Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Denise Harnois, DO

Individual provider Gastroenterology Physician · NPI 1710976683

Denise Harnois, DO is a Gastroenterology in Jacksonville, Florida. Graduated from Philadelphia College of Osteopathic Medicine in 1990, 36 years ago. Practices with Mayo Clinic Jacksonville, a 1,581-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Florida.

Years since qualifying
36
Trained at
Philadelphia College of Osteopathic Medicine
Licensed in
FL
In the registry since
2005
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

4500 San Pablo Rd S
Jacksonville, FL 32224-1865
Phone: (904) 953-2000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence OS7819 (FL)

Record details

NPI number1710976683
Entity typeIndividual (Type 1)
GenderFemale
Credentials DO
Sole proprietorNo
NPI enumeratedOctober 13, 2005
Last updated in NPPESAugust 31, 2020
Certification dateAugust 31, 2020
Mailing address4500 San Pablo Rd S, Jacksonville, FL 32224-1865

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyGASTROENTEROLOGY
Medical schoolPHILADELPHIA COLLEGE OF OSTEOPATHIC MEDICINE
Graduated 1990 (36 years in practice)
Group practice Mayo Clinic Jacksonville — 1581 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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