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

Wilfor Jhonathan Diaz Fernandez, MC

Individual provider Gastroenterology Physician · NPI 1134611817

Wilfor Jhonathan Diaz Fernandez, MC practises Gastroenterology in Rochester, Minnesota. Qualified in 2014, 12 years ago. Practices with Mayo Clinic, a 4,796-clinician group, works from 2 locations, accepts Medicare assignment and offers telehealth. Licensed in Minnesota.

Years since qualifying
12
Licensed in
MN
In the registry since
2018
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Practice location Address checks out

200 1st St SW
Rochester, MN 55905-0001
Phone: (507) 284-2511
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 621 S New Ballas Rd, Saint Louis, MO 63141-8232 — (314) 509-5305

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence 79901 (MN)

Record details

NPI number1134611817
Entity typeIndividual (Type 1)
GenderMale
Credentials MC
Sole proprietorNo
NPI enumeratedMay 30, 2018
Last updated in NPPESJune 18, 2025
Certification dateJune 18, 2025

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolOTHER
Graduated 2014 (12 years in practice)
Group practice Mayo Clinic — 4796 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

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 patients294
Services billed 329 a service is one billed item, such as a visit, a test or a procedure
Average patient age79

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

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 4796 clinicians in the practice; 12 are shown here.

Other providers in Rochester