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Dr. Ralph Marcus

Fullerton, CA

Accepting patients

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Marcus, Diagnostic Radiologist in Fullerton, CA?

    Dr. Ralph Marcus is a Diagnostic Radiologist, who primarily practices in Fullerton, CA with 2 additional practice locations. Dr. Marcus is fluent in English, and is currently seeing new patients. Dr. Marcus’s practice accepts Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Marcus’s office at (714) 992-3000.

    What languages does Dr. Marcus speak?

    Dr. Marcus and their clinical team can communicate with patients in the following languages:

    • English

    What conditions does Dr. Marcus treat?

    As a Diagnostic Radiologist, Dr. Marcus 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. Marcus. 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:

    • Widespread Abdominal Pain
    • Right Upper Abdominal Pain
    • Abdominal Pain
    • General stomach pain
    • Overall belly pain
    • Diffuse abdominal pain
    • RUQ pain
    • Pain in upper right stomach
    • Right upper belly pain

    ICD-10 Codes:

    • R1084: Generalized abdominal pain
    • R1011: Right upper quadrant pain

    Also known as:

    • Cough
    • Coughing
    • Persistent cough
    • Chronic cough

    ICD-10 Codes:

    • R059: Cough, unspecified

    Also known as:

    • Headache
    • Head pain
    • Cephalalgia
    • Tension headache

    ICD-10 Codes:

    • R519: Headache, unspecified

    Also known as:

    • Other Abnormal Findings on Lung Scan
    • Unusual Lung Scan Results
    • Atypical Lung Imaging
    • Nonspecific Lung Abnormality

    ICD-10 Codes:

    • R918: Other nonspecific abnormal finding of lung field

    Also known as:

    • Chest Pain
    • Chest discomfort
    • Thoracic pain
    • Upper body pain

    ICD-10 Codes:

    • R079: Chest pain, unspecified

    Also known as:

    • Changes in Mental State
    • Mental Disorder
    • Confusion
    • Disorientation
    • Changes in awareness

    ICD-10 Codes:

    • R4182: Altered mental status, unspecified

    Also known as:

    • Shortness of Breath
    • Breathing Problems
    • Difficulty breathing
    • Breathlessness
    • Dyspnea

    ICD-10 Codes:

    • R0602: Shortness of breath

    Also known as:

    • Neck Pain
    • Neck Injuries and Disorder
    • Cervical Pain
    • Sore Neck
    • Neck Ache

    ICD-10 Codes:

    • M542: Cervicalgia

    Also known as:

    • Vascular Access Device Management
    • Vascular Access Care
    • Port Management
    • Catheter Care

    ICD-10 Codes:

    • Z452: Encounter for adjustment and management of vascular access device

    Also known as:

    • Lobar Pneumonia
    • Pneumonia
    • Lung Lobe Infection
    • Bacterial Pneumonia
    • Severe Pneumonia

    ICD-10 Codes:

    • J181: Lobar pneumonia, unspecified organism

    Also known as:

    • Low Back Pain
    • Back Pain
    • Lumbago
    • Lower Back Ache
    • Backache

    ICD-10 Codes:

    • M5450: Low back pain, unspecified

    Also known as:

    • Pleural Effusion
    • Pleural Disorder
    • Fluid in lungs
    • Water on the lung
    • Fluid around lungs

    ICD-10 Codes:

    • J90: Pleural effusion, not elsewhere classified

    Also known as:

    • Dialysis Catheter Management
    • Dialysis
    • Dialysis catheter adjustment
    • Extracorporeal catheter care
    • Dialysis access maintenance

    ICD-10 Codes:

    • Z4901: Encounter for fitting and adjustment of extracorporeal dialysis catheter

    Also known as:

    • Fluid in Abdomen
    • Liver Disease
    • Ascites
    • Abdominal fluid buildup
    • Peritoneal fluid

    ICD-10 Codes:

    • R188: Other ascites

    Also known as:

    • Ischemic Stroke
    • Brain Attack
    • Cerebral Infarction
    • Brain Ischemia

    ICD-10 Codes:

    • I639: Cerebral infarction, unspecified

    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:

    • Gallstones
    • Cholelithiasis
    • Gallbladder stones
    • Biliary calculi

    ICD-10 Codes:

    • K8020: Calculus of gallbladder without cholecystitis without obstruction

    Also known as:

    • Pelvic and Perineal Pain
    • Pelvic Pain
    • Perineum pain
    • Pelvic floor pain
    • Pain in groin area

    ICD-10 Codes:

    • R102: Pelvic and perineal pain

    Also known as:

    • Gastrointestinal Device Fitting and Adjustment
    • GI Appliance Fitting
    • Digestive Device Adjustment
    • Enteral Device Care

    ICD-10 Codes:

    • Z4659: Encounter for fitting and adjustment of other gastrointestinal appliance and device

    What procedures does Dr. Marcus perform?

