Alonso Benjamin Chan Jr., PA-C
NPI 1831525286ActiveIndividual· Physician Assistant· Chula Vista, CA
Physician Assistant (PA-C) with Monica Perlman MD Inc, practicing in Chula Vista, California. Their prescriptions cost Medicare Part D more than their services did: $525,495 for 4,123 claims, against $16,498 paid for services in 2024. Hologic Sales and Service, LLC was the largest of 10 companies reporting payments in 2025, $434.93 in all, mostly food and beverage.
Overview
| NPI | 1831525286 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Sep 17, 2013 |
| Last updated in NPPES | May 21, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 23195 | 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 - Physician Assistant (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 49 |
|---|---|
| Services billed | 314 across 27 procedure codes |
| Paid by Medicare | $16,498 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,123 · 9,072 30-day fills |
|---|---|
| Patients | 266 |
| Total drug cost | $525,495 |
| Generic share | 83% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Monica Perlman MD IncSan Diego, CA · 364 clinicians
Industry payments (Open Payments)
- 2025$434.93 · 18 payments from 10 companies
- 2024$421.30 · 19 payments from 11 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Hologic Sales and Service, LLC | $68.67 | 3 |
| Pfizer Inc. | $53.00 | 3 |
| Exact Sciences Corporation | $53.00 | 2 |
| Astrazeneca Pharmaceuticals LP | $47.87 | 2 |
| Lilly USA, LLC | $46.46 | 2 |
What the 2025 payments were for
- Food and Beverage$434.93 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 62 physician assistants in Chula Vista · All physician assistants in California