Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Gretchen Johns, MD

Individual provider Clinical Pathology/Laboratory Medicine Physician · NPI 1750301172

Gretchen Johns, MD practises Pathology in Jacksonville, Florida. Qualified in 1995, 31 years ago. Practices with Mayo Clinic Jacksonville, a 1,581-clinician group and accepts Medicare assignment. Licensed in Florida.

Years since qualifying
31
Licensed in
FL
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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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

Clinical Pathology/Laboratory Medicine Physician (primary) Taxonomy 207ZP0105X · Licence ME102727 (FL)

Record details

NPI number1750301172
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 20, 2006
Last updated in NPPESOctober 7, 2020
Certification dateOctober 7, 2020

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolOTHER
Graduated 1995 (31 years in practice)
Group practice Mayo Clinic Jacksonville — 1581 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients7,310
Services billed 17,979 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at Mayo Clinic Jacksonville

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1581 clinicians in the practice; 12 are shown here.

Other providers in Jacksonville