Colleen Anne Gumm, NP
NPI 1568485951ActiveIndividual· Nurse Practitioner, Gerontology· Tucson, AZ
Nurse Practitioner, Gerontology (NP) with Oak Street Health Physicians Group of Arizona PLLC, practicing in Tucson, Arizona. Their prescriptions cost Medicare Part D more than their services did: $291,131 for 3,514 claims, against $10,183 paid for services in 2024. Abbott Laboratories reported $55.51 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1568485951 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Jul 26, 2006 |
| Last updated in NPPES | Nov 12, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Gerontology Primary | 363LG0600X | AP2459 | AZ |
| Registered Nurse, Gerontology | 163WG0600X | RN104226 | AZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 117 |
|---|---|
| Services billed | 210 across 19 procedure codes |
| Paid by Medicare | $10,183 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,514 · 9,295 30-day fills |
|---|---|
| Patients | 480 |
| Total drug cost | $291,131 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 1998 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Oak Street Health Physicians Group of Arizona PLLCMesa, AZ · 81 clinicians
Other facilities
- Banner Home Care-ArizonaHome health agency · Mesa, AZ
Industry payments (Open Payments)
- 2025$55.51 · 2 payments from 1 company
- 2024$561.89 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbott Laboratories | $55.51 | 2 |
What the 2025 payments were for
- Food and Beverage$55.51 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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