The 20 Best Colonoscopy Doctors Near Me

Find the Experts and Specialists who perform Colonoscopy

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Experienced in Colonoscopy

Dr. John K. Ryan

Gastroenterology
CommonSpirit Health
Comprehensive Digestive Institute Of Nevada
9260 W Sunset Rd, Ste 306, 
Las Vegas, NV 
Accepting New Patients

Experienced in Colonoscopy
CommonSpirit Health
Comprehensive Digestive Institute Of Nevada
9260 W Sunset Rd, Ste 306, 
Las Vegas, NV 
OverviewInsuranceLocationsClinical ResearchSimilar Doctors

Overview

John Ryan is a Gastroenterologist in Las Vegas, Nevada. Dr. Ryan is rated as an Experienced provider by MediFind in Colonoscopy. His top areas of expertise are Gastrointestinal Bleeding, Gastric Dysmotility, Hemorrhoids, Endoscopy, and Colonoscopy. Dr. Ryan is currently accepting new patients.

His clinical research consists of co-authoring 13 peer reviewed articles. MediFind looks at clinical research from the past 15 years. In particular, he has co-authored 2 articles in the study of Colonoscopy.

Graduate Institution
University Of South Carolina School Of Medicine
Residency
Baystate Medical Center
Specialties
Gastroenterology
Licenses
Internal Medicine in NV
Board Certifications
Internal Medicine (Sub: Gastroenterology)
Fellowships
Loyola Univ. Med. School
University Of North Carolina
Hospital Affiliations
Dignity Health - St. Rose Dominican Hospital, Rose De Lima Campus - Henderson, NV
Dignity Health - St. Rose Dominican Hospital, Siena Campus - Henderson, NV
Languages Spoken
English
Gender
Male

Insurance

Accepted insurance can change. Please verify directly with the provider.

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Accepted insurance plans:

Aetna
  • EPO
  • HMO
  • POS
  • PPO
Alignment Health Plan
  • MEDICARE MAPD
  • MEDICARE SNP
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Anthem BCBS
  • EPO
  • HMO
  • POS
  • PPO
Blue Cross Blue Shield
  • EPO
  • HMO
  • POS
  • PPO
Blue Shield of California
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE-MEDICAID PLAN
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Cambia Health Solutions
  • EPO
  • INSURANCE PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • PPO
Change Healthcare
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
Cigna
  • EPO
  • HMO
  • PPO
Golden Rule
  • INSURANCE PLAN
  • PPO
Health Care Services Corporation
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • OTHER COMMERCIAL
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
  • PPO
Health Net

Accepted plan types not found. Please verify directly with the provider.

HMSA
  • HMO
  • PPO
Horizon Healthcare
  • EPO
  • POS
Humana
  • HMO
  • INDEMNITY
  • POS
  • PPO
Kaiser Permanente
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • OTHER MEDICARE
  • POS
  • PPO
Managed Medicaid
  • OTHER MANAGED MEDICAID
Medicaid
  • OTHER MEDICAID
  • STATE MEDICAID
Premera Blue Cross
  • INSURANCE PLAN
  • MEDICARE MAPD
  • OTHER COMMERCIAL
  • PPO
SCAN Health Plan
  • INSURANCE PLAN
  • MEDICARE MAPD
SelectHealth
  • HMO
  • POS
Silversummit Health Plan
  • HMO
  • MANAGED MEDICAID PLAN
TeamCare
  • OTHER COMMERCIAL
Trustmark
  • PPO
UnitedHealthcare
  • EPO
  • HMO
  • POS
  • PPO
Wellcare
  • EPO
  • HMO
  • INSURANCE PLAN
  • MANAGED MEDICAID PLAN
  • MEDICARE MAPD
  • MEDICARE PDP
  • MEDICARE SNP
  • MEDICARE-MEDICAID PLAN
  • OTHER MEDICARE
  • OTHER MEDICARE PART D
View 20 Less Insurance Carriers -

Locations

Comprehensive Digestive Institute of Nevada
9260 W Sunset Rd, Ste 306, Las Vegas, NV 89148
Call: 702-483-4483

Additional Areas of Focus

Dr. Ryan has provided the following conditions as areas of focus. Please note that we may not have enough data to validate their experience in some of these conditions.

Non-Alcoholic Fatty Liver Disease
Nonalcoholic Steatohepatitis (NASH)

Clinical Research

Clinical research consists of overseeing clinical studies of patients undergoing new treatments and therapies, and publishing articles in peer reviewed medical journals. Providers who actively participate in clinical research are generally at the forefront of the fields and aware of the most up-to-date advances in treatments for their patients.


13 Total Publications

Balancing Act: Evaluating the Impact of Direct Oral Anticoagulants on Gastrointestinal Complications in Atrial Fibrillation Patients.
Balancing Act: Evaluating the Impact of Direct Oral Anticoagulants on Gastrointestinal Complications in Atrial Fibrillation Patients.
Journal: Cureus
Published: April 30, 2025
View All 13 Publications
Similar Doctors
Advanced in Colonoscopy
Dr. Nasim Mcdermott
Gastroenterology
Advanced in Colonoscopy
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Gastroenterology

Digestive Associates

5440 W Sahara Ave, Ste 302, 
Las Vegas, NV 
 (6.7 miles away)
702-633-0207
Languages Spoken:
English
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Accepting New Patients

Nasim Mcdermott is a Gastroenterologist in Las Vegas, Nevada. Dr. Mcdermott is rated as an Advanced provider by MediFind in Colonoscopy. Her top areas of expertise are Necrotizing Enterocolitis, Colitis, Ascites, Colonoscopy, and Endoscopy. Dr. Mcdermott is currently accepting new patients.

Advanced in Colonoscopy
Dr. Shahid Wahid
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Advanced in Colonoscopy
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Gastroenterology

Digestive Associates

2031 McDaniel St, Ste 140, 
North Las Vegas, NV 
 (13.0 miles away)
702-633-0207
Languages Spoken:
English
See accepted insurances
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Shahid Wahid is a Gastroenterologist in North Las Vegas, Nevada. Dr. Wahid is rated as a Distinguished provider by MediFind in Colonoscopy. His top areas of expertise are Jaundice, Hereditary Pancreatitis, Cholestasis, Endoscopy, and Gastrectomy. Dr. Wahid is currently accepting new patients.

Advanced in Colonoscopy
Dr. Rohtashav Dhir
Gastroenterology
Advanced in Colonoscopy
Dr. Rohtashav Dhir
Gastroenterology

Gastroenterology Associates

6950 S Cimarron Rd, Ste 200, 
Las Vegas, NV 
 (1.9 miles away)
702-796-0231
Languages Spoken:
English
See accepted insurances
Accepting New Patients

Rohtashav Dhir is a Gastroenterologist in Las Vegas, Nevada. Dr. Dhir is rated as a Distinguished provider by MediFind in Colonoscopy. His top areas of expertise are Angiodysplasia of the Colon, Heartburn, Intestinal Cancer, Colonoscopy, and Gastrectomy. Dr. Dhir is currently accepting new patients.

VIEW MORE COLONOSCOPY DOCTORS

Areas of Expertise

MediFind evaluates expertise by pulling from factors such as number of articles a doctor has published in medical journals, participation in clinical trials, speaking at industry conferences, prescribing and referral patterns, and strength of connections with other experts in their field.

Learn more about MediFind’s expert tiers

Find Dr. Ryan's expertise for a condition
ConditionClose
    • Distinguished
    • Gastrointestinal Bleeding
      Dr. Ryan is
      Distinguished
      . Learn about Gastrointestinal Bleeding.
      See more Gastrointestinal Bleeding experts
    • Advanced
    • Endoscopy
      Dr. Ryan is
      Advanced
      . Learn about Endoscopy.
      See more Endoscopy experts
    • Gastric Dysmotility
      Dr. Ryan is
      Advanced
      . Learn about Gastric Dysmotility.
      See more Gastric Dysmotility experts
    • Gastroesophageal Reflux Disease (GERD)
      Dr. Ryan is
      Advanced
      . Learn about Gastroesophageal Reflux Disease (GERD).
      See more Gastroesophageal Reflux Disease (GERD) experts
    • Hemorrhoids
      Dr. Ryan is
      Advanced
      . Learn about Hemorrhoids.
      See more Hemorrhoids experts
    • Experienced
    • Acute Pancreatitis
      Dr. Ryan is
      Experienced
      . Learn about Acute Pancreatitis.
      See more Acute Pancreatitis experts
    • Angiodysplasia of the Colon
      Dr. Ryan is
      Experienced
      . Learn about Angiodysplasia of the Colon.
      See more Angiodysplasia of the Colon experts
    • Attenuated Familial Adenomatous Polyposis
      Dr. Ryan is
      Experienced
      . Learn about Attenuated Familial Adenomatous Polyposis.
      See more Attenuated Familial Adenomatous Polyposis experts
    • Bacterial Gastroenteritis
      Dr. Ryan is
      Experienced
      . Learn about Bacterial Gastroenteritis.
      See more Bacterial Gastroenteritis experts
    • Barrett Esophagus
      Dr. Ryan is
      Experienced
      . Learn about Barrett Esophagus.
      See more Barrett Esophagus experts
    • Benign Esophageal Stricture
      Dr. Ryan is
      Experienced
      . Learn about Benign Esophageal Stricture.
      See more Benign Esophageal Stricture experts
    View All 63 Experienced Conditions
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