Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

E T AYALA MD
NPI 1821089541
Internal Medicine in Fond Du Lac, WI

Active since November 02, 2005
92 E DIVISION ST, FOND DU LAC, WI 54935(920) 921-0560 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About E T Ayala Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

E T AYALA MD (NPI 1821089541) is an individual internal medicine provider in Fond Du Lac, Wisconsin, licensed in Wisconsin (21604) and active in the NPI registry since November 2005.

NPPES Registry Identity

NPI1821089541
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameE T AYALACredential: MD
Location Address92 E DIVISION STFond Du Lac, WI 54935-4305
Mailing Address420 E Division StFond Du Lac, WI 54935-4560 · (920) 926-8340
Sole ProprietorNo
Enumeration DateNovember 2, 2005
Last NPPES UpdateJuly 13, 2026
NPI 1821089541 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License Licensed in WI · 21604
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
92 E DIVISION ST, Fond Du Lac, WI 54935

Other Identifiers 4

Other12617WI · Dean
Other21604WI · Touchpoint
OtherWI01B2WI · John Deere
Medicaid30334700WI

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is E Ayala's NPI number?

The NPI number for E Ayala is 1821089541. It was assigned to this individual provider in the NPPES registry on November 2, 2005.

Where is E Ayala located?

E Ayala practices at 92 E Division St, Fond Du Lac, WI 54935. The listed phone number is (920) 921-0560.

What is E Ayala's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

When was this NPI record last updated?

The NPPES record for E Ayala was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 35 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.