Joseph Manuel Alonzo, M.D.
NPI 1225077050ActiveIndividual· Internal Medicine· Covina, CA
Internal Medicine (M.D.) in Covina, California, trained at University of California, Geffen School of Medicine (class of 1984). Their prescriptions cost Medicare Part D more than their services did: $1,067,845 for 11,934 claims, against $19,332 paid for services in 2024.
Overview
| NPI | 1225077050 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 6, 2006 |
| Last updated in NPPES | Dec 3, 2025 |
| Certified by provider | Dec 3, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | A45798 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 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 | 89 |
|---|---|
| Services billed | 353 across 45 procedure codes |
| Paid by Medicare | $19,332 |
Part D prescriptions in 2024
| Prescriptions (claims) | 11,934 · 29,587 30-day fills |
|---|---|
| Patients | 940 |
| Total drug cost | $1,067,845 |
| Generic share | 88% of claims |
Education and affiliations
| Medical school | University of California, Geffen School of Medicine |
|---|---|
| Graduation year | 1984 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Healthcare Partners Affiliates Medical GroupAnaheim, CA · 754 clinicians
Other facilities
- Lakeview Hospice Care IncHospice · Burbank, CA
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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