Dr. David Drewitz

Gastroenterology
Phoenix, AZ
29 years experience male

Locations

Arizona Digestive Health

Phoenix, AZ

Address

9305 W. Thomas Rd Suite 370, Phoenix, AZ
Directions

My office hours

Thursday: 8:00am - 5:00pm
Show more

Fax

(602) 264-5646

Arizona Digestive Health

Phoenix, AZ

About

Bio

I am a board certified Gastroenterlogist with a private practice in Phoenix, AZ since 1997. My specialty is focused on helping patients with digestive, liver and weight related disorders create optimal health and improve their longevity.

Specialties
Doctors may have more than one area of specialty interest. Board certification in a specialty area means the doctor has completed formal training and has practice experience in that specialty, and has passed the certification examination from the corresponding accredited medical specialty board.

Gastroenterology

Licenses

United States: Arizona

Languages spoken

English

Doctor Q&A

502 Answers
25 Agrees
The number of answers this doctor has agreed with.
A 21-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Few suggestions...: Take control of your energy management system by controlling your energy intake and managing your Insulin pump. You do this by altering your food int... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 55-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Dysbiosis: You may have an imbalance in the gut flora... try taking a probiotic such as ALIGN.
Created for people with ongoing healthcare needs but benefits everyone.
A 32-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Need Exam...: Swelling in and around the anus most likely is caused by hemorrhoids. Infection or std is possible but less likely. Suggest seeing a doctor for an e... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Abdominal wall: If you think the left or right side of your abdomen is sticking out and imaging is normal, it might be caused by an abdominal wall weakness or hernia.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Difficult to treat: Anal fissures are often difficult to treat and slow to heal. Avoidance of constipation is a necessary component of treatment and fiber can help. Usu... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
No: Spider angiomata are one of the commonly recognized stigmata of cirrhosis of the liver. They are red skin lesions composed of a central arteriole surr... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 36-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
A new TipTap: Functional micronutrient testing can determine which if any vitamins or minerals are deficient.
Created for people with ongoing healthcare needs but benefits everyone.
A 23-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Behavioral change: Your craving for junk food is a habit that you developed after years of repetitive behavior. Every habit has a trigger, action and reward. There are... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Yes...: There are many potentially serious causes of bloody stools that you don't want to delay the diagnosis of so see your doctor or go to an urgent care or... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 35-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Black stools...: Black stools can either be from foods or medicines ingested or a sign of GI tract bleeding. Common foods that cause black stools include collard gree... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Maldigestion..: Gluten intolerance is the diagnosis given when you experience symptoms of maldigestion after ingestion of gluten containing foods. Maldigestive sympt... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 31-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
No...: Elevated liver tests are not a known side effect of Omeprazole (prilosec) and other causes should be sought.
Created for people with ongoing healthcare needs but benefits everyone.
A 19-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
No...: Lpr is not a new condition. Most people recognize gerd, and LPR (laryngopharyngeal reflux) is a variant of the diagnosis in which the reflux extends ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Monitor closely...: Blood in the stool is clearly abnormal and could be caused by many things including colitis (inflammation, infection), hemorrhoids, fissures, polyps o... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 22-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
See a Doctor...: Rectal bleeding is a potentially serious problem. An anorectal problem such as hemorrhoids is most likely in your case but there are other conditions... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 41-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Not sure...: There are several causes for ano-rectal pain with defecation including anal fissure, hemorrhoids, proctalgia and proctitis to name a few. If this is ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 34-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
No...: ...There is no association between diverticulosis (itis) and fertility.
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Health blueprint: The answer lies within our own bodies. Human beings are incredibly resilient. If we stop the assault of unhealthy habits, we can tap into the bodies i... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 18-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Many possibilities..: Your symptoms are common for many possible explanations ranging from insignificant to serious. Pregnancy, endometriosis, genito-urinary tract infecti... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
See your doctor...: Bloody stools are potentially a sign of significant lower GI pathology. Possible causes include hemorrhoids, anal fissures, colitis, and benign and m... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 44-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
No...: Intestinal iron absorption is poor to start with and oral iron supplements commonly discolor the stool black. The color changes of your stool while o... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 35-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Power of choice...: The choice to make a healthy weight and waist measurement a priority in your life is the first step. Then organizing the day to day decisions around ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 53-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Yes...: You are very vulnerable to c. Diff recurrence by taking doxy this soon after treatment for c. Diff and will require prophylactic coverage with vanco t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 18-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
No...: "cheat days" while on a low calorie program to lose weight does nothing to rev up your metabolism. All it does is stunt your weight loss and reinforc... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 38-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Worth a try...: Erythromycin is in a class of antibiotics that have a propensity to cause GI side effects of cramps and diarrhea because they activate a receptor in t... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Slow down...: There is no safe way in which to lose weight quickly. And, there is no way to spot reduce one depot of fat over another. With achievement of a negat... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Many possibilities: There are multiple possible causes of anal itching (pruritus) including: infections (e.g. Pinworms, fungi, stds), hemorrhoids, dermatitis, anal leakag... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 21-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
See a Doctor...: Rectal bleeding is a sign of potentially potentially serious problems. Don't delay in seeing a doctor.
Created for people with ongoing healthcare needs but benefits everyone.
A 39-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Raw meat...: Eating raw or undercooked meat from an animal infected with the tapeworm is usually how it is contracted.
Created for people with ongoing healthcare needs but benefits everyone.
A 49-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Something else?: H. Pylori infection of the stomach if not associated with an ulcer is usually a silent infection i.e. Asymptomatic. If you are having severe abdomina... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Few signs...: There are a few signs to be aware of that might indicate infection at a feeding tube site including pain, redness and pus. If any of these signs are ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 48-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Few suggestions...: Indigestion is commonly a symptom of acid reflux which is the back flow of stomach contents into the esophagus. Its triggered by many factors. Avoid... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Fatty liver disease: Fatty liver disease is caused by excessive fat accumulation in the the liver. Fatty liver can lead to complications including hardening of the liver ... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 24-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Hard work...: Developing the abdominal muscles requires lots of exercise... Sit-ups, crunches, leg lifts etc., however, you will not see your abdominal muscles i.e.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 26-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Health blueprint: The answer lies within our own bodies. Human beings are incredibly resilient. No matter how much we abuse our bodies, if we stop the assault of unheal... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 47-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Yes: Deficiency of the enzyme lactase which is the cause of lactose intolerance occurs in variable degrees which therefore results in a spectrum of symptom... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Multiple ways...: Stomach viruses are usually transmitted via airborne or contact route. This explains how stomach virus outbreaks occur on cruise ships affecting man... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 26-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Can't spot reduce: Spot reduction of tummy fat is unfortunately not possible. Through healthy diet and exercise you can reduce your Insulin levels and start burning fat.... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
IBS?: Mucousy stools are not a sign of significant pathology and are most commonly associated with ibs (irritable bowel syndrome). To determine if you have... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 29-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Avoid toxins: A healthy diet for you and most of the rest of us would consist of eating mostly a plant based diet void of the chemicals found in highly processed fo... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 26-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Ate blue food...: Blue stool probably means you ate or drank something with blue pigments or blue food coloring.
Created for people with ongoing healthcare needs but benefits everyone.
A member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Better breakfast: Eating a nutritious breakfast consisting of whole grains (rolled oats) and fresh fruit will allow you to go to school feeling full and provide a stead... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 33-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
See your doctor...: Rectal bleeding is a symptom of potentially serious anorectal or intestinal pathology. The possible causes include inflammatory bowel disease (crohn'... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 27-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
1:133: Average risk of celiac is 1:133 in the us. If there is a family history of celiac then the risk increases.
Created for people with ongoing healthcare needs but benefits everyone.
A 46-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Long list...: There is a long list of causes of abdominal pain but a few more common GI causes include irritable bowel syndrome (ibs), acid-peptic disorders (ulcers... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 37-year-old member asked:
Dr. David Drewitz
Gastroenterology 29 years experience
More tests...: Finding a abnormal lft is potentially a sign of liver disease. There are a spectrum of liver disorders that can present this way and your best bet is... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 46-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Unlikely: Nausea can be an atypical reflux symptom. Ruq pain is not a reflux symptom and other causes should be pursued.
Created for people with ongoing healthcare needs but benefits everyone.
A 28-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Globus: The sensation of something in your throat or esophagus is termed globus. The most common cause of globus is reflux or anxiety. Its not clear from your... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 40-year-old female asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Maybe...: Their are potential chemical of food sensitivities to components of wine that some people may react to causing bloating including preservatives and su... Read More
Created for people with ongoing healthcare needs but benefits everyone.
A 43-year-old male asked:
Dr. David Drewitz
Gastroenterology 29 years experience
Yes...: Fatty liver disease is the most common cause of elevated lfts. Some patients with fatty liver experience progression of liver disease to cirrhosis. ... Read More
Created for people with ongoing healthcare needs but benefits everyone.

Testimonials
Recommendations and Thank you notes are endorsements given from patients or other doctors.

7
Recommendations
1.4K
Thank you notes
Apr 12, 2013
An excellent gastroenterologist- I would have him as my GI doctor if I have a problem involving the GI tract.
HealthTap member
Mar 30, 2015
Dr. Drewitz is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Mar 31, 2015
Dr. Drewitz is an amazing doctor! #nationaldoctorsday2015 #virtualflower1
HealthTap member
Thank you, your answer was very helpful! I have endmtosis n had hyst 20 yrs ago n gallbladder removed 8-11-11 n now have bloody stool and bowel obstruction wjen n infection n cyst o
HealthTap member
Thanks for your quick reply! Thanks. I am v busy in my job mostly sitting upto 8 hrs a day. I v hungry at the time of dinner. Tried to loose wt. But failed. Plz advice
HealthTap member
Thanks for your quick reply! That's kind of what I was thinking too, but it's different from the usual place which is under my left breast and that hurts extremely bad!

Education & Training

Medical/Graduate school

Medical College of Wisconsin, WI
Graduated 1990MD

Residency

St. Joseph's Hospital and Medical Center Phoenix, AZ

Awards

5 time TOP DOC Award winner Phoenix Magazine
Top Doctor, Second Place, Phoenix, AZ - Winter
2013
Top Gastroenterologist , Third Place, National - Winter
2013
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