Marietta Lim Uy, MD
NPI 1891781290ActiveIndividual· Internal Medicine· Phoenix, AZ
Internal Medicine (MD) in Phoenix, Arizona, licensed in AZ, with an NPI issued in September 2005. Their prescriptions cost Medicare Part D more than their services did: $281,307 for 4,062 claims, against $143,981 paid for services in 2024.
Overview
| NPI | 1891781290 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 21, 2005 |
| Last updated in NPPES | Aug 25, 2026 |
| Certified by provider | Aug 25, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 24339 | 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) | Not in the public enrollment file of Oct 1, 2026 |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 220 |
|---|---|
| Services billed | 1,534 across 5 procedure codes |
| Paid by Medicare | $143,981 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,062 · 4,557 30-day fills |
|---|---|
| Patients | 324 |
| Total drug cost | $281,307 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 1987 |
|---|---|
| Medicare specialty | Internal Medicine |
Other facilities
- Arizona American Hospice, LLCHospice · Phoenix, AZ
- Arizona Hospice Care IncHospice · Phoenix, AZ
- Primavera Hospice LLCHospice · Glendale, AZ
- Chandler Post Acute and RehabilitationNursing home · Chandler, AZ
- Sante of ChandlerNursing home · Chandler, 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 881 internal medicine physicians in Phoenix · All internal medicine physicians in Arizona