Michael S. Maehara, M.D.
NPI 1316969629ActiveIndividual· Internal Medicine, Rheumatology· Long Beach, CA
Internal Medicine, Rheumatology (M.D.) with Pih Health Physicians, practicing in Long Beach, California. Their prescriptions cost Medicare Part D more than their services did: $1,583,544 for 2,675 claims, against $35,171 paid for services in 2024. Glaxosmithkline, LLC. reported $16.50 in payments in 2025, mostly food and beverage. Lists Pih Health Downey Hospital and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1316969629 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 24, 2006 |
| Last updated in NPPES | Jul 15, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Rheumatology Primary | 207RR0500X | 39815 | CA |
| Internal Medicine, Rheumatology | 207RR0500X | A39815 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 208 |
|---|---|
| Services billed | 626 across 22 procedure codes |
| Paid by Medicare | $35,171 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,675 · 4,528 30-day fills |
|---|---|
| Patients | 422 |
| Total drug cost | $1,583,544 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1981 |
|---|---|
| Medicare specialty | Internal Medicine |
| Secondary specialties | Family Practice, Rheumatology |
Medical group
- Pih Health PhysiciansSanta Fe Springs, CA · 622 clinicians
Hospital affiliations
- Pih Health Downey HospitalDowney, CA
- Pih Health Hospital-WhittierWhittier, CA
- Uci Health-OrangeOrange, CA
Industry payments (Open Payments)
- 2025$16.50 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $16.50 | 1 |
What the 2025 payments were for
- Food and Beverage$16.50 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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