    As a Diagnostic Radiologist, Dr. Marcus 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. Marcus. 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:

    • Inserting a Long-Term IV Port (Central Line)
    • Tunneled central venous catheter insertion
    • Subcutaneous port placement
    • Central line with port

    CPT Codes:

    • 36561: Insertion of tunneled centrally inserted central venous access device, with subcutaneous port; age 5 years or older

    Also known as:

    • Long-Term Central Venous Catheter Insertion
    • Central Venous Catheter Insertion (Non-Tunneled)
    • Tunneled central line placement
    • Central venous access device insertion
    • Hickman catheter insertion
    • Broviac catheter insertion
    • Central Line Placement
    • CVC Insertion
    • Temporary Central Line
    • IV Access Catheter

    CPT Codes:

    • 36558: Insertion of tunneled centrally inserted central venous catheter, without subcutaneous port or pump; age 5 years or older
    • 36556: Insertion of non-tunneled centrally inserted central venous catheter; age 5 years or older

    Also known as:

    • Tunneled Central Venous Catheter Removal
    • Central Line Explant
    • Port-a-Cath Removal
    • Implantable Venous Access Device Removal
    • Tunneled Catheter Extraction

    CPT Codes:

    • 36590: Removal of tunneled central venous access device, with subcutaneous port or pump, central or peripheral insertion

    Also known as:

    • Removal of Tunneled Central Venous Catheter
    • Central Line Removal
    • Tunneled Catheter Extraction
    • Venous Access Device Removal

    CPT Codes:

    • 36589: Removal of tunneled central venous catheter, without subcutaneous port or pump

    Also known as:

    • Abdominal Catheter Placement
    • Catheter Placement in Aorta
    • Peritoneal Catheter Insertion
    • Ascites Drainage Catheter
    • Intraperitoneal Dialysis Catheter
    • Abdominal Fluid Drainage Tube
    • Aortic catheterization
    • Aorta access procedure
    • Main artery catheter insertion

    CPT Codes:

    • 49418: Insertion of tunneled intraperitoneal catheter (eg, dialysis, intraperitoneal chemotherapy instillation, management of ascites), complete procedure, including imaging guidance, catheter placement, contrast injection when performed, and radiological supervision and interpretation, percutaneous
    • 36200: Introduction of catheter, aorta

    Also known as:

    • Dialysis Circuit Angioplasty with Balloon
    • Dialysis Fistula Angioplasty
    • Dialysis Graft Angioplasty
    • Peripheral Dialysis Segment Angioplasty

    CPT Codes:

    • 36902: Introduction of needle(s) and/or catheter(s), dialysis circuit, with diagnostic angiography of the dialysis circuit, including all direct puncture(s) and catheter placement(s), injection(s) of contrast, all necessary imaging from the arterial anastomosis and adjacent artery through entire venous outflow including the inferior or superior vena cava, fluoroscopic guidance, radiological supervision and interpretation and image documentation and report; with transluminal balloon angioplasty, peripheral dialysis segment, including all imaging and radiological supervision and interpretation necessary to perform the angioplasty

    Also known as:

    • Dialysis Access Balloon Angioplasty
    • Dialysis Fistula Angioplasty
    • Dialysis Graft Angioplasty
    • Central Dialysis Segment Angioplasty
    • AV Fistula Angioplasty

    CPT Codes:

    • 36907: Transluminal balloon angioplasty, central dialysis segment, performed through dialysis circuit, including all imaging and radiological supervision and interpretation required to perform the angioplasty (List separately in addition to code for primary procedure)

    Also known as:

    • Central Venous Catheter Replacement
    • Tunneled Catheter Exchange
    • Central Line Replacement
    • IV Catheter Change

    CPT Codes:

    • 36581: Replacement, complete, of a tunneled centrally inserted central venous catheter, without subcutaneous port or pump, through same venous access

    Also known as:

    • Vena Cava Filter Removal
    • IVC Filter Retrieval
    • Endovascular Filter Removal
    • Blood Clot Filter Removal

    CPT Codes:

    • 37193: Retrieval (removal) of intravascular vena cava filter, endovascular approach including vascular access, vessel selection, and radiological supervision and interpretation, intraprocedural roadmapping, and imaging guidance (ultrasound and fluoroscopy), when performed

    Also known as:

    • Abdominal Fluid Drainage with Imaging Guidance
    • Image-Guided Abdominal Fluid Drainage
    • Draining a Lump or Collection of Fluid
    • Guided Abdominal Paracentesis
    • Ascites Drainage with Ultrasound
    • Fluid Removal from Belly
    • Percutaneous fluid drainage
    • Abscess drainage with imaging
    • Peritoneal fluid aspiration
    • Abscess Aspiration
    • Cyst Drainage
    • Hematoma Puncture
    • Bulla Aspiration

