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Dr. Marco Paez, MD

Murrieta, CA

Accepting patients
Online booking

Affiliated with a Castle Connolly Top Hospital

    Who is Dr. Paez, Gastroenterologist in Murrieta, CA?

    Dr. Marco Paez, MD is a Gastroenterologist, who primarily practices in Murrieta, CA with 2 additional practice locations. Dr. Paez is fluent in English and Spanish, and is currently seeing new patients. Dr. Paez’s practice accepts Cigna, Kaiser Permanente, Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Paez’s office.

    What languages does Dr. Paez speak?

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

    • English

    • Spanish

    What conditions does Dr. Paez treat?

    As a Gastroenterologist, Dr. Paez 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. Paez. 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:

    • Colon Cancer Screening
    • Health Screening
    • Colorectal Cancer Screening (PDQ®)
    • Screening Tests to Detect Colorectal Cancer and Polyps
    • Tests to Detect Colorectal Cancer and Polyps
    • Colorectal Cancer Screening
    • Colonoscopy Screening
    • Bowel Cancer Screening

    ICD-10 Codes:

    • Z1211: Encounter for screening for malignant neoplasm of colon

    Also known as:

    • Upper Middle Abdominal Pain
    • Abdominal Pain
    • Epigastric pain
    • Pain below breastbone
    • Upper stomach pain
    • Stomach Ache
    • Belly Pain
    • Stomach Pain

    ICD-10 Codes:

    • R1013: Epigastric pain
    • R109: Unspecified abdominal pain

    Also known as:

    • Dark, Tarry Stools (Melena)
    • Gastrointestinal Bleeding
    • Melena
    • Black Stools
    • Upper GI Bleed Signs

    ICD-10 Codes:

    • K921: Melena

    Also known as:

    • Acid Reflux
    • GERD
    • Acid Reflux (GER & GERD) in Adults
    • Acid Reflux (GER & GERD) in Children
    • Acid Reflux (GER & GERD) in Infants
    • Gastroesophageal Reflux
    • Heartburn
    • Indigestion

    ICD-10 Codes:

    • K219: Gastro-esophageal reflux disease without esophagitis

    Also known as:

    • Benign Tumor
    • Non-cancerous growth
    • Benign neoplasm
    • Non-malignant tumor

    ICD-10 Codes:

    • D369: Benign neoplasm, unspecified site

    Also known as:

    • Colon Polyps
    • Colonic Polyps
    • Colorectal Polyps
    • Intestinal Polyps
    • Bowel Polyps

    ICD-10 Codes:

    • Z860100: Personal history of colon polyps, unspecified
    • Z86010: Personal history of colon polyps

    Also known as:

    • First Degree Hemorrhoids
    • Second Degree Hemorrhoids
    • Hemorrhoids
    • Internal hemorrhoids
    • Grade 1 hemorrhoids
    • Mild hemorrhoids
    • Internal hemorrhoids that prolapse
    • Grade 2 hemorrhoids
    • Moderate hemorrhoids

    ICD-10 Codes:

    • K640: First degree hemorrhoids
    • K641: Second degree hemorrhoids

    Also known as:

    • Abnormal Bowel Movements
    • Bowel Movement
    • Unusual stool
    • Changes in poop
    • Fecal changes

    ICD-10 Codes:

    • R195: Other fecal abnormalities

    Also known as:

    • Stomach Inflammation
    • Stomach Disorder
    • Gastritis & Gastropathy
    • Gastritis
    • Inflamed stomach lining
    • Stomach lining inflammation

    ICD-10 Codes:

    • K2970: Gastritis, unspecified, without bleeding

    Also known as:

    • Anemia
    • Low Red Blood Cell Count
    • Low Hemoglobin
    • Iron deficiency

    ICD-10 Codes:

    • D649: Anemia, unspecified

    Also known as:

    • Diaphragmatic Hernia
    • Hernia
    • Hiatal Hernia
    • Hernia of the Diaphragm

    ICD-10 Codes:

    • K449: Diaphragmatic hernia without obstruction or gangrene

    Also known as:

    • Throat and Esophagus Swallowing Difficulty
    • Swallowing Disorder
    • Pharyngoesophageal dysphagia
    • Trouble swallowing in throat
    • Esophageal swallowing problems

    ICD-10 Codes:

    • R1314: Dysphagia, pharyngoesophageal phase

    Also known as:

    • Colon Polyps
    • Colonic Polyps
    • Colorectal polyps
    • Bowel polyps
    • Intestinal polyps

    ICD-10 Codes:

    • K635: Polyp of colon

    Also known as:

    • Constipation
    • Difficulty Passing Stool
    • Infrequent Bowel Movements
    • Hard Stools

    ICD-10 Codes:

