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

John Charles Sauer, FNP

Individual provider Family Nurse Practitioner · NPI 1588136998

John Charles Sauer, FNP is a Nurse Practitioner in Ajo, Arizona. Qualified in 2018, 8 years ago. Practices with Oak Street Health Physicians Group of Arizona PLLC, a 76-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
8
Licensed in
AZ
In the registry since
2018
Specialties on file
2
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

See every abbreviation used in this directory →

Practice location Address checks out

410 N Malacate St
Ajo, AZ 85321-2254
Phone: (520) 387-5651
Fax: (520) 387-5347
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 183 W Apache Trl Ste B109, Apache Junction, AZ 85120-3425 — (480) 618-0945

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence 220392 (AZ)
Family Medicine Physician Taxonomy 207Q00000X · Licence 220392 (AZ)

Record details

NPI number1588136998
Entity typeIndividual (Type 1)
GenderMale
Credentials FNP
Sole proprietorYes
NPI enumeratedDecember 23, 2018
Last updated in NPPESAugust 7, 2025
Certification dateAugust 7, 2025
Mailing address410 N. Malacate St., Ajo, AZ 85321

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2018 (8 years in practice)
Group practice Oak Street Health Physicians Group Of Arizona Pllc — 76 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Ajo