Gustavo Riffel, M.D.
NPI 1588068415ActiveIndividual· Internal Medicine· Phoenix, AZ
Internal Medicine (M.D.) with Greater Phoenix Collaborative Care PC, practicing in Phoenix, Arizona. Their prescriptions cost Medicare Part D more than their services did: $827,218 for 10,014 claims, against $24,617 paid for services in 2024. Exact Sciences Corporation reported $24.45 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1588068415 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 21, 2014 |
| Last updated in NPPES | Sep 16, 2022 |
| Certified by provider | Sep 16, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 54534 | 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 | 137 |
|---|---|
| Services billed | 357 across 26 procedure codes |
| Paid by Medicare | $24,617 |
Part D prescriptions in 2024
| Prescriptions (claims) | 10,014 · 22,521 30-day fills |
|---|---|
| Patients | 798 |
| Total drug cost | $827,218 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Greater Phoenix Collaborative Care PCSurprise, AZ · 107 clinicians
Other facilities
- D'Amore Hospice, LLCHospice · Phoenix, AZ
Industry payments (Open Payments)
- 2025$24.45 · 1 payment from 1 company
- 2024$116.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $24.45 | 1 |
What the 2025 payments were for
- Food and Beverage$24.45 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 881 internal medicine physicians in Phoenix · All internal medicine physicians in Arizona