Maristela Manuel Carreon, M.D.
NPI 1376693952ActiveIndividual· Internal Medicine· Merced, CA
Internal Medicine (M.D.) with Provident Primary Care Inc, practicing in Merced, California. Their prescriptions cost Medicare Part D more than their services did: $107,493 for 1,166 claims, against $54,736 paid for services in 2024. Novo Nordisk Inc was the largest of 5 companies reporting payments in 2025, $227.20 in all, mostly food and beverage. Lists Mercy Medical Center as a hospital affiliation.
Overview
| NPI | 1376693952 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Jan 12, 2007 |
| Last updated in NPPES | Feb 23, 2024 |
| Certified by provider | Feb 23, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | C50505 | CA |
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 (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 181 |
|---|---|
| Services billed | 882 across 32 procedure codes |
| Paid by Medicare | $54,736 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,166 · 2,633 30-day fills |
|---|---|
| Patients | 164 |
| Total drug cost | $107,493 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 1989 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Provident Primary Care IncMerced, CA · 10 clinicians
Hospital affiliation
- Mercy Medical CenterMerced, CA
Other facilities
- Mercy Home CareHome health agency · Merced, CA
Industry payments (Open Payments)
- 2025$227.20 · 5 payments from 5 companies
- 2024$810.36 · 18 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $92.86 | 1 |
| Glaxosmithkline, LLC. | $73.45 | 1 |
| Philips North America LLC | $21.96 | 1 |
| Lilly USA, LLC | $19.60 | 1 |
| Astrazeneca Pharmaceuticals LP | $19.33 | 1 |
What the 2025 payments were for
- Food and Beverage$227.20 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 21 internal medicine physicians in Merced · All internal medicine physicians in California