Dr. Michael James Krier, MD

Dr. Krier practices at NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare.

Dr. Krier's NPI, 1497808414, was assigned on January 21, 2007. Dr. Krier graduated from Boonshoft School of Medicine in 2004. Dr. Krier holds California license A100295.

Dr. Krier's primary practice is NorthBay Medical Center, at 1200 B Gale Wilson Blvd, Fairfield, CA 94533 in Solano County. The practice phone is (707) 646-5000.

Dr. Krier's primary practice is NorthBay Medical Center in Fairfield, California, part of NorthBay Healthcare. The medical group on file is NorthBay Medical Center. Dmand AI also links Dr. Krier to 1 more medical group, named with a free account.

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

Gastroenterology is Dr. Krier's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Krier is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Krier's licenses on file in 3 states: California, Washington and Nebraska.

Dmand AI lists acid reflux, acute gastroduodenitis, chronic inflammatory bowel disease (IBD), cirrhosis of the liver, colonoscopy, fatty liver, gastroduodenitis and gastroenteritis among the conditions Dr. Krier treats.

CMS data shows 1,473 Medicare services from Dr. Krier across 17 procedure codes in 2024, for 628 Medicare patients. Medicare paid $141,914 for them.

CMS counts 628 Medicare patients who saw Dr. Krier in 2024. The largest group is 65 to 74, with 316 patients. 75% of them have high cholesterol, and 74% have high blood pressure. 29% are also on Medicaid. Their average risk score is 1.62, 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. Krier's median patient age at 62, with 58% women.

In 2024, Dr. Krier wrote 1,478 Medicare Part D claims for 460 patients. 88% of them were for generic drugs. CMS names the drug for 1,249 of them, across 15 drugs with 11 or more claims each, at $120,226 in total drug cost. In 2023, CMS named 1,174 claims across 14 drugs.

Dr. Krier accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Krier as offering telehealth. CMS counts 153 procedures of colonoscopy by Dr. Krier, more than 89% of the clinicians it reports for that procedure.

Dmand AI links 9 papers to Dr. Krier, published from 2009 to 2018. 2009 was the busiest year, with 2. The most frequent topics are Colonoscopy, Diagnosis, Differential and Esophageal Neoplasms. Dr. Krier has published most often in Dig Dis Sci. Dr. Krier's most frequent co-authors are Tonya R. Kaltenbach, MD, Tohru Sato, MD and Aijaz Ahmed, MD.

CMS Open Payments shows 373 general payments to Dr. Krier from 42 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $2,136.

Dr. Krier graduated from Boonshoft School of Medicine in 2004.

Dr. Krier is in network with 15 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.