Mattie Guelinas
NPI 1538864954ActiveIndividual· Family Medicine· Flagstaff, AZ
Family Medicine with Urgent Care Northern Colorado, practicing in Flagstaff, Arizona. Their prescriptions cost Medicare Part D more than their services did: $90,816 for 790 claims, against $5,042 paid for services in 2024. Dynavax Technologies Corporation reported $75.01 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1538864954 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Apr 4, 2023 |
| Last updated in NPPES | Aug 13, 2026 |
| Certified by provider | Aug 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 337790 | 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 - Nurse Practitioner (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 48 |
|---|---|
| Services billed | 199 across 23 procedure codes |
| Paid by Medicare | $5,042 |
Part D prescriptions in 2024
| Prescriptions (claims) | 790 · 1,624 30-day fills |
|---|---|
| Patients | 115 |
| Total drug cost | $90,816 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 2022 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Urgent Care Northern ColoradoFort Collins, CO · 10 clinicians
Industry payments (Open Payments)
- 2025$75.01 · 1 payment from 1 company
- 2024$18.53 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Dynavax Technologies Corporation | $75.01 | 1 |
What the 2025 payments were for
- Food and Beverage$75.01 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 80 family medicine physicians in Flagstaff · All family medicine physicians in Arizona