta. We anticipate our Breast Surgery division will launch in Fall/Winter 2025. Schedule your Endocrine Surgery consult today!
Our Mission
We are dedicated to providing unparalleled comprehensive, cutting-edge specialty surgical care to all patients in need of breast and endocrine surgery. Our practice strives to demonstrate compassion while maintaining high reliability as we aim to fulfill a superior patient-centered experience. We thank you for the opportunity to be a part of your healthcare team.
Dr. Sinclair treats patients 14 years of age and older.
Conditions Treated
- Benign Breast Masses
- Breast Cysts
- Breast Abscesses/Infections
- Granulomatous Mastitis
- Nipple Discharge
- Nipple Lesions
- BRCA1/2 and Other Genetic Mutations Associated with Increased Breast Cancer Risk
- Breast Papillomas
- Atypical and Precancerous Breast Lesions
- Breast Cancer
- Male Breast Cancer
- Benign Thyroid Nodules
- Thyroid Goiters
- Hyperthyroidism
- Graves’ Disease
- Thyroid Cancer
- Multiple Endocrine Neoplasia
- Cowden Syndrome
- Hyperparathyroidism (Primary, Secondary and Tertiary)
- Parathyroid Cancer
Procedures & Surgeries Offered
Our team is proud to offer the following procedures and surgeries of the breast, thyroid and parathyroid:
- Breast Ultrasound
- Breast Mass Excision
- Surgical Breast Biopsy
- Aspiration/Drainage of Breast Abscesses
- Partial Mastectomy/Breast Conservation Surgery
- Mastectomy
- Nipple-Sparing Mastectomy
- Prophylactic Mastectomy
- Axillary Lymph Node Biopsy
- Axillary Lymph Node Dissection
- Neck Ultrasound
- Ultrasound-Guided Thyroid and Cervical Lymph Node Biopsy
- Thyroid Cyst Aspiration
- Thyroid Lobectomy
- Complete Thyroidectomy
- Cervical Lymph Node Dissection
- Focused Parathyroidectomy
- 4-Gland Parathyroid Exploration
- Parathyroid Auto-Transplantation
Our Breast & Endocrine Surgery Team
Tiffany J. Sinclair, MD, FACS
Patricia Park, MD
Our Locations
Request an Appointment
To request an appointment, please fill out the form below. You can also schedule an appt online via the button below with select PPO, Medicare and Tricare insurances. Thank you for the opportunity to be a part of your healthcare team!
Breast & Endocrine Surgery Patient Resources
Dr. Sinclair believes in empowering her patients through knowledge and education. Please feel free to download the below patient resources!