Andres Zimmermann, MD
NPI 1114904422ActiveIndividual· Internal Medicine, Geriatric Medicine· Oceanside, CA
Internal Medicine, Geriatric Medicine (MD) in Oceanside, California, licensed in CA, with an NPI issued in December 2005. Their prescriptions cost Medicare Part D more than their services did: $686,610 for 7,818 claims, against $95,923 paid for services in 2024. Solventum Corporation was the largest of 2 companies reporting payments in 2025, $110.12 in all, mostly food and beverage. Lists Tri-City Medical Center as a hospital affiliation.
Overview
| NPI | 1114904422 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Dec 28, 2005 |
| Last updated in NPPES | Mar 7, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Geriatric Medicine Primary | 207RG0300X | A71687 | 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 | 252 |
|---|---|
| Services billed | 1,102 across 33 procedure codes |
| Paid by Medicare | $95,923 |
Part D prescriptions in 2024
| Prescriptions (claims) | 7,818 · 18,907 30-day fills |
|---|---|
| Patients | 583 |
| Total drug cost | $686,610 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Geriatric Medicine |
Hospital affiliation
- Tri-City Medical CenterOceanside, CA
Other facilities
- Archer Health IncHome health agency · Carlsbad, CA
- Lorian HealthHome health agency · San Diego, CA
Industry payments (Open Payments)
- 2025$110.12 · 4 payments from 2 companies
- 2024$188.80 · 7 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Solventum Corporation | $68.84 | 1 |
| Astrazeneca Pharmaceuticals LP | $41.28 | 3 |
What the 2025 payments were for
- Food and Beverage$110.12 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other geriatricians in Oceanside
- 1619940095
- 1831240159