Andrea Isabela Zambrano, MD
NPI 1992066336ActiveIndividual· Internal Medicine, Infectious Disease· Santa Barbara, CA
Internal Medicine, Infectious Disease (MD) with Sansum Clinic, practicing in Santa Barbara, California. Their prescriptions cost Medicare Part D more than their services did: $1,214,245 for 947 claims, against $71,952 paid for services in 2024. Gilead Sciences, Inc. was the largest of 10 companies reporting payments in 2025, $1,741 in all, mostly food and beverage. Lists Goleta Valley Cottage Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1992066336 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jun 1, 2012 |
| Last updated in NPPES | Jan 10, 2022 |
| Certified by provider | Jan 10, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Infectious Disease Primary | 207RI0200X | A154238 | 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 - Infectious Disease (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 244 |
|---|---|
| Services billed | 723 across 25 procedure codes |
| Paid by Medicare | $71,952 |
Part D prescriptions in 2024
| Prescriptions (claims) | 947 · 1,180 30-day fills |
|---|---|
| Patients | 165 |
| Total drug cost | $1,214,245 |
| Generic share | 77% of claims |
Education and affiliations
| Graduation year | 2008 |
|---|---|
| Medicare specialty | Infectious Disease |
| Telehealth | Offers telehealth |
Medical group
- Sansum ClinicSanta Barbara, CA · 320 clinicians
Hospital affiliations
- Goleta Valley Cottage HospitalSanta Barbara, CA
- Santa Barbara Cottage HospitalSanta Barbara, CA
- Santa Ynez Valley Cottage HospitalSolvang, CA
Other facilities
- Central Coast Home Health IncHome health agency · San Luis Obispo, CA
Industry payments (Open Payments)
- 2025$1,741 · 71 payments from 10 companies
- 2024$1,341 · 46 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Gilead Sciences, Inc. | $526.72 | 25 |
| Viiv Healthcare Company | $391.71 | 9 |
| Melinta Therapeutics, LLC | $155.02 | 15 |
| Paratek Pharmaceuticals, Inc. | $142.59 | 5 |
| La Jolla Pharmaceutical Company | $136.78 | 2 |
What the 2025 payments were for
- Food and Beverage$1,741 · 71 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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