Matthew Genyeh Mei, M.D.
NPI 1104069269ActiveIndividual· Internal Medicine, Hematology· Duarte, CA
Internal Medicine, Hematology (M.D.) in Duarte, California, trained at Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University (class of 2007). Their prescriptions cost Medicare Part D more than their services did: $465,428 for 114 claims, against $87,024 paid for services in 2024. Novartis Pharmaceuticals Corporation was the largest of 8 companies reporting payments in 2025, $313.38 in all, mostly food and beverage.
Overview
| NPI | 1104069269 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | Yes |
| NPI issued | Apr 19, 2009 |
| Last updated in NPPES | Nov 17, 2020 |
| Certified by provider | Nov 17, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology Primary | 207RH0000X | A107290 | CA |
| Internal Medicine | 207R00000X | A107290 | CA |
| Internal Medicine, Hematology & Oncology | 207RH0003X | A107290 | 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 - Hematology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 210 |
|---|---|
| Services billed | 1,283 across 25 procedure codes |
| Paid by Medicare | $87,024 |
Part D prescriptions in 2024
| Prescriptions (claims) | 114 · 142 30-day fills |
|---|---|
| Patients | 30 |
| Total drug cost | $465,428 |
| Generic share | 74% of claims |
Education and affiliations
| Medical school | Clvlnd Clinic Lerner College of Med of Case Wstn Rsv University |
|---|---|
| Graduation year | 2007 |
| Medicare specialty | Hematology |
| Telehealth | Offers telehealth |
Medical group
- City of Hope Medical FoundationDuarte, CA · 982 clinicians
Industry payments (Open Payments)
- 2025$313.38 · 11 payments from 8 companies
- 2024$297.22 · 7 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novartis Pharmaceuticals Corporation | $144.09 | 2 |
| Abbvie Inc. | $38.98 | 2 |
| Lilly USA, LLC | $33.35 | 2 |
| Genmab U.S., Inc. | $26.18 | 1 |
| Kite Pharma, Inc. | $22.81 | 1 |
What the 2025 payments were for
- Food and Beverage$313.38 · 11 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 61 Internal Medicine, Hematology providers in Duarte · All Internal Medicine, Hematology providers in California