Dr. Denise M. Harnois, DO

Dr. Harnois practices at Mayo Clinic Hospital in Jacksonville, Florida, part of Mayo Clinic.

Dr. Harnois' NPI, 1710976683, was assigned on October 13, 2005. Dr. Harnois graduated from Pcom in 1990. Dr. Harnois holds Florida license OS7819.

Dr. Harnois' primary practice is Mayo Clinic Hospital, at 4500 San Pablo Rd, Jacksonville, FL 32224 in Duval County. The practice phone is (904) 953-2000.

Dr. Harnois' primary practice is Mayo Clinic Hospital in Jacksonville, Florida, part of Mayo Clinic. Dr. Harnois is also affiliated with Baptist Medical Center Jacksonville. The medical group on file is Mayo Clinic Jacksonville. Dmand AI also links Dr. Harnois to 1 more hospital, named with a free account.

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Harnois practices, 3 sites in all. Vendor and product names are available with a free account.

Gastroenterology is Dr. Harnois' primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Harnois is board certified in gastroenterology by the American Board of Internal Medicine. Dr. Harnois is licensed in Florida.

Dmand AI lists cirrhosis, cirrhosis of the liver, colonoscopy, fatty liver, gastrointestinal obstruction, liver disease and upper GI endoscopy among the conditions Dr. Harnois treats.

CMS data shows 374 Medicare services from Dr. Harnois across 9 procedure codes in 2024, for 210 Medicare patients. Medicare paid $36,418 for them.

CMS counts 210 Medicare patients who saw Dr. Harnois in 2024. The largest group is 65 to 74, with 135 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 7% are also on Medicaid. Their average risk score is 1.93, 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. Harnois' median patient age at 65, with 48% women.

In 2024, Dr. Harnois wrote 1,109 Medicare Part D claims for 221 patients. 89% of them were for generic drugs. CMS names the drug for 893 of them, across 22 drugs with 11 or more claims each, at $441,610 in total drug cost. In 2023, CMS named 625 claims across 16 drugs.

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 84 out of 100 for Dr. Harnois for performance year 2024, reported as part of a group. Dr. Harnois accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Harnois as offering telehealth.

Colonoscopy: 1 to 10 procedures (CMS shows small counts as a range)

Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)

Dmand AI links 93 papers to Dr. Harnois, published from 2007 to 2025. 2021 was the busiest year, with 6. The most frequent topics are Liver Transplantation, Liver Neoplasms and Carcinoma, Hepatocellular. Dr. Harnois has published most often in Liver Transpl. Dr. Harnois' most frequent co-authors are Justin H. Nguyen, MD, Rolland Collier Dickson, MD and Andrew P. Keaveny, MD.

CMS Open Payments shows 13 general payments to Dr. Harnois from 2 drug and device companies from 2016 to 2017. Travel and lodging make up the largest share, 83% of the total. Sirtex Medical Inc paid the most, $4,007.

Dmand AI lists 2 awards for Dr. Harnois, most recently AGA Fellow in 2010.

Dr. Harnois graduated from Pcom in 1990. Dr. Harnois is a member of AGA.

Dr. Harnois is in network with 9 carriers, including Elevance, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. POS plans come from the most carriers, 5. Check the plan with the practice before a visit.