Watson A. Desa, MD
NPI 1235185620ActiveIndividual· Internal Medicine, Interventional Cardiology· Los Alamitos, CA
Internal Medicine, Interventional Cardiology (MD) in Los Alamitos, California, licensed in CA, with an NPI issued in May 2006. In 2024 Medicare paid $61,440 for 446 patients, and Part D covered 459 of their prescriptions, 81% of them generic. Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $24.86 in payments in 2025, mostly food and beverage. Lists St Mary Medical Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1235185620 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 26, 2006 |
| Last updated in NPPES | Apr 13, 2023 |
| Certified by provider | Apr 13, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Interventional Cardiology Primary | 207RI0011X | A32717 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Cardiovascular Disease (Cardiology) (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 446 |
|---|---|
| Services billed | 1,188 across 24 procedure codes |
| Paid by Medicare | $61,440 |
Part D prescriptions in 2024
| Prescriptions (claims) | 459 · 785 30-day fills |
|---|---|
| Patients | 49 |
| Total drug cost | $51,636 |
| Generic share | 81% of claims |
Education and affiliations
| Graduation year | 1973 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- St Mary Medical CenterLong Beach, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$24.86 · 1 payment from 1 company
- 2024$10.69 · 2 payments from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $24.86 | 1 |
What the 2025 payments were for
- Food and Beverage$24.86 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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