Larry Jose Diaz, MD
NPI 1952301038ActiveIndividual· Internal Medicine, Cardiovascular Disease· Wyoming, MI
Internal Medicine, Cardiovascular Disease (MD) with Ascension Medical Group Promed and 1 other group, practicing in Wyoming, Michigan. Their prescriptions cost Medicare Part D more than their services did: $625,888 for 3,814 claims, against $67,137 paid for services in 2024. Stryker Corporation was the largest of 20 companies reporting payments in 2025, $1,876 in all, mostly food and beverage. Lists Ascension Borgess Lee Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1952301038 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Jul 29, 2005 |
| Last updated in NPPES | Dec 8, 2017 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Cardiovascular Disease Primary | 207RC0000X | 4301097454 | MI |
| Specialist | 174400000X | 203831 | MA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | ME93966 | FL |
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 - Cardiovascular Disease (Cardiology) (MI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 508 |
|---|---|
| Services billed | 1,253 across 43 procedure codes |
| Paid by Medicare | $67,137 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,814 · 9,479 30-day fills |
|---|---|
| Patients | 625 |
| Total drug cost | $625,888 |
| Generic share | 85% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Cardiovascular Disease (Cardiology) |
Medical groups
- Ascension Medical Group PromedKalamazoo, MI · 262 clinicians
- Ascension Borgess HospitalKalamazoo, MI · 37 clinicians
Hospital affiliations
- Ascension Borgess Lee HospitalDowagiac, MI
- Borgess Medical CenterKalamazoo, MI
- Hillsdale HospitalHillsdale, MI
- Insight Hospital and Medical Center ColdwaterColdwater, MI
- Three Rivers HealthThree Rivers, MI
Other facilities
- Beacon PlainwellLong-term care hospital · Plainwell, MI
Industry payments (Open Payments)
- 2025$1,876 · 52 payments from 20 companies
- 2024$5,534 · 46 payments from 21 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $418.66 | 4 |
| Medtronic, Inc. | $199.61 | 2 |
| Penumbra, Inc. | $186.32 | 2 |
| Novartis Pharmaceuticals Corporation | $165.40 | 15 |
| Shockwave Medical, Inc | $147.04 | 4 |
What the 2025 payments were for
- Food and Beverage$1,876 · 52 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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