27 Years of Experience
Accepting patients
Affiliated with a Castle Connolly Top Hospital
Who is Dr. Shields, Internist in Laguna Hills, CA?
Dr. Mark Shields, MD is an Internist, who primarily practices in Laguna Hills, CA. He has been practicing for over 27 years and is board certified. Dr. Shields graduated from University of California and completed his residency at Huntington Mem Hosp, Internal Medicine. He is a member of the MemorialCare Physician Society. Dr. Shields is fluent in English and Spanish, and is currently seeing new patients. Dr. Shields’s practice accepts Medicare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Shields’s office at (949) 465-8155.
Where did Dr. Shields go to medical school and complete their residency?
Residency: Huntington Mem Hosp, Internal Medicine | Huntington Memorial Hospital | Huntington Memorial Hospital | Huntington Memorial Hospital Program
Medical School: University of Southern Ca Sch of Med, Los Angeles Ca | University of California
Is Dr. Shields board certified as an Internist?
Yes, Dr. Mark Shields, MD is board certified by the American Board of Internal Medicine
What languages does Dr. Shields speak?
Dr. Shields and their clinical team can communicate with patients in the following languages:
English
Spanish
What conditions does an Internist like Dr. Shields typically treat?
As an Internist, Dr. Shields 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. Shields. 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:
- High Blood Pressure
- Hypertension
- Primary Hypertension
- Essential Hypertension
ICD-10 Codes:
- I10: Essential (primary) hypertension
Also known as:
- Routine Adult Health Checkup
- Health Checkup
- Adult physical exam
- Annual wellness visit for adults
- General adult medical exam
ICD-10 Codes:
- Z0000: Encounter for general adult medical examination without abnormal findings
Also known as:
- General Disorder Screening
- Health Screening
- General Health Check
- Disease Screening
- Medical Disorder Screening
ICD-10 Codes:
- Z1389: Encounter for screening for other disorder
Also known as:
- Diabetes Complicationss
- Diabetes Type 2
- Type 2 diabetes
- Diabetes Mellitus Complications
- Diabetes Related Health Problems
- Advanced Diabetes
ICD-10 Codes:
- E1169: Type 2 diabetes mellitus with other specified complication
Also known as:
- Immunization Visit
- Vaccines
- Vaccination appointment
- Shot visit
- Immunization encounter
ICD-10 Codes:
- Z23: Encounter for immunization
Also known as:
- Other High Cholesterol
- Cholesterol
- Triglycerides
- Other hyperlipidemia
- Other high lipids
- Dyslipidemia
ICD-10 Codes:
- E7849: Other hyperlipidemia
Also known as:
- High Cholesterol
- Cholesterol
- Triglycerides
- Hyperlipidemia
- High lipids
- Dyslipidemia
ICD-10 Codes:
- E785: Hyperlipidemia, unspecified
What procedures does an Internist like Dr. Shields typically perform?
As an Internist, Dr. Shields 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. Shields. 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:
- Colonoscopy with Polyp Removal
- Colonoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy
- Colon Biopsy
- Large Intestine Scope
- Colorectal Cancer Screening
CPT Codes:
- 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
- 45380: Colonoscopy, flexible; with biopsy, single or multiple
Also known as:
- Upper Endoscopy with Biopsy
- Biopsy
- Endoscopy
- EGD with Biopsy
- Gastroscopy with Biopsy
- Esophagogastroduodenoscopy with Biopsy
CPT Codes:
- 43239: Esophagogastroduodenoscopy, flexible, transoral; with biopsy, single or multiple
Also known as:
- Cataract Removal with Lens Implant
- Extracapsular cataract extraction
- Phacoemulsification
- IOL implantation
CPT Codes:
- 66984: Extracapsular cataract removal with insertion of intraocular lens prosthesis (1 stage procedure), manual or mechanical technique (eg, irrigation and aspiration or phacoemulsification); without endoscopic cyclophotocoagulation
Does Dr. Shields accept my insurance?
Dr. Shields accepts most major insurance plans. Important: Please call our office at (949) 465-8155 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Shields accept in Laguna Hills, CA?
Dr. Shields in Laguna Hills, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Alignment Healthcare
All Other Third Party
Blue Cross Blue Shield of Michigan
Centene Corporation
Elevance Health Inc. (formerly Anthem)
Humana
Medicare
Monarch HealthCare
UnitedHealth Group
Unknown
View All Insurances
Where is Dr. Shields' office located?
Dr. Mark Shields' Primary Practice
24221 Calle de la Louisa Ste 200
Laguna Hills, CA 92653
(949) 465-8155
Recognitions
Memberships & Associations
MemorialCare Physician Society
Member
What is Dr. Shields's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Shields's National Provider Identifier (NPI) number is 1366411555.
What common questions do patients ask about Dr. Shields?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Shields
What is Dr. Mark Shields's specialty?
Dr. Shields is a Internist near Laguna Hills, CA.
What does an Internist do?
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Is this Dr. Mark Shields affiliated with a ranked Castle Connolly Top Hospital?
Yes, Dr. Shields is affiliated with Providence Mission Hospital Mission Viejo, Hoag Hospital Newport Beach, Uci 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 an Internist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see an Internist. 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 Mark Shields accepting new patients in Laguna Hills, CA?
Yes, Dr. Mark Shields is accepting new patients at this time.
Does Dr. Mark Shields offer online booking?
Please contact Dr. Shields's office at (949) 465-8155 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Mark Shields?
Please contact Dr. Shields's office at (949) 465-8155 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Mark Shields have?
Dr. Mark Shields is certified by the American Board of Internal Medicine.
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