Nelson Guevara Madrilejo, MD
NPI 1023110103ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Bakersfield, CA
Internal Medicine, Endocrinology, Diabetes & Metabolism (MD) with Mountain Communities Healthcare District and 1 other group, practicing in Bakersfield, California. Their prescriptions cost Medicare Part D more than their services did: $3,029,102 for 3,834 claims, against $228,159 paid for services in 2024. Abbvie Inc. was the largest of 28 companies reporting payments in 2025, $2,022 in all, mostly food and beverage. Lists Adventist Health Bakersfield and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1023110103 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Sep 1, 2006 |
| Last updated in NPPES | Apr 18, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | A47812 | 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 - Internal Medicine (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 725 |
|---|---|
| Services billed | 5,008 across 66 procedure codes |
| Paid by Medicare | $228,159 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,834 · 7,429 30-day fills |
|---|---|
| Patients | 332 |
| Total drug cost | $3,029,102 |
| Generic share | 43% of claims |
Education and affiliations
| Graduation year | 1986 |
|---|---|
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- Mountain Communities Healthcare DistrictWeaverville, CA · 29 clinicians
- Centennial Medical Group IncBakersfield, CA · 4 clinicians
Hospital affiliations
- Adventist Health BakersfieldBakersfield, CA
- Bakersfield Memorial HospitalBakersfield, CA
- Trinity HospitalWeaverville, CA
Other facilities
- Purpose Driven Home Health, LLCHome health agency · Bakersfield, CA
Industry payments (Open Payments)
- 2025$2,022 · 96 payments from 28 companies
- 2024$2,336 · 102 payments from 26 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $176.92 | 9 |
| Radius Health, Inc. | $160.91 | 5 |
| Lilly USA, LLC | $155.40 | 10 |
| Corcept Therapeutics | $152.67 | 6 |
| Medtronic, Inc. | $152.18 | 8 |
What the 2025 payments were for
- Food and Beverage$2,022 · 96 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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