Summary

Dr. Jeffrey Mark is a gastroenterologist with 34 years of experience helping patients with digestive health concerns. He earned his medical degree from the University of Illinois at Chicago College of Medicine and completed his residency at the University of Texas Health System. Dr. Mark is fluent in Spanish and Chinese, allowing him to serve diverse patient communities.

Dr. Mark practices at multiple locations throughout California, including San Ramon, Turlock, and Modesto. His hospital affiliations include Doctors Medical Center of Modesto, San Ramon Regional Medical Center, and Emanuel Medical Center. He specializes in treating conditions such as hemorrhoids, colon polyps, and skin tags. Dr. Mark performs diagnostic procedures including colonoscopies and upper and lower endoscopies to help identify and address digestive issues. Patients have given him an average rating of 4.3 out of 5 stars.

AI-generated from data on this provider profile.

Quick Facts

  • accepting new patients
  • 4.3
  • 34 years of experience
  • speaks Spanish, Chinese
  • University Of Texas Health System
  • 35 written reviews
  • 1 specialty
  • 14 areas of expertise
  • 1 board certification
  • 3 hospital affiliations
  • 5 office locations
  • Male

Office Locations

Dr. Jeffrey C G Mark has 5 locations

All Functional Health San Ramon

111 Deerwood Rd Ste 168San Ramon, CA 94583
Mon8:00 am - 5:00 pm
Tue8:00 am - 5:00 pm
Wed8:00 am - 5:00 pm
Thu8:00 am - 5:00 pm
Fri8:00 am - 5:00 pm
SatClosed
SunClosed

The Real Gut Doctor

2101 Geer Rd Ste 118Turlock, CA 95382
Mon9:00 am - 5:00 pm
Tue9:00 am - 5:00 pm
Wed9:00 am - 5:00 pm
Thu9:00 am - 5:00 pm
Fri9:00 am - 5:00 pm
SatClosed
SunClosed

Northern California Surgical Center

3850 Geer RdTurlock, CA 95382
Mon6:00 am - 5:00 pm
Tue6:00 am - 5:00 pm
Wed6:00 am - 5:00 pm
Thu6:00 am - 5:00 pm
Fri6:00 am - 5:00 pm
SatClosed
SunClosed

Emanuel Medical Center Inc

825 Delbon AveTurlock, CA 95382

Compare with Similar Doctors

Dr. Jeffrey C G Mark, MD
Dr. Tahereh Ghaziani
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Dr. Jeffrey C G Mark, MDDr. Tahereh GhazianiDr. Houssam HalawiDr. Michael Krier, MD
GastroenterologyGastroenterologyGastroenterologyGastroenterology
Accepts New Patients Accepts New Patients Accepts New Patients Accepts New Patients
4.3 
4.5 
34 Years of Experience 17 Years of Experience 22 Years of Experience
No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option No Virtual Visit Option
Speaks Spanish, Chinese Speaks English Speaks Spanish, English
San Ramon , CARedwood City , CARedwood City , CAVacaville , CA
Med School: University Of Illinois At Chicago College Of Medicine Med School: American University Of Beirut Faculty Of Medicine Med School: Wright State University Boonshoft School Of Medicine
Current Profile
View Profile View Profile View Profile

Insurance Plans Accepted by Dr. Jeffrey C G Mark

  • Accepts Medicare
  • Accepts Medicaid

Medical Specialties

Dr. Jeffrey C G Mark has the following specialty

Specialty Expertise

Dr. Jeffrey C G Mark has the following 14 areas of expertise

  • Abdominal Pain
  • Acid Reflux Disease (Gastroesophageal Reflux / GERD)
  • Acid Reflux Disease (GERD)
  • Acupuncture
  • Celiac Disease
  • Colonoscopy
  • Constipation
  • Eating Disorders
  • Heartburn
  • Hemorrhoids
  • Hepatitis C
  • Irritable Bowel Syndrome (IBS)
  • Nutritional Support
  • Ulcerative Colitis

Certifications, License, & Education

34 Years Experience

MEDICAL LICENSE

Medical Doctor, California, 2026, Expired

EDUCATION & TRAINING

Residency

University Of Texas Health System

Medical School

University Of Illinois At Chicago College Of MedicineGraduated in 1992

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Frequently Asked Questions

What languages does Dr. Jeffrey Mark speak?
Dr. Jeffrey Mark speaks Spanish and Chinese.
Does Dr. Jeffrey Mark accept my insurance?
You can see the insurance plans that Dr. Jeffrey Mark accepts on their Vitals profile.
How can I make an appointment with Dr. Jeffrey Mark?
You can find contact information for Dr. Jeffrey Mark here on Vitals.
Which hospitals is Dr. Jeffrey Mark affiliated with?
Dr. Jeffrey Mark is affiliated with Doctors Medical Center Of Modesto, San Ramon Regional Medical Center, and Emanuel Medical Center Inc.
Is Dr. Jeffrey Mark accepting new patients?
Dr. Jeffrey Mark is accepting new patients on Vitals. View Dr. Jeffrey Mark's profile on Vitals to make an appointment.

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