Diego Alcaraz Alvarez, M.D.
NPI 1376992446ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Omaha, NE
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) with Geisinger Clinic and 1 other group, practicing in Omaha, Nebraska. Their prescriptions cost Medicare Part D more than their services did: $2,334,282 for 4,723 claims, against $44,048 paid for services in 2024. Boehringer Ingelheim Pharmaceuticals, Inc. was the largest of 6 companies reporting payments in 2025, $417.07 in all, mostly food and beverage. Lists Geisinger Wyoming Valley Medical Center and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1376992446 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 8, 2016 |
| Last updated in NPPES | Aug 10, 2026 |
| Certified by provider | Aug 10, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | MD473140 | PA |
| Internal Medicine | 207R00000X | 8400 | NE |
| Student in an Organized Health Care Education/Training Program | 390200000X | 7248941 | ZZ |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (NE); Practitioner - Endocrinology (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 450 |
|---|---|
| Services billed | 936 across 14 procedure codes |
| Paid by Medicare | $44,048 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,723 · 9,717 30-day fills |
|---|---|
| Patients | 816 |
| Total drug cost | $2,334,282 |
| Generic share | 39% of claims |
Education and affiliations
| Graduation year | 2011 |
|---|---|
| Medicare specialty | Endocrinology |
| Telehealth | Offers telehealth |
Medical groups
- Geisinger ClinicDanville, PA · 3,467 clinicians
- Unmc PhysiciansBellevue, NE · 1,518 clinicians
Hospital affiliations
- Geisinger Wyoming Valley Medical CenterWilkes Barre, PA
- Geisinger-Bloomsburg HospitalBloomsburg, PA
- Geisinger-Community Medical CenterScranton, PA
- The Nebraska Medical CenterOmaha, NE
- Wayne Memorial HospitalHonesdale, PA
Industry payments (Open Payments)
- 2025$417.07 · 26 payments from 6 companies
- 2024$299.03 · 25 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boehringer Ingelheim Pharmaceuticals, Inc. | $118.31 | 12 |
| Sequel Med Tech, LLC | $85.04 | 4 |
| Novo Nordisk Inc | $74.31 | 3 |
| Tandem Diabetes Care, Inc. | $72.22 | 3 |
| Lilly USA, LLC | $52.53 | 3 |
What the 2025 payments were for
- Food and Beverage$417.07 · 26 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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