Gustavo A. Machicado, MD
NPI 1568434652ActiveIndividual· Internal Medicine, Gastroenterology· Northridge, CA
Internal Medicine, Gastroenterology (MD) in Northridge, California, trained at University of California, San Francisco School of Medicine (class of 1974). Their prescriptions cost Medicare Part D more than their services did: $276,864 for 1,418 claims, against $129,846 paid for services in 2024. Madrigal Pharmaceuticals was the largest of 7 companies reporting payments in 2025, $536.46 in all, mostly food and beverage.
Overview
| NPI | 1568434652 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Feb 3, 2006 |
| Last updated in NPPES | Apr 10, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Gastroenterology Primary | 207RG0100X | G308630 | CA |
| Internal Medicine | 207R00000X | G308630 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 604 |
|---|---|
| Services billed | 1,299 across 27 procedure codes |
| Paid by Medicare | $129,846 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,418 · 2,883 30-day fills |
|---|---|
| Patients | 372 |
| Total drug cost | $276,864 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of California, San Francisco School of Medicine |
|---|---|
| Graduation year | 1974 |
| Medicare specialty | Gastroenterology |
| Secondary specialties | Internal Medicine |
Medical group
- United Medical DoctorsMurrieta, CA · 173 clinicians
Hospital affiliation
- Northridge Hospital Medical CenterNorthridge, CA
Industry payments (Open Payments)
- 2025$536.46 · 21 payments from 7 companies
- 2024$408.50 · 17 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Madrigal Pharmaceuticals | $162.12 | 7 |
| Aimmune Therapeutics, Inc. | $128.55 | 5 |
| Abbvie Inc. | $83.02 | 3 |
| Capsovision, Inc. | $76.01 | 2 |
| Phathom Pharmaceuticals, Inc. | $32.79 | 2 |
What the 2025 payments were for
- Food and Beverage$536.46 · 21 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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