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

Mrs. Gertrude Areja Oster, APRN

Individual provider Family Nurse Practitioner · NPI 1265611537

Mrs. Gertrude Areja Oster, APRN is a Nurse Practitioner in Tucson, Arizona. Qualified in 2005, 21 years ago. Practices with Akdhc LLC, a 126-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
21
Licensed in
AZ
In the registry since
2007
Specialties on file
2
What do these letters mean?
APRN — Advanced Practice Registered Nurse
The umbrella licence covering nurse practitioners, midwives, anaesthetists and clinical nurse specialists.

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Practice location Address checks out

4511 N Campbell Ave Ste 100
Tucson, AZ 85718-6424
Phone: (520) 529-6500
Fax: (520) 209-7337
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Nurse Practitioner (primary) Taxonomy 363L00000X · Licence AP2816 (AZ)
Family Nurse Practitioner Taxonomy 363LF0000X · Licence AP2816 (AZ)

Record details

NPI number1265611537
Entity typeIndividual (Type 1)
GenderFemale
Credentials APRN
Sole proprietorNo
NPI enumeratedNovember 2, 2007
Last updated in NPPESNovember 22, 2019

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2005 (21 years in practice)
Group practice Akdhc Llc — 126 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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