About Dr. Ari Nowain

Dr. Ari Nowain – Board Certified Gastroenterologist

Arash Ari Nowain, MD is double board certified in Gastroenterology and Internal Medicine. He received his medical degree from the University of Southern California, Keck School of Medicine and was the recipient of the Clinical Medicine Scholarship award in his fourth year of medical training. He completed three years of residency training in Internal Medicine at the Los Angeles County / USC General Hospital. In all three years of residency, Dr. Nowain received the Resident of the Year award. He then completed three years of fellowship training in the Department of Gastroenterology and Liver Diseases at the USC Keck School of Medicine.

Dr. Ari Nowain specializes in medical disorders of the digestive system and gastroenterology diseases that effect the esophagus, stomach, small intestine, colon, liver, gallbladder, and pancreas. He performs an array of diagnostic and therapeutic techniques including upper endoscopy (EGD), lower endoscopy (colonoscopy), small bowel capsule endoscopy (pill swallowed to take video of small bowel), and hemorrhoid band ligation. He treats acute and chronic GI problems and also focuses heavily on prevention of diseases such as colon and esophageal cancer.

nowain-beverly-hills-gi-super-doctors-logoDr. Nowain has received the following clinical awards:

  • Super Doctor by Key Professional Media. This award is based on an exhaustive, multi-step process. It is granted to physicians who have a achieved an exceedingly high level of performance in their field.
  • Castle Connolly’s Top Doctors Award
    Castle Connolly is America’s trusted source for the identification of Top Doctors. Their physician-led research team reviews and screens the credentials of tens of thousands of physicians who are nominated by their peers annually, via a nationwide online process, before selecting those physicians who are regionally or nationally among the very best in their medical specialties. Castle Connolly believes strongly that Top Doctors Make a Difference™
  • Patient’s Choice Award – Patients’ Choice recognition reflects the difference a particular physician has made in the lives of his/her patients. The honor is bestowed to physicians who have received near perfect scores, as voted by patients.
  • Compassionate Doctor Recognition – Compassionate Doctor certification is granted to physicians who treat their patients with the utmost kindness. The honor is granted based on a physician’s overall and bedside manner scores.
  • On-Time Doctor Award – Vitals On-Time + Promptness Award recognizes doctors with consistent high ratings for timeliness of appointments. The honor is granted based on a physician’s overall and promptness scores.

Dr. Nowain has staff privileges at the Cedars-Sinai Medical Center and other local hospitals in Los Angeles. He maintains his teaching privileges at the Keck USC School of Medicine. His research has been published in several medical journals including the following:

Dr. Nowain is a Los Angeles native and is thrilled to practice where he grew up. His wife, Dr. Haleh Bakshandeh, is a dermatologist with whom he shares an office. Together, they strive to provide a comfortable and friendly medical office environment to meet the needs of their patients.


Dr. Nowain performed Third Eye® colonoscopies for Scopefest at La Peer Health Systems.


Arash Ari Nowain, M.D.

Gastroenterology and Hepatology

310-657-4444 (office)
310-742-0444 (fax)




Los Angeles, California
1994 – 1998
Diploma: B.S.
Honors received
Major: Neuroscience


Keck/USC School of Medicine

Los Angeles, California
1998 – 2002
Diploma: M.D.
Received Eric Cohen Clinical Medicine Scholarship for excellence in clinical skills





2002 – 2005
Type of Program: Internal Medicine
Facility/Institution: LAC+USC Medical Center
Los Angeles, California



2005 – 2008
Type of Program: Gastroenterology and Liver Diseases
Facility/Institution: LAC+USC Medical Center
Los Angeles, California
PGY 6 year of training included 6 months of dedicated ERCP training



State Medical License – CA
Licensing Body: Medical Board of California
Year: 2004
Status: Active


DEA License
Licensing Body: Drug Enforcement Agency
Year: 2004
Status: Active


Board Certification – Internal Medicine
Licensing Body: American Board of Internal Medicine
Year: 7/2005


Board Certification – Gastroenterology
Licensing Body: American Board of Internal Medicine
Year: 10/2009


See above for details of the following clinical awards: Super Doctor, Castle Connolly’s Top Doctors Award, Patient’s Choice Award, Compassionate Doctor Recognition, On-Time Doctor Award

Resident of the year award in all three years of residency training (2003, 2004, 2005)
Eric Cohen Clinical Medicine Scholarship Award – Keck/USC School of Medicine (2002)


Languages spoken: Spanish, Farsi, English




  1. Routine Choledochoscopy During Endoscopic Retrograde CholangioPancreatography (ERCP): Is It Useful? First Hundred Cases. Abstract DDW 2008.
  2. Occult hepatic opportunistic infection (OI) and highly active antiretroviral therapy (HAART) induced immune reconstitution: an important cause of jaundice in a patient with AIDS. AIDS Res Hum Retroviruses. 2006 Oct;22(10):1052-3.
  3. Effect of frequent dosing of an oral proton pump inhibitor on intragastric pH. Aliment Pharmacol Ther. 2006 Jun 1;23(11):1607-13.
  4. Isolated hepatic metastasis from a gastrointestinal stromal tumor (GIST) 17 years after initial resection: need for long-term surveillance. J Clin Gastroenterol. 2005 Nov-Dec;39(10):925.
  5. Severe cholestatic liver injury days after initiating antiretroviral therapy in a patient with AIDS: drug toxicity or immune reconstitution inflammatory syndrome? Dig Dis Sci. 2005 Oct;50(10):1813-7.
  6. Gastrointestinal stromal tumors: clinical profile, pathogenesis, treatment strategies and prognosis. J Gastroenterol Hepatol. 2005 Jun;20(6):818-24.