Mariela Noemi Macias, MD
NPI 1629235072ActiveIndividual· Internal Medicine, Hematology & Oncology· Chula Vista, CA
Internal Medicine, Hematology & Oncology (MD) in Chula Vista, California, trained at University of Southern California Keck School of Medicine (class of 2006). Their prescriptions cost Medicare Part D more than their services did: $6,351,300 for 1,624 claims, against $130,146 paid for services in 2024. Janssen Biotech, Inc. was the largest of 20 companies reporting payments in 2025, $1,237 in all, mostly food and beverage.
Overview
| NPI | 1629235072 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | May 21, 2008 |
| Last updated in NPPES | Mar 19, 2018 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | A102365 | CA |
| Internal Medicine | 207R00000X | A102365 | 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 - Hematology/Oncology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 172 |
|---|---|
| Services billed | 1,014 across 30 procedure codes |
| Paid by Medicare | $130,146 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,624 · 2,649 30-day fills |
|---|---|
| Patients | 268 |
| Total drug cost | $6,351,300 |
| Generic share | 72% of claims |
Education and affiliations
| Medical school | University of Southern California Keck School of Medicine |
|---|---|
| Graduation year | 2006 |
| Medicare specialty | Hematology/Oncology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Sharp Rees-Stealy Medical Group IncSan Diego, CA · 884 clinicians
Hospital affiliations
- Grossmont HospitalLa Mesa, CA
- Sharp Chula Vista Medical CenterChula Vista, CA
- Sharp Memorial HospitalSan Diego, CA
Industry payments (Open Payments)
- 2025$1,237 · 37 payments from 20 companies
- 2024$186.51 · 7 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Janssen Biotech, Inc. | $163.46 | 4 |
| Novartis Pharmaceuticals Corporation | $131.43 | 2 |
| Amgen Inc. | $124.85 | 1 |
| Merck Sharp & Dohme LLC | $93.06 | 3 |
| Astrazeneca Pharmaceuticals LP | $81.33 | 4 |
What the 2025 payments were for
- Food and Beverage$981.78 · 34 payments
- Education$155.96 · 2 payments
- Long term medical supply or device loan$99.70 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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