Summary

Dr. James Grendell is a gastroenterologist and internal medicine physician who earned his medical degree from Ohio State University College of Medicine & Public Health. He completed his residency training at Lancaster General Hospital and has been practicing medicine for over five decades. Dr. Grendell is fluent in both English and Spanish.

Dr. Grendell is affiliated with NYU Langone Hospital Long Island and practices at multiple locations throughout Mineola, New York. He specializes in treating complex digestive conditions including gastroparesis, Crohn's disease, and anal fissures. His expertise extends to performing home infusion therapy and specialized procedures like Brandt-Daroff exercises and canalith repositioning maneuvers. Patients have given him an average rating of 3.9 out of 5 stars.

Overview based on verified provider data

Quick Facts

  • 3.9
  • 51 years of experience
  • 12 insurance plans accepted
  • speaks English, Spanish
  • Lancaster General Hospital
  • 3 written reviews
  • 2 specialties
  • 12 areas of expertise
  • 2 board certifications
  • 1 hospital affiliation
  • 3 office locations
  • Male

Patients’ Perspective

  • Gave an accurate diagnosis
  • Had a good bedside manner
  • Spent time with me

Office Locations

Dr. James Henry Grendell has 3 locations

Nyu Winthrop Gastroenterology

222 Station Plz N Ste 428Mineola, NY 11501
Mon9:00 am - 4:00 pm
Tue9:00 am - 4:00 pm
Wed9:00 am - 4:00 pm
Thu9:00 am - 4:00 pm
Fri9:00 am - 4:00 pm
SatClosed
SunClosed

Winthrop Internal Medicine Associates

222 Station Plz N Ste 310Mineola, NY 11501
Mon8:30 am - 5:00 pm
Tue8:30 am - 5:00 pm
Wed8:30 am - 5:00 pm
Thu8:30 am - 5:00 pm
Fri8:30 am - 5:00 pm
SatClosed
SunClosed

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Dr. James Henry Grendell, MD
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Dr. James Henry Grendell, MDDr. Michael Dann, MDDr. Aga NagornaDr. Kristen Kyong Lee, MD
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients
3.9 
51 Years of Experience 22 Years of Experience 7 Years of Experience 17 Years of Experience
No Virtual Visit Option Virtual Visit Available No Virtual Visit Option Virtual Visit Available
Speaks English, Spanish Speaks English Speaks English Speaks English
Mineola , NYNEW YORK , NYBROOKLYN , NYNEW YORK , NY
Med School: Ohio State University College Of Medicine & Public Health Med School: State University of New York Med School: Albert Einstein College of Medicine Med School: Cornell University
Current Profile
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Insurance Plans Accepted by Dr. James Henry Grendell

  • Aetna
  • Blue Cross Blue Shield
  • Cigna
  • Fidelis Care (NY)
  • HealthFirst (NY)
  • HealthFirst (NY) - Medicare (Advantage HMO)
  • Medicaid - Medicaid
  • Medicaid - Medicaid (HMO Plans)
  • Medicaid - Medicaid (Managed)
  • Medicare
  • Medicare - Medicare
  • UnitedHealthcare

Medical Specialties

Dr. James Henry Grendell has the following 2 specialties

Specialty Expertise

Dr. James Henry Grendell has the following 12 areas of expertise

  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Constipation
  • Endoscopy (Endoscopic Surgery)
  • Esophageal and Gastric Varices
  • Hepatitis C
  • Internal Medicine
  • Irritable Bowel Syndrome (IBS)
  • Liver Diseases
  • Nutrition Disorders
  • Pancreatic Cancer
  • Pancreatic Diseases
  • Ulcerative Colitis

Certifications, License, & Education

51 Years Experience

Education & Training

Residency

Completed their residency at Lancaster General Hospital.

Medical School

Graduated from Ohio State University College Of Medicine & Public Health in 1975.

NPI Number

Dr. Grendell's NPI number is 1457320426.

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Frequently Asked Questions

Where is Dr. James Grendell's office located?
Dr. James Grendell's office is located at 259 1st St, Mineola, NY, 11501.
Does Dr. James Grendell accept virtual/telehealth appointments?
Dr. James Grendell has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
Which hospitals is Dr. James Grendell affiliated with?
Dr. James Grendell is affiliated with Nyu Langone Hospital Long Island.
Does Dr. James Grendell accept my insurance?
You can see the insurance plans that Dr. James Grendell accepts on their Vitals profile.
Is Dr. James Grendell accepting new patients?
Dr. James Grendell has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.

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