Better Digestive Health


Your lifestyle and your choice of foods can affect the way your body digests the foods you eat. Drinking water, adding fiber, and exercising all contribute to better digestive health. We’re here to help you! Learn how+

Prevention is the Best Medicine


Prevention is the best way to promote health. Early detection save lives. Many disorders of the digestive tract such as cancers of the colon, rectum and esophagus are easily preventable and may be curable is diagnosed early. Read more about prevention+.

On-Site Endoscopy Center


We offer the most modern, state-of-the-art, on-site surgery center in the area for endoscopy surgical procedures. When our patients take advantage of our center, they find that the process is much more convenient, as well as personal. Read more about our ambulatory surgical center+.

Over 50? It's time for a Colonoscopy!


A colonoscopy is really a routine cancer screening test that is highly effective at detecting and preventing colon cancer. Our highly trained doctors and staff will pay special attention to communicating all that is involved in your procedure, and to help you feel comfortable all along the way. Read more about colonoscopy+.

Meet Our Newest Physician

Dr. Ruth Montalvo Digestive Care PhysicansDigestive Care Physicians welcome their newest member, Dr. Ruth Montalvo. She comes from Albany, Georgia with over 18 years of experience as a gastroenterologist. As an advocate of screenings, she knows lives can be saved with early treatment and preventative measures. Learn more about Dr. Montalvo.

She is a member of the American Society for Gastrointestinal Endoscopy and American Gastroenterology.

Dr. Montalvo is fluent in both English and Spanish.

Meet the Rest of Our Team

Ranvir Singh, M.D. | Digestive Care Physicians

Ranvir Singh, MD

portrait of Long Nguyen, D.O. | Digestive Care Physicians

Long B. Nguyen, DO

portrait of Stephen Rashbaum, M.D. | Digestive Care Physicians

Stephen Rashbaum, MD

Vanessa Dang, MSN, FNP-BC | Digestive Care Physicians

Vanessa T. Dang, MSN, APRN, FNP-BC

portrait of Nitin Parikh, M.D. | Digestive Care Physicians

Nitin J. Parikh, MD

headshot of Tammi D’Elena, PA-C | Digestive Care Physicians

Tammi D’Elena, PA-C

Digestive Care Physicians, LLC is a single specialty gastroenterology practice serving the Metro Atlanta, GA area since 2008. Physicians, Dr. Ranvir Singh, Dr. Stephen Rashbaum, and Dr. Nitin J. Parikh, warmly welcome new partner Dr. Long Nguyen, and new physician Dr. Ruth Montalvo and one new associate, Vanessa Dang, MSN, FNP-NB to Digestive Care Physicians. Our new colleagues are board certified in gastroenterology and/or internal medicine and greatly appreciate the opportunity to serve your medical needs. Dr. Long Nguyen, and Vanessa Dang, MSN, FNP-NB, speak English, and Vietnamese at the Johns Creek and Lawrenceville locations. In addition to our growing staff, Digestive Care Physicians is adding a new location in Lawrenceville, GA. All of our physicians provide state-of-the-art care at our freestanding endoscopy center, Digestive Care Endoscopy. Learn more about our in-house endoscopy center+.

Why Choose Us?

Our goal is to provide care that is second to none via physicians and staff who are knowledgeable in all aspects of gastroenterology. We believe that this care can be delivered through compassion, confidentially, and understanding of your need for service regardless of race, religion, or economic background.

Gastroenterologists are an important type of physician to have on hand – your intestinal and digestive health is of the utmost importance, and with that being the case, you want to make sure you have a good physician that can actually recognize the potential problems and take care of them in a timely manner.

With four offices conveniently located in north of the Atlanta Metro, Johns Creek, Alpharetta, Cumming, and Lawrenceville Georgia, our exceptional gastrointestinal physicians will provide you with the best care possible. Find out more about the conditions we treat+.

Our Services

digestive system graphicFrom gastroesophagel re-flux to colonoscopy, Digestive Care Physicians are equipped and experienced to handle all of your gastroenterology needs. Digestive Care Physicians feature a state-of-the-art on-site surgical suite in their Johns Creek location, in order to provide a wide variety of complex and routine gastroenterology procedures. In each of our four locations, Johns Creek, Alpharetta, Cumming, and Lawrenceville, our entire medical team offers specialized services using new techniques and equipment to diagnose and treat diseases of the digestive system.

Among our specialized services and treatments include:

Finance Options

If you’re considering a health care procedure, you may have concerns over how to pay for it. We accept most all types of insurance plans but if you need a financing option, we offer convenient finance options through Enhanced Patient Financing. Learn more about how you can structure a payment plan that meets your budget, allowing you to proceed with your doctor’s treatment recommendations.

Self-Pay Option

We offer a convenience Self-Pay option for our patients. See our Self-Pay Brochure. We accept cash, debit, money order or credit cards. No personal checks.

Self-Pay Colonoscopy: $1375.00*

(Includes Anesthesia, Physician Fee, Facility Fee)
2 Pathology specimens included in price, any additional at $95 each to be billed/refunded after procedure.

