Mariela Macias, MD
NPI 1629235072 · Hematology & Oncology Physician · Chula Vista, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mariela Macias, MD is a Hematology & Oncology Physician provider in Chula Vista, CA (NPI 1629235072).
Provider details
- NPI number
- 1629235072
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A102365 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
437 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 175 | $191 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 136 | $136 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 69 | $134 |
| Collection of Blood Sample From Implanted Device36591 | 40 | $32 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 17 | $232 |
Typical Medicare-allowed amounts for these services range $32–$232 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 150 | 50 |
| Tamoxifen Citrate | 61 | 21 |
| Letrozole | 51 | 14 |
| Ondansetronbrand: Ondansetron Odt | 49 | 28 |
| Prednisone | 46 | 21 |
| Ruxolitinib Phosphatebrand: Jakafi | 44 | — |
| Hydroxyurea | 41 | 15 |
| Levothyroxine Sodium |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$187 across 7 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-05-21
- Last updated
- 2018-03-19
Frequently asked questions
- What is Mariela Macias's NPI number?
- Mariela Macias's National Provider Identifier (NPI) is 1629235072, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mariela Macias's specialty?
- Mariela Macias is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Mariela Macias located?
- Mariela Macias's practice location on file with NPPES is 1400 E Palomar St, Chula Vista, CA 91913-1800.
- What is Mariela Macias's phone number?
- The practice phone number listed in the NPPES registry for Mariela Macias is (858) 393-6622.
- Does Mariela Macias accept Medicare?
- Mariela Macias is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mariela Macias's NPI active?
- Yes — Mariela Macias's NPI (1629235072) is active in the NPPES registry as of the last update on 2018-03-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.