Mallory Castillo, MD
NPI 1770110132 · Student in an Organized Health Care Education/Training Program · Brooklyn, NY
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mallory Castillo, MD is a Student in an Organized Health Care Education/Training Program provider in Brooklyn, NY (NPI 1770110132).
Provider details
- NPI number
- 1770110132
- Entity type
- Individual
- Primary specialty
- Student in an Organized Health Care Education/Training ProgramStudent, Health Care
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
6 yrs in NPPES registry
- Profile completeness28% of score
83% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
128 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 53 | $136 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 47 | $196 |
| Critical Care, First 30-74 Minutes99291 | 15 | $238 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 13 | $80 |
Typical Medicare-allowed amounts for these services range $80–$238 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-03-25
- Last updated
- 2020-03-25
- Certified
- 2020-03-25
Frequently asked questions
- What is Mallory Castillo's NPI number?
- Mallory Castillo's National Provider Identifier (NPI) is 1770110132, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mallory Castillo's specialty?
- Mallory Castillo is listed in the NPPES registry with a primary specialty of Student in an Organized Health Care Education/Training Program (Student, Health Care).
- Where is Mallory Castillo located?
- Mallory Castillo's practice location on file with NPPES is 2601 Ocean Pkwy Rm 1n28, Brooklyn, NY 11235-7745.
- What is Mallory Castillo's phone number?
- The practice phone number listed in the NPPES registry for Mallory Castillo is (718) 616-4385.
- Does Mallory Castillo accept