Dr. Grant Eric Barber, MD

Dr. Barber practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.

Dr. Barber's NPI, 1528422847, was assigned on April 12, 2016. Dr. Barber graduated from Harvard Medical School in 2016. Dr. Barber's California license number on file is A151462.

Dr. Barber's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.

Dr. Barber's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Barber to 1 more hospital and 1 medical group, each named with a free account. Dr. Barber's employer is on file too: a hospital.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barber practices, 2 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Barber's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Barber is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Barber has a license on file in California.

Dmand AI lists acid reflux, cardiac arrhythmia, chronic inflammatory bowel disease (IBD), cirrhosis, dementia, gastroenteritis, gastrointestinal bleeding and gastrointestinal inflammation among the conditions Dr. Barber treats.

CMS data shows 235 Medicare services from Dr. Barber across 9 procedure codes in 2024, for 139 Medicare patients. Medicare paid $27,165 for them.

CMS counts 139 Medicare patients who saw Dr. Barber in 2024. The largest group is 65 to 74, with 74 patients. 75% of them have high cholesterol, and 71% have high blood pressure. 32% are also on Medicaid. Their average risk score is 1.87, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.

Across all payers, Dmand AI patient panel data puts Dr. Barber's median patient age at 43, with 46% women.

In 2024, Dr. Barber wrote 150 Medicare Part D claims for 69 patients. 71% of them were for generic drugs. CMS names the drug for 43 of them, across 2 drugs with 11 or more claims each, at $1,075 in total drug cost. In 2023, CMS named 69 claims across 3 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Barber for performance year 2024, reported as part of a group. Dr. Barber accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Barber as offering telehealth. CMS counts 24 procedures of upper gastrointestinal (gi) endoscopy for acid reflux by Dr. Barber, more than 52% of the clinicians it reports for that procedure.

Dmand AI links 12 papers to Dr. Barber, published from 2015 to 2025. 2016 was the busiest year, with 2. The most frequent topics are Colitis, Ulcerative. Dr. Barber's most frequent co-authors are Sarah Elizabeth Streett, MD, Steven Hendler and Kian Keyashian, MD.

CMS Open Payments shows 6 general payments to Dr. Barber from 2 drug and device companies from 2021 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $397.

Dr. Barber graduated from Harvard Medical School in 2016.

Dr. Barber is in network with 7 carriers, including Aetna, Blue Cross Blue Shield of Michigan and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.