Cassandra Ballantyne, MD
NPI 1851973192ActiveIndividual· Internal Medicine· Tucson, AZ
Internal Medicine (MD) in Tucson, Arizona, trained at University of North Dakota School of Medicine (class of 2021). Their prescriptions cost Medicare Part D more than their services did: $111,967 for 993 claims, against $14,133 paid for services in 2024.
Overview
| NPI | 1851973192 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Apr 26, 2021 |
| Last updated in NPPES | Nov 19, 2024 |
| Certified by provider | Nov 19, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | R78555 | AZ |
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 - Internal Medicine (AZ) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 83 |
|---|---|
| Services billed | 269 across 29 procedure codes |
| Paid by Medicare | $14,133 |
Part D prescriptions in 2024
| Prescriptions (claims) | 993 · 2,299 30-day fills |
|---|---|
| Patients | 407 |
| Total drug cost | $111,967 |
| Generic share | 84% of claims |
Education and affiliations
| Medical school | University of North Dakota School of Medicine |
|---|---|
| Graduation year | 2021 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Greater Phoenix Collaborative Care PCSurprise, AZ · 107 clinicians
Hospital affiliations
- St Joseph's HospitalTucson, AZ
- Tucson Medical CenterTucson, AZ
Other facilities
- Bayada Home Health Care, IncHome health agency · Tucson, AZ
- Dependable Home Health, IncHome health agency · Tucson, AZ
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 742 internal medicine physicians in Tucson · All internal medicine physicians in Arizona