Adenoma Detection Rate

Why do You Need a Colonoscopy Screening?

The goals of a screening colonoscopy are to prevent colorectal cancer by identifying and removing adenomas and to identify colon or colorectal cancer if it is already present. The most important quality indicator, the Adenoma Detection Rate is the proportion of average-risk patients in whom a physician identifies adenomas during colonoscopy.

Learn More+

Read Our Recent Blogs

Low-FODMAP diet includes sweet potatoes

To Live Long and Healthy

To live long and healthy has been studied for decades. The doctors at Digestive Care Physicians are true believers in eating the right foods can help in overall heath which can lead to a longer life expectancy. Board-Certified physicians Dr. Singh, Dr. Rashbaum, Dr. Nitin Parikh, Dr. Long B. Nguyen, Dr. Ruth Montalva, and providers Tammi D’Elena, PA-C; and Vanessa T. Dang,…


Diverticulitis symptoms

Diverticulitis Symptoms

Diverticulitis symptoms can be limited to severe. Many people with diverticulitis have little or no discomfort or symptoms. What is Diverticulitis? When the small pouches in the colon bulge outward through weak spots, like an inner tube that pokes through weak places in a tire, the pouch is called a diverticulum. Pouches (plural) are called…


colonoscopy day bring socks

It’s the Day of Your Colonoscopy – No Worries!

Finally, the day of your colonoscopy is here! You’ve taken the prep, you’re clean as a whistle inside. The worst is over. Honestly, the day of your colonoscopy is the easy part. However, before I go on, I have to say that the prep has greatly improved. Years ago I had a colonoscopy and I…


Gastritis stomach inflamation


What is Gastritis? Gastritis is a condition where infections and conditions cause inflammation in the lining of your stomach. The stomach lining becomes inflamed or swollen and can have a variety of warning symptoms. Indigestion A burning or gnawing feeling in the stomach Feeling full or bloated after eating Nausea and vomiting Belching Loss of…


Preparing for a colonoscopy

Preparing for a Colonoscopy

How to Prepare for a Colonoscopy When preparing for a colonoscopy, it’s very important to follow all of directions carefully. You will receive a packet of information at your initial consultation at Digestive Care Physicians with locations in Alpharetta, Cumming, Johns Creek and Lawrenceville, Georgia. In your packet you will find prep instructions. Your colon…


Rectal Pain

Rectal Pain – A Real Pain in the Butt!

What Causes Rectal Pain? The most common causes of rectal pain (or anal pain) are hemorrhoids, anal fissures, infections, lodged foreign objects, or bowel diseases, such as colitis, IBD, or IBS. It might even be as simple as a skin sensitivity caused by your laundry detergent, soap, or clothing material. There are other causes of…


Acid Reflux

Heartburn Relief – Put Out the Fire

After a nice spicy meal some people experience acid reflux, which is generally categorized as a burning feeling in the chest and stomach. On the other hand, statistics show that 60 million Americans suffer from acid reflux disease, also known as GERD, (gastroesophageal reflux disease). Symptoms can vary from mild to moderate, or severe. Depending…


Digestive Health problems

6 Tips For Dealing With Digestive Problems

Are You Suffering From Digestive Health Problems? Chronic digestive health problems can be caused by infection, stress, bacteria in food and medications. But the bottom line is, if you suffer from upset stomach, gas and sudden attacks of diarrhea, or if you feel like your entire life is scheduled around the proximity of bathrooms, it’s…


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blue ribbon for BestSelf Best Gastroenterologist Award

Stephen Rashbaum, MD Named Top Doc


Atlanta Area, board certified gastroenterologist, Dr. Stephen Rashbaum, has been named as one of America’s “Top Docs” as vetted by leading medical database authority Castle Connolly. Top Doctors are chosen annually through an extensive survey process of thousands of American doctors. Read more about Dr. Rashbaum and his inclusion into this esteemed group of physicians+.



November, 2019

Five star reviews


I see Dr. Singh. Excellent staff who show genuine concern and listen attentively. I am very impressed and recommend this practice to everyone.

Carlos Nunez – Verified google Review

September, 2019

Five star reviews


Dr. Parik is hands-down the best we have seen. We would highly recommend this practice. His entire staff is friendly and personable too!

Sara Strish – Verified Google Review

June, 2019

Five star reviews


Dr Montalvo is so caring and committed to her patients. She takes the time to listen, and hear the patient. Her appointments are thorough and in-depth. Her kindness makes you glad that you selected her.

Dawn Stastny – Verified Google Review

April, 2019

Five star reviews


I had a professional but caring out-patient surgery experience with Dr Rashbaum and the staff at Emory Johns Creek hospital. The doctor explained the outcome clearly and I was treated well.

Melanie Wible – Verified google Review

March, 2019

Five star reviews

Had a procedure done there last Friday. The entire staff was very professional, courteous, friendly and extremely accommodating…thank you all so much! –
Everyone was very friendly, helpful and attentive. It was a very pleasant experience despite what we were doing! Thank you!

T Mark Adams – Verified Facebook Review

HIPPA Compliant

HIPAA Compliant logo | Digestive Care Physicians