Paymon Mesgarzadeh, M.D.
NPI 1023216892ActiveIndividual· Internal Medicine, Cardiovascular Disease· Fontana, CA
Internal Medicine, Cardiovascular Disease (M.D.) in Fontana, California, trained at Wayne State University School of Medicine (class of 2004). Their prescriptions cost Medicare Part D more than their services did: $323,966 for 2,260 claims, against $1,828 paid for services in 2024. Boston Scientific Corporation reported $23.47 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1023216892 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 3, 2007 |
| Last updated in NPPES | Nov 29, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | A109433 | 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 | 28 |
|---|---|
| Services billed | 37 across 11 procedure codes |
| Paid by Medicare | $1,828 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,260 · 6,732 30-day fills |
|---|---|
| Patients | 493 |
| Total drug cost | $323,966 |
| Generic share | 83% of claims |
Education and affiliations
| Medical school | Wayne State University School of Medicine |
|---|---|
| Graduation year | 2004 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Cardiovascular Disease (Cardiology) |
Medical group
- Southern California Permanente Medical GroupRedlands, CA · 11,293 clinicians
Hospital affiliation
- Kaiser Foundation Hospital Fontana/OntarioFontana, CA
Industry payments (Open Payments)
- 2025$23.47 · 1 payment from 1 company
- 2024$17.37 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $23.47 | 1 |
What the 2025 payments were for
- Food and Beverage$23.47 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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