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
Mailing address3501 E Speedway Blvd, 300, Tucson, AZ 85716-3917

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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