Lauren Marie Mathias, M.D.
NPI 1912361072ActiveIndividual· Internal Medicine, Rheumatology· Downey, CA
Internal Medicine, Rheumatology (M.D.) with University Primary Care Practices Inc and 1 other group, practicing in Downey, California. Their prescriptions cost Medicare Part D more than their services did: $1,463,277 for 1,686 claims, against $52,595 paid for services in 2024. Amgen Inc. was the largest of 14 companies reporting payments in 2025, $1,211 in all, mostly food and beverage. Lists Lake Health and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1912361072 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Apr 5, 2016 |
| Last updated in NPPES | Aug 13, 2021 |
| Certified by provider | Aug 13, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | A155072 | 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 - Rheumatology (OH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 249 |
|---|---|
| Services billed | 602 across 14 procedure codes |
| Paid by Medicare | $52,595 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,686 · 3,655 30-day fills |
|---|---|
| Patients | 322 |
| Total drug cost | $1,463,277 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2012 |
|---|---|
| Medicare specialty | Rheumatology |
| Telehealth | Offers telehealth |
Medical groups
- University Primary Care Practices IncConneaut, OH · 1,079 clinicians
- Mrs Physical TherapyErie, PA · 182 clinicians
Hospital affiliations
- Lake HealthConcord, OH
- Parma Community General HospitalParma, OH
- Uh Cleveland Medical CenterCleveland, OH
- University Hospitals Ahuja Medical CenterBeachwood, OH
- University Hospitals Portage Medical CenterRavenna, OH
Industry payments (Open Payments)
- 2025$1,211 · 56 payments from 14 companies
- 2024$1,276 · 59 payments from 15 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $214.82 | 10 |
| Ucb, Inc. | $169.22 | 10 |
| Pfizer Inc. | $148.15 | 9 |
| Janssen Biotech, Inc. | $136.36 | 4 |
| Mallinckrodt Hospital Products Inc. | $113.47 | 4 |
What the 2025 payments were for
- Food and Beverage$1,156 · 55 payments
- Education$54.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All Internal Medicine, Rheumatology providers in California →