HM
38 Years of Experience
Accepting patients
Who is Dr. Marks, Gastroenterologist in Manteca, CA?
Dr. Howard Marks, MD is a Gastroenterologist, who primarily practices in Manteca, CA with 1 additional practice location. He has been practicing for over 38 years and is board certified. Dr. Marks graduated from New York University School of Medicine and completed his residency at Maricopa Med Ctr, Gastroenterology; Cedars-Sinai Med Ctr, Internal Medicine. Dr. Marks is fluent in English, and is currently seeing new patients. To book an appointment or to confirm insurance options, please call Dr. Marks’s office at (209) 239-0515.
Where did Dr. Marks go to medical school and complete their residency?
Residency: Maricopa Med Ctr, Gastroenterology; Cedars-Sinai Med Ctr, Internal Medicine | Cedars Sinai Med Center
Medical School: New York Univ Sch of Med, New York Ny | New York University School of Medicine
Is Dr. Marks board certified as a Gastroenterologist?
Yes, Dr. Howard Marks, MD is board certified by the American Board of Family Medicine
What languages does Dr. Marks speak?
Dr. Marks and their clinical team can communicate with patients in the following languages:
English
What conditions does a Gastroenterologist like Dr. Marks typically treat?
As a Gastroenterologist, conditions treated by Dr. Howard Marks may include:
- Barrett's Esophagus
- Celiac Disease
- Constipation
- Crohn's Disease
- Diarrhea
- Diverticulitis
- Excessive Gas
- Exocrine Pancreatic Insufficiency
Please contact Dr. Marks' office directly to confirm care for your specific condition, for more information, or to schedule a consultation.
What procedures does a Gastroenterologist like Dr. Marks typically perform?
As a Gastroenterologist, procedures performed by Dr. Howard Marks may include:
- Colonoscopy
- Colonoscopy Consultation
- Colorectal Cancer Screening
- Endoscopic Ultrasound
- Endoscopy / Endoscopic Ultrasound
- Gastric Balloon
- Gastric Stimulator Implantation Consultation
- Gastric Stimulator Implantation Follow Up
Please contact Dr. Marks' office directly to confirm care for your specific procedure, for more information, or to schedule a consultation.
Does Dr. Marks accept my insurance?
Please contact Dr. Marks' office to confirm accepted insurance plans.
Where is Dr. Marks' office located?
Dr. Howard Marks' Primary Practice
1234 E North St Ste 201
Manteca, CA 95336
(209) 239-0515
What is Dr. Marks's NPI number?An National Provider Identifier (NPI) is a unique ID number that identifies doctors and healthcare providers nationwide.
Dr. Marks's National Provider Identifier (NPI) number is 1962479352.
What common questions do patients ask about Dr. Marks?
Here are answers to patients Frequently Asked Questions (FAQ’s) about Dr. Marks
What is Dr. Howard Marks's specialty?
Dr. Marks is a Gastroenterologist near Manteca, CA.
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. Howard Marks affiliated with a ranked Castle Connolly Top Hospital?
No, Marks 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 Howard Marks accepting new patients in Manteca, CA?
Yes, Dr. Howard Marks is accepting new patients at this time.
Does Dr. Howard Marks offer online booking?
Please contact Dr. Marks's office at (209) 239-0515 for information about online booking, telehealth, or to schedule an appointment.
How can I make an appointment with Howard Marks?
Please contact Dr. Marks's office at (209) 239-0515 for information regarding telehealth appointment availability or for scheduling assistance.
Which board certifications does Dr. Howard Marks have?
Dr. Howard Marks is certified by the American Board of Family Medicine.
Other Gastroenterologist Near Manteca, CA
BR
Gastroenterologist
Dr. Bhupinder Romana, MD is a Gastroenterologist, who primarily practices in Manteca, CA with 2 additional practice locations.
Manteca, CA
TT
Gastroenterologist
Dr. Tan Tran, MD is a Gastroenterologist, who primarily practices in Manteca, CA. He has been practicing for over 23 years.
Manteca, CA

Gastroenterologist
Dr. Ripudaman Beniwal, MD is a Gastroenterologist, who primarily practices in Tracy, CA with 1 additional practice location. He has been practicing for over 27 years and is board certified.
Tracy, CA