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

Individual provider Family Nurse Practitioner · NPI 1861419566

Karl Matthew Stempel, FNP is a Nurse Practitioner in Tucson, Arizona. Qualified in 2005, 21 years ago. Practices with Nextcare Arizona I Jv LLC, a 301-clinician group and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
21
Licensed in
AZ
In the registry since
2006
What do these letters mean?
FNP — Family Nurse Practitioner
A nurse practitioner who treats patients of all ages, much like a family doctor.

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Practice location Address checks out

4685 E Grant Rd
Tucson, AZ 85712-2618
Phone: (855) 925-4733
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence AP2226 (AZ)

Record details

NPI number1861419566
Entity typeIndividual (Type 1)
GenderMale
Credentials FNP
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESMarch 30, 2018

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 Nextcare Arizona I Jv Llc — 301 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations6 on file with Medicare

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