Sajen Mathews, MD
NPI 1326048323ActiveIndividual· Internal Medicine, Gastroenterology· Fullerton, CA
Internal Medicine, Gastroenterology (MD) with Providence Medical Foundation, practicing in Fullerton, California. Their prescriptions cost Medicare Part D more than their services did: $335,020 for 980 claims, against $67,138 paid for services in 2024. Abbvie Inc. was the largest of 15 companies reporting payments in 2025, $2,430 in all, mostly food and beverage. Lists Providence St. Jude Medical Center as a hospital affiliation.
Overview
| NPI | 1326048323 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 1, 2005 |
| Last updated in NPPES | Oct 22, 2024 |
| Certified by provider | Oct 22, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | A53370 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 340 |
|---|---|
| Services billed | 705 across 25 procedure codes |
| Paid by Medicare | $67,138 |
Part D prescriptions in 2024
| Prescriptions (claims) | 980 · 1,911 30-day fills |
|---|---|
| Patients | 285 |
| Total drug cost | $335,020 |
| Generic share | 93% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Providence Medical FoundationVictorville, CA · 1,466 clinicians
Hospital affiliation
- Providence St. Jude Medical CenterFullerton, CA
Industry payments (Open Payments)
- 2025$2,430 · 101 payments from 15 companies
- 2024$2,382 · 99 payments from 16 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $654.70 | 34 |
| Janssen Biotech, Inc. | $278.97 | 13 |
| Pfizer Inc. | $207.86 | 7 |
| Ipsen Biopharmaceuticals, Inc | $176.82 | 3 |
| Ardelyx, Inc. | $171.27 | 8 |
What the 2025 payments were for
- Food and Beverage$2,430 · 101 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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