NN
14 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Nguyen, Surgeon in San Marcos, CA?
Dr. Nhien Nguyen, MD is a Surgeon, who primarily practices in San Marcos, CA with 2 additional practice locations. He has been practicing for over 14 years. Dr. Nguyen is fluent in English, and is currently seeing new patients. Dr. Nguyen’s practice accepts Kaiser Permanente, Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Nguyen’s office.
What languages does Dr. Nguyen speak?
Dr. Nguyen and their clinical team can communicate with patients in the following languages:
English
What conditions does a Surgeon like Dr. Nguyen typically treat?
As a Surgeon, Dr. Nguyen 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. Nguyen. 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:
- Groin Hernia (One Side)
- Umbilical Hernia
- Hernia
- Inguinal Hernia
- Unilateral Inguinal Hernia
- Single Groin Hernia
- Hernia in One Groin
- Belly Button Hernia
- Navel Hernia
- Umbilical Rupture
ICD-10 Codes:
- K4090: Unilateral inguinal hernia, without obstruction or gangrene, not specified as recurrent
- K429: Umbilical hernia without obstruction or gangrene
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:
- Gallstones
- Cholelithiasis
- Gallbladder stones
- Biliary calculi
ICD-10 Codes:
- K8020: Calculus of gallbladder without cholecystitis without obstruction
Also known as:
- Breast Cancer
- Mammary cancer
- Breast carcinoma
- Breast tumor
ICD-10 Codes:
- C50912: Malignant neoplasm of unspecified site of left female breast
What procedures does a Surgeon like Dr. Nguyen typically perform?
As a Surgeon, Dr. Nguyen 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. Nguyen. 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:
- Inguinal Hernia Repair (Adults and Children 5+)
- Groin Hernia Surgery
- Reducible Inguinal Hernia Repair
- First Inguinal Hernia Fix
- Adult Inguinal Hernia Surgery
CPT Codes:
- 49505: Repair initial inguinal hernia, age 5 years or older; reducible
Also known as:
- Deep Armpit Lymph Node Biopsy
- Biopsy
- Axillary Lymph Node Excision
- Open Axillary Node Biopsy
- Underarm Lymph Node Removal
CPT Codes:
- 38525: Biopsy or excision of lymph node(s); open, deep axillary node(s)
Also known as:
- Partial Mastectomy
- Mastectomy
- Lumpectomy
- Breast conserving surgery
- Quadrantectomy
- Segmentectomy
CPT Codes:
- 19301: Mastectomy, partial (eg, lumpectomy, tylectomy, quadrantectomy, segmentectomy);
Does Dr. Nguyen accept my insurance?
Dr. Nguyen 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. Nguyen accept in San Marcos, CA?
Dr. Nguyen in San Marcos, 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
Elevance Health Inc. (formerly Anthem)
Kaiser Permanente
Medicare
Other Health Care Provider
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Nguyen's office located?
What is Dr. Nguyen's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Nguyen's National Provider Identifier (NPI) number is 1518144609.
What common questions do patients ask about Dr. Nguyen?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Nguyen
What is Dr. Nhien Nguyen's specialty?
Dr. Nguyen is a Surgeon near San Marcos, CA.
What does a Surgeon do?
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.
Is this Dr. Nhien Nguyen affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Nguyen is affiliated with Kaiser Permanente San Diego Medical Center, Palomar Medical Center Poway, Kaiser Permanente Baldwin Park Medical Center 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
When to see a Surgeon?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Surgeon. 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 Nhien Nguyen accepting new patients in San Marcos, CA?
Yes, Dr. Nhien Nguyen is accepting new patients at this time.
Does Dr. Nhien Nguyen offer online booking?
Please contact Dr. Nguyen's office for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Nhien Nguyen?
Please contact Dr. Nguyen's office for information regarding telehealth appointment availability or for scheduling assistance.
Other Surgeon Near San Marcos, CA

Vascular Surgeon
Dr. Edward Plecha, MD is a Vascular Surgeon, who primarily practices in San Diego, CA with 2 additional practice locations. He is board certified.
San Diego, CA

Surgeon
Dr. Michael Ditmars, MD is a Surgeon, who primarily practices in San Marcos, CA with 2 additional practice locations. He is board certified.
San Marcos, CA
JP
Surgeon
Dr. Jaclyn Parker, MD is a Surgeon, who primarily practices in San Diego, CA with 2 additional practice locations. She has been practicing for over 15 years.
San Diego, CA