    CPT Codes:

    • 49083: Abdominal paracentesis (diagnostic or therapeutic); with imaging guidance
    • 49406: Image-guided fluid collection drainage by catheter (eg, abscess, hematoma, seroma, lymphocele, cyst); peritoneal or retroperitoneal, percutaneous
    • 10160: Puncture aspiration of abscess, hematoma, bulla, or cyst

    Also known as:

    • Lung or Chest Biopsy
    • Ultrasound-Guided Fine Needle Biopsy
    • Liver Biopsy (Needle)
    • Muscle Needle Biopsy
    • Needle Biopsy of Salivary Gland
    • Kidney Biopsy
    • Biopsy
    • Ultrasound
    • Percutaneous lung biopsy
    • Mediastinum core needle biopsy
    • Image-guided lung biopsy
    • FNA Biopsy with Ultrasound
    • Image-Guided Biopsy
    • Fine Needle Aspiration
    • First Lesion Biopsy
    • Percutaneous liver biopsy
    • Needle liver sample
    • Liver tissue biopsy
    • Liver needle aspiration
    • Percutaneous Muscle Biopsy
    • Muscle Tissue Sample
    • Fine needle aspiration salivary gland
    • Parotid gland biopsy
    • Renal biopsy
    • Percutaneous kidney biopsy
    • Needle kidney biopsy

    CPT Codes:

    • 32408: Core needle biopsy, lung or mediastinum, percutaneous, including imaging guidance, when performed
    • 10005: Fine needle aspiration biopsy, including ultrasound guidance; first lesion
    • 47000: Biopsy of liver, needle; percutaneous
    • 20206: Biopsy, muscle, percutaneous needle
    • 42400: Biopsy of salivary gland; needle
    • 50200: Renal biopsy; percutaneous, by trocar or needle

    Also known as:

    • Kidney Drainage Tube Placement
    • Percutaneous Nephrostomy
    • Nephrostomy Catheter Insertion
    • Kidney Drainage Catheter

    CPT Codes:

    • 50432: Placement of nephrostomy catheter, percutaneous, including diagnostic nephrostogram and/or ureterogram when performed, imaging guidance (eg, ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation

    Also known as:

    • Exchange of Kidney Drainage Catheter
    • Nephrostomy tube exchange
    • Percutaneous nephrostomy catheter change
    • Kidney drainage tube replacement
    • Nephrostogram with catheter exchange

    CPT Codes:

    • 50435: Exchange nephrostomy catheter, percutaneous, including diagnostic nephrostogram and/or ureterogram when performed, imaging guidance (eg, ultrasound and/or fluoroscopy) and all associated radiological supervision and interpretation

    Also known as:

    • Bone Marrow Biopsy and Aspiration
    • Biopsy
    • Bone Marrow Tests
    • Bone Marrow Exam
    • Bone Marrow Sample Collection
    • Diagnostic Bone Marrow Procedure

    CPT Codes:

    • 38222: Diagnostic bone marrow; biopsy(ies) and aspiration(s)

    Also known as:

    • Superficial Lymph Node Needle Biopsy
    • Biopsy
    • Needle Lymph Node Biopsy
    • Cervical Lymph Node Biopsy
    • Inguinal Lymph Node Biopsy
    • Axillary Lymph Node Biopsy

    CPT Codes:

    • 38505: Biopsy or excision of lymph node(s); by needle, superficial (eg, cervical, inguinal, axillary)

    Also known as:

    • Radioactive Tracer Injection for Sentinel Lymph Node Biopsy
    • Sentinel Node Mapping Injection
    • Lymph Node Tracer Injection
    • Radioactive Dye for Lymph Nodes
    • Sentinel Lymph Node Identification

    CPT Codes:

    • 38792: Injection procedure; radioactive tracer for identification of sentinel node

    Also known as:

    • Thyroid Core Needle Biopsy
    • Percutaneous Thyroid Biopsy
    • Thyroid Nodule Biopsy
    • Needle Biopsy of Thyroid

    CPT Codes:

    • 60100: Biopsy thyroid, percutaneous core needle

    Also known as:

    • Fluid Removal from Lung Area with Imaging Guidance
    • Thoracentesis
    • Pleural Fluid Aspiration
    • Lung Tap
    • Fluid Drainage from Chest

    CPT Codes:

    • 32555: Thoracentesis, needle or catheter, aspiration of the pleural space; with imaging guidance

    Also known as:

    • Tunneled Pleural Catheter Insertion
    • Lung Fluid Drainage with Catheter
    • Indwelling Pleural Catheter Placement
    • Chest Drainage Catheter
    • Permanent Pleural Catheter
    • Percutaneous Pleural Drainage
    • Chest Tube Insertion
    • Imaging-Guided Pleural Drain

