Helen E. Callahan, CRNP
NPI 1215937883ActiveIndividual· Nurse Practitioner· Tucson, AZ
Nurse Practitioner (CRNP) with Tucson Physician Group Holdings LLC, practicing in Tucson, Arizona. Their prescriptions cost Medicare Part D more than their services did: $175,703 for 2,135 claims, against $138.40 paid for services in 2024.
Overview
| NPI | 1215937883 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP |
| Sole proprietor | No |
| NPI issued | Jul 26, 2005 |
| Last updated in NPPES | Oct 25, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | AP3324 | AZ |
| Registered Nurse | 163W00000X | SP008353 | PA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 16 |
|---|---|
| Services billed | 16 across 1 procedure code |
| Paid by Medicare | $138.40 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,135 · 5,044 30-day fills |
|---|---|
| Patients | 830 |
| Total drug cost | $175,703 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2004 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Tucson Physician Group Holdings LLCTucson, AZ · 201 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 222 nurse practitioners in Tucson · All nurse practitioners in Arizona