    • K5909: Other constipation

    Also known as:

    • Large Intestine Diverticulosis
    • Diverticulosis and Diverticulitis
    • Diverticular Disease
    • Colon Diverticula
    • Pockets in the Colon

    ICD-10 Codes:

    • K5730: Diverticulosis of large intestine without perforation or abscess without bleeding

    Also known as:

    • Cirrhosis
    • Liver scarring
    • End-stage liver disease
    • Chronic liver failure

    ICD-10 Codes:

    • K7460: Unspecified cirrhosis of liver

    Also known as:

    • Family History of Digestive Organ Cancer
    • Cancer
    • Family History
    • Genetic risk for gastrointestinal cancer
    • Family history of GI cancer
    • Hereditary digestive cancer

    ICD-10 Codes:

    • Z800: Family history of malignant neoplasm of digestive organs

    What procedures does Dr. Paez perform?

    As a Gastroenterologist, Dr. Paez 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. Paez. 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:

    • Colonoscopy with Biopsy
    • Diagnostic Colonoscopy with Biopsy
    • Colonoscopy with Polyp Removal
    • Colonoscopy with Tissue Removal
    • Colonoscopy with Bleeding Control
    • Colonoscopy with Endoscopic Ultrasound
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy
    • Colon Biopsy
    • Large Intestine Scope
    • Colorectal Cancer Screening
    • Colon Exam with Biopsy
    • Lower Endoscopy
    • Colon Cancer Screening
    • Flexible Colonoscopy with Polypectomy
    • Colon Polyp Removal
    • Colorectal Lesion Excision
    • Flexible colonoscopy with EMR
    • Endoscopic mucosal resection (colon)
    • Colon polyp removal during colonoscopy
    • Endoscopic Hemostasis
    • Colonoscopy for Bleeding
    • EUS Colonoscopy
    • Endoscopic Ultrasound of Colon
    • Flexible Colonoscopy with EUS
    • Flexible Colonoscopy with Biopsy
    • Colorectal Polyp Removal
    • Hot Biopsy Colonoscopy

    CPT Codes:

    • 45380: Colonoscopy, flexible; with biopsy, single or multiple
    • 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45385: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique
    • 45390: Colonoscopy, flexible; with endoscopic mucosal resection
    • 45382: Colonoscopy, flexible; with control of bleeding, any method
    • 45391: Colonoscopy, flexible; with endoscopic ultrasound examination limited to the rectum, sigmoid, descending, transverse, or ascending colon and cecum, and adjacent structures
    • 45384: Colonoscopy, flexible; with removal of tumor(s), polyp(s), or other lesion(s) by hot biopsy forceps

    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:

    • Colonoscopy with Injections
    • EGD with Endoscopic Ultrasound
    • Diagnostic Upper Endoscopy with Biopsy
    • Flexible Sigmoidoscopy with Endoscopic Ultrasound
    • Flexible Sigmoidoscopy with Biopsy
    • Colonoscopy
    • Colorectal Cancer Screening Tests
    • Flexible Colonoscopy with Injection
    • Colon Scope with Medication
    • Therapeutic Colonoscopy
    • Upper GI Endoscopy with Ultrasound
    • EUS (Endoscopic Ultrasound)
    • Esophagus, Stomach, Duodenum Ultrasound
    • EGD with Biopsy
    • Esophagogastroduodenoscopy
    • Upper GI Endoscopy
    • Stomach Scope with Sample
    • Sigmoidoscopy with EUS
    • Lower Endoscopy with Ultrasound
    • Rectum and Lower Colon Exam with Ultrasound
    • Sigmoid Colon Scope with Biopsy
    • Lower Endoscopy with Tissue Sample
    • Flexible Sigmoidoscopy and Biopsy
    • Rectum and Lower Colon Exam

    CPT Codes:

    • 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
    • 43237: Esophagogastroduodenoscopy, flexible, transoral; with endoscopic ultrasound examination limited to the esophagus, stomach or duodenum, and adjacent structures
    • 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
    • 45341: Sigmoidoscopy, flexible; with endoscopic ultrasound examination
    • 45331: Sigmoidoscopy, flexible; with biopsy, single or multiple

    Also known as:

    • Upper Endoscopy with Ultrasound (EUS)
    • Upper Endoscopy with Polyp Removal
    • EGD with endoscopic ultrasound
    • Esophageal ultrasound
    • Stomach ultrasound endoscopy
    • Duodenal ultrasound endoscopy
    • EGD with Polypectomy
    • Esophagus, Stomach, Duodenum Scope with Removal
    • Flexible Endoscopy Tumor Excision

    CPT Codes:

    • 43259: Esophagogastroduodenoscopy, flexible, transoral; with endoscopic ultrasound examination, including the esophagus, stomach, and either the duodenum or a surgically altered stomach where the jejunum is examined distal to the anastomosis
    • 43251: Esophagogastroduodenoscopy, flexible, transoral; with removal of tumor(s), polyp(s), or other lesion(s) by snare technique

    Also known as:

    • Upper GI Endoscopy with Ultrasound Biopsy
    • Biopsy
    • Endoscopy
    • Ultrasound
    • EGD with EUS-FNA
    • Endoscopic Ultrasound Biopsy
    • Esophageal/Stomach Biopsy

    CPT Codes:

    • 43238: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic ultrasound-guided intramural or transmural fine needle aspiration/biopsy(s), (includes endoscopic ultrasound examination limited to the esophagus, stomach or duodenum, and adjacent structures)

    Also known as:

    • Upper Endoscopy with Ultrasound and Biopsy
    • Biopsy
    • Endoscopy
    • Ultrasound
    • EGD with Endoscopic Ultrasound Biopsy
    • Transoral EUS-FNA
    • Esophagogastroduodenoscopy with Biopsy

    CPT Codes:

    • 43242: Esophagogastroduodenoscopy, flexible, transoral; with transendoscopic ultrasound-guided intramural or transmural fine needle aspiration/biopsy(s) (includes endoscopic ultrasound examination of the esophagus, stomach, and either the duodenum or a surgically altered stomach where the jejunum is examined distal to the anastomosis)

    Also known as:

    • Flexible Sigmoidoscopy
    • Colorectal Cancer Screening Tests
    • Sigmoidoscopy
    • Lower colon exam
    • Flexible colon scope
    • Rectum and lower colon check

    CPT Codes:

    • 45330: Sigmoidoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)

    Also known as:

    • ERCP with Gallstone Removal
    • ERCP
    • Endoscopic Gallstone Removal
    • Biliary Duct Stone Removal
    • Pancreatic Duct Cleaning

    CPT Codes:

    • 43264: Endoscopic retrograde cholangiopancreatography (ERCP); with removal of calculi/debris from biliary/pancreatic duct(s)

    Also known as:

    • ERCP with Bile or Pancreatic Duct Stent Removal
    • Endoscopic Retrograde Cholangiopancreatography
    • Bile Duct Stent Removal
    • Pancreatic Duct Foreign Body Removal
    • ERCP Stone Removal

    CPT Codes:

    • 43275: Endoscopic retrograde cholangiopancreatography (ERCP); with removal of foreign body(s) or stent(s) from biliary/pancreatic duct(s)

    Does Dr. Paez accept my insurance?

    Dr. Paez 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. Paez accept in Murrieta, CA?

    Dr. Paez in Murrieta, CA accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.

    Top Insurances

    • Alignment Health Plan

    • All Other Third Party

    • Blue Shield of California

    • Centene

    • Crown Cork and Seal Company

    • CVS Health (formerly Aetna)

    • Inland Empire

    • Kaiser Permanente

    • OptumRx

    • UnitedHealthcare

    View All Insurances

    Where is Dr. Paez's office located?

    Dr. Marco Paez's Primary Practice

    40663 Murrieta Hot Springs Rd Ste C1

    Murrieta, CA 92562

    Get Directions

    Dr. Marco Paez's Practice 2

    6900 Brockton Ave Ste 100

    Riverside, CA 92506

    Get Directions

    Dr. Marco Paez's Practice 3

    2250 S Main St Ste 205

    Corona, CA 92882

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    Would you like to schedule an appointment with Dr. Marco Paez?

    Dr. Paez has appointments available at his Murrieta, CA office, as well as 2 other locations. Please select a location, date, and time below.

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

    Dr. Paez's National Provider Identifier (NPI) number is 1902167695.

    What common questions do patients ask about Dr. Paez?

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

    What is Dr. Marco Paez's specialty?

    Dr. Paez is a Gastroenterologist near Murrieta, CA. An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs. Contact Dr. Paez to book an appointment today.

    Is this Dr. Marco Paez affiliated with a ranked Castle Connolly Top Hospital?

    Yes, Dr. Paez is affiliated with Riverside Community Hospital, UCI Medical Center, Redlands Community Hospital 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 Gastroenterologist?

    Explore Gastroenterologist 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 Marco Paez accepting new patients in Murrieta, CA?

    Yes, Dr. Marco Paez is accepting new patients at this time.

    Does Dr. Marco Paez offer online booking?

    Yes, you can use online booking to schedule an appointment with Dr. Paez, or contact the office for more information.

    How can I make an appointment with Marco Paez?

    Please contact Dr. Paez's office for information regarding telehealth appointment availability or for scheduling assistance.

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