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

Mary Littlehorn, FNP

Individual provider Emergency Registered Nurse · NPI 1952645558

Mary Littlehorn, FNP is a Nurse Practitioner in Tucson, Arizona. Qualified in 2012, 14 years ago. Practices with Ironwood Dermatology, PC, a 10-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Arizona.

Years since qualifying
14
Licensed in
AZ
In the registry since
2012
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.

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Practice location Address checks out

2732 N Alvernon Way
Tucson, AZ 85712-1804
Phone: (520) 382-3330
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 5304 E. Grant Rd., Tucson, AZ 85712 — (520) 324-5070

Specialties & licences

Family Nurse Practitioner (primary) Taxonomy 363LF0000X · Licence F0113199 (AZ)
Emergency Registered Nurse Taxonomy 163WE0003X · Licence RN133474 (AZ)

Record details

NPI number1952645558
Entity typeIndividual (Type 1)
GenderFemale
Credentials FNP
Sole proprietorNo
NPI enumeratedNovember 20, 2012
Last updated in NPPESJuly 6, 2021
Certification dateJuly 6, 2021

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Group practice Ironwood Dermatology, Pc — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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