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

MS. Helen E. Callahan, CRNP

Individual provider Registered Nurse · NPI 1215937883

MS. Helen E. Callahan, CRNP is a Nurse Practitioner in Tucson, Arizona. Qualified in 2004, 22 years ago. Practices with Tucson Physician Group Holdings LLC, a 199-clinician group and accepts Medicare assignment. Licensed in Arizona and Pennsylvania.

Years since qualifying
22
Licensed in
AZ, PA
In the registry since
2005
Specialties on file
2
What do these letters mean?
CRNP — Certified Registered Nurse Practitioner
The title Pennsylvania and some other states use for a nurse practitioner.

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Practice location Address checks out

4892 N Stone Ave Ste 100 Ste 504 The Center For Diabetes & Endocrine Health
Tucson, AZ 85704-5761
Phone: (520) 396-1360
Fax: (520) 795-9043
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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 AP3324 (AZ)
Registered Nurse Taxonomy 163W00000X · Licence SP008353 (PA)

Record details

NPI number1215937883
Entity typeIndividual (Type 1)
GenderFemale
Credentials CRNP
Sole proprietorNo
NPI enumeratedJuly 26, 2005
Last updated in NPPESOctober 25, 2016

Medicare enrollment

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

Medicare specialtyNURSE PRACTITIONER
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice Tucson Physician Group Holdings Llc — 199 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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