Dr. Jeremy Fields, MD

Dr. Fields practices at McFarland Clinic - 1215 Duff Avenue Office in Ames, Iowa.

Dr. Fields' NPI, 1285844142, was assigned on May 22, 2007. Dr. Fields holds Iowa license 37948.

Dr. Fields' primary practice is McFarland Clinic - 1215 Duff Avenue Office, at 1215 Duff Ave, Ames, IA 50010. The practice phone is (515) 239-4436.

Dr. Fields' primary practice is McFarland Clinic - 1215 Duff Avenue Office in Ames, Iowa. Dr. Fields is also affiliated with Mary Greeley Medical Center. The medical group on file is McFarland Clinic. Dmand AI also links Dr. Fields to 2 more hospitals and 1 group practice or clinic, each named with a free account. Dr. Fields' employer is on file too: a breast imaging center.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fields practices, 5 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Fields' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Fields is licensed in Iowa.

CMS data shows 1,866 Medicare services from Dr. Fields across 23 procedure codes in 2024, for 698 Medicare patients. Medicare paid $120,653 for them.

CMS counts 698 Medicare patients who saw Dr. Fields in 2024. The largest group is 65 to 74, with 425 patients. 75% of them have high cholesterol, and 67% have high blood pressure. 6% are also on Medicaid. Their average risk score is 1.21, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Fields' median patient age at 64, with 51% women.

In 2024, Dr. Fields wrote 1,504 Medicare Part D claims for 650 patients. 88% of them were for generic drugs. CMS names the drug for 1,408 of them, across 21 drugs with 11 or more claims each, at $196,790 in total drug cost. In 2023, CMS named 1,319 claims across 26 drugs.

Dr. Fields accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 358 procedures of colonoscopy by Dr. Fields, more than 98% of the clinicians it reports for that procedure.

Dmand AI links 30 papers to Dr. Fields, published from 2010 to 2025. 2015 was the busiest year, with 4. The most frequent topics are Colorectal Neoplasms, Colon and Signal Transduction. Dr. Fields has published most often in bioRxiv. Dr. Fields' most frequent co-authors are Bruce M. Boman, MD, Vignesh Viswanathan, MD and Juan Pablo Palazzo, MD.

CMS Open Payments shows 8 general payments to Dr. Fields from 4 drug and device companies from 2022 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $69.