    CPT Codes:

    • 32550: Insertion of indwelling tunneled pleural catheter with cuff
    • 32557: Pleural drainage, percutaneous, with insertion of indwelling catheter; with imaging guidance

    Also known as:

    • Percutaneous Gastrostomy Tube Insertion
    • PEG Tube Placement
    • G-Tube Insertion
    • Feeding Tube Placement (Stomach)

    CPT Codes:

    • 49440: Insertion of gastrostomy tube, percutaneous, under fluoroscopic guidance including contrast injection(s), image documentation and report

    Also known as:

    • Needle Biopsy of Abdominal or Pelvic Mass
    • Percutaneous Abdominal Biopsy
    • Retroperitoneal Mass Biopsy
    • Abdominal Needle Biopsy

    CPT Codes:

    • 49180: Biopsy, abdominal or retroperitoneal mass, percutaneous needle

    Also known as:

    • Stomach or Colon Feeding Tube Replacement
    • Gastrostomy Tube Change
    • Cecostomy Tube Replacement
    • Percutaneous Feeding Tube Exchange

    CPT Codes:

    • 49450: Replacement of gastrostomy or cecostomy (or other colonic) tube, percutaneous, under fluoroscopic guidance including contrast injection(s), image documentation and report

    Also known as:

    • Joint or Bursa Injection/Fluid Removal
    • Arthrocentesis
    • Major Joint Aspiration
    • Bursa Injection
    • Joint Fluid Removal

    CPT Codes:

    • 20610: Arthrocentesis, aspiration and/or injection, major joint or bursa (eg, shoulder, hip, knee, subacromial bursa); without ultrasound guidance

    Also known as:

    • Injection for Wrist Arthrography
    • Diagnostic Imaging
    • Wrist Joint Injection for Imaging
    • Contrast Injection for Wrist Scan
    • Arthrography Prep (Wrist)

    CPT Codes:

    • 25246: Injection procedure for wrist arthrography

    Does Dr. Marcus accept my insurance?

    Dr. Marcus accepts most major insurance plans. Important: Please call our office at (714) 992-3000 before your appointment to verify that your specific plan and network are accepted.

    What insurance plans does Dr. Marcus accept in Fullerton, CA?

    Dr. Marcus in Fullerton, 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

    • CalOptima

    • Centene

    • City of Los Angeles

    • Crown Cork and Seal Company

    • Kaiser Permanente

    • Monarch HealthCare

    • St. Joseph Health System (CA)

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Marcus' office located?

    Dr. Ralph Marcus' Primary Practice

    2141 N Harbor Blvd Ste 16000

    Fullerton, CA 92835

    (714) 992-3000

    Get Directions

    Dr. Ralph Marcus' Practice 2

    1514 Valley Vista Dr

    Diamond Bar, CA 91765

    Get Directions

    Dr. Ralph Marcus' Practice 3

    1835 Sunny Crest Dr

    Fullerton, CA 92835

    Get Directions

    What is Dr. Marcus's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.

    Dr. Marcus's National Provider Identifier (NPI) number is 1346566056.

    What common questions do patients ask about Dr. Marcus?

    Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Marcus

    What is Dr. Ralph Marcus's specialty?

    Dr. Marcus is a Diagnostic Radiologist near Fullerton, CA. A radiologist is a medical doctor who specializes in using imaging technologies to diagnose, manage, and treat various medical conditions. Radiologists typically focus on Diagnostic Radiology, Interventional Radiology, or Radiation Oncology, and may also obtain certifications in a range of subspecialties, such as neuroradiology, musculoskeletal radiology, or pediatric radiology. Additionally, board certifications are available in Medical Physics, which ensures the safe and effective use of radiation in imaging and treatment. Radiologists collaborate with other healthcare professionals to interpret imaging results and help guide patient care decisions. Contact Dr. Marcus to book an appointment today.

    Is this Dr. Ralph Marcus affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Marcus is affiliated with Providence St. Jude Medical Center, Providence St. Jude Medical Center, Kaiser Permanente Orange County - Anaheim Medical Center, UCI Medical Center, PIH Health Whittier Hospital, AHMC Anaheim Regional 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

    Where can I learn more about Diagnostic Radiologist?

    Explore Diagnostic Radiologist 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 Ralph Marcus accepting new patients in Fullerton, CA?

    Yes, Dr. Ralph Marcus is accepting new patients at this time.

    Does Dr. Ralph Marcus offer online booking?

    Please contact Dr. Marcus's office at (714) 992-3000 for information about online booking, telehealth, or to schedule an appointment.

    How can I make an appointment with Ralph Marcus?

    Please contact Dr. Marcus's office at (714) 992-3000 for information regarding telehealth appointment availability or for scheduling assistance.

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