MP
Accepting patients
Who is Dr. Posner, Gastroenterologist in Las Vegas, NV?
Dr. Mara Posner, DO is a Gastroenterologist, who primarily practices in Las Vegas, NV with 1 additional practice location. She is board certified. Dr. Posner graduated from Kansas City University of Medicine and Biosciences College of Osteopathic Medicine. Dr. Posner is fluent in English, and is currently seeing new patients. To book an appointment or to confirm insurance options, please call Dr. Posner’s office at (702) 877-5199.
Where did Dr. Posner go to medical school and complete their residency?
Medical School: Kansas City University of Medicine and Biosciences College of Osteopathic Medicine
Is Dr. Posner board certified as a Gastroenterologist?
Yes, Dr. Mara Posner, DO is board certified by the American Board of Internal Medicine
What languages does Dr. Posner speak?
Dr. Posner and their clinical team can communicate with patients in the following languages:
English
What conditions does a Gastroenterologist like Dr. Posner typically treat?
As a Gastroenterologist, Dr. Posner 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. Posner. 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:
- 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:
- Colon Polyps
- Colonic Polyps
- Colorectal Polyps
- Intestinal Polyps
- Bowel Polyps
ICD-10 Codes:
- Z86010: Personal history of colon polyps
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:
- Stomach Inflammation
- Stomach Disorder
- Gastritis & Gastropathy
- Gastritis
- Inflamed stomach lining
- Stomach lining inflammation
ICD-10 Codes:
- K2970: Gastritis, unspecified, without bleeding
Also known as:
- Colon Polyps
- Colonic Polyps
- Colorectal polyps
- Bowel polyps
- Intestinal polyps
ICD-10 Codes:
- K635: Polyp of colon
What procedures does a Gastroenterologist like Dr. Posner typically perform?
As a Gastroenterologist, Dr. Posner 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. Posner. 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
- Diagnostic Colonoscopy with Biopsy
- Colonoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Polypectomy
- Colon Polyp Removal
- Colorectal Lesion Excision
- Flexible Colonoscopy
- Colon Exam with Biopsy
- Lower Endoscopy
- Colon Cancer Screening
- 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
- 45378: Colonoscopy, flexible; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
- 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:
- Colonoscopy with Injections
- Diagnostic Upper Endoscopy with Biopsy
- Colonoscopy
- Colorectal Cancer Screening Tests
- Flexible Colonoscopy with Injection
- Colon Scope with Medication
- Therapeutic Colonoscopy
- EGD with Biopsy
- Esophagogastroduodenoscopy
- Upper GI Endoscopy
- Stomach Scope with Sample
CPT Codes:
- 45381: Colonoscopy, flexible; with directed submucosal injection(s), any substance
- 43235: Esophagogastroduodenoscopy, flexible, transoral; diagnostic, including collection of specimen(s) by brushing or washing, when performed (separate procedure)
Also known as:
- Esophageal Dilation (Bougie)
- Esophageal Widening
- Bougie Dilation of Esophagus
- Swallowing Tube Dilation
CPT Codes:
- 43450: Dilation of esophagus, by unguided sound or bougie, single or multiple passes
Does Dr. Posner accept my insurance?
Dr. Posner accepts most major insurance plans. Important: Please call our office at (702) 877-5199 before your appointment to verify that your specific plan and network are accepted.
What insurance plans does Dr. Posner accept in Las Vegas, NV?
Dr. Posner in Las Vegas, NV accepts plans from many carriers. While this list is updated regularly, it is not a guarantee of coverage.
Top Insurances
Humana
UnitedHealth Group
View All Insurances
Where is Dr. Posner's office located?
What is Dr. Posner's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Posner's National Provider Identifier (NPI) number is 1477765634.
What common questions do patients ask about Dr. Posner?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Posner
What is Dr. Mara Posner's specialty?
Dr. Posner is a Gastroenterologist near Las Vegas, NV.
What does a Gastroenterologist do?
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.
Is this Dr. Mara Posner affiliated with a ranked Castle Connolly Top Hospital?
No, Posner is not affiliated with a Castle Connolly Top Hospital. Castle Connolly Top Hospitals 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 Gastroenterologist?: Guides for symptoms, conditions, and treatments
Understand your symptoms and know when it’s time to see a Gastroenterologist. 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 Mara Posner accepting new patients in Las Vegas, NV?
Yes, Dr. Mara Posner is accepting new patients at this time.
Does Dr. Mara Posner offer online booking?
Please contact Dr. Posner's office at (702) 877-5199 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Mara Posner?
Please contact Dr. Posner's office at (702) 877-5199 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Mara Posner have?
Dr. Mara Posner is certified by the American Board of Internal Medicine.
Other Gastroenterologist Near Las Vegas, NV
FF
Gastroenterologist
Dr. Frank Faris, MD is a Gastroenterologist, who primarily practices in Las Vegas, NV. He is board certified.
Las Vegas, NV
GV
Gastroenterologist
Dr. Gayatri Vengayil, MD is a Gastroenterologist, who primarily practices in Las Vegas, NV with 1 additional practice location.
Las Vegas, NV

Gastroenterologist
Dr. James Trotter, MD is a Gastroenterologist, who primarily practices in Las Vegas, NV.
Las Vegas, NV