Quick answers
- Which hospitals does Mariela Macias work at?
- Medicare's official clinician data lists Mariela Macias at 3 hospitals: Grossmont Hospital, Sharp Chula Vista Medical Center and Sharp Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mariela Macias see patients?
- Medicare's clinician data lists 1 practice location in Chula Vista, CA. Call before your visit to confirm the address.
- What is Mariela Macias's specialty?
- Medicare lists Hematology/Oncology as the primary specialty, and also Internal Medicine.
- Does Mariela Macias accept Medicare assignment?
- Yes. Medicare's clinician data says Mariela Macias accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does Mariela Macias offer telehealth?
- Medicare's clinician data says Mariela Macias offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Mariela Macias?
- (858) 499-2600, as listed in official Medicare / NPI Registry data.
- What is Mariela Macias's NPI number?
- 1629235072. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mariela Macias works
Medicare's Facility Affiliation Data lists Mariela Macias at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Grossmont HospitalLa Mesa, CA · Acute Care Hospital · CCN 050026
- Sharp Chula Vista Medical CenterChula Vista, CA · Acute Care Hospital · CCN 050222
- Sharp Memorial HospitalSan Diego, CA · Acute Care Hospital · CCN 050100
Practice locations
Addresses where Mariela Macias is enrolled with Medicare (CMS data updated 2026-10-02).
- 1400 E Palomar StChula Vista, CA 91913 (858) 499‑2600
Group practices
Medicare enrollment lists Mariela Macias as a member of this group (CMS data updated 2026-10-02).
- Sharp Rees-Stealy Medical Group Inc884 clinicians in the group
Specialties
- Hematology/Oncologyprimary
- Internal Medicinealso
Other hematologist-oncologists in Chula Vista
Clinicians with the same Medicare primary specialty in Chula Vista, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Southern California Keck School Of Medicine |
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1629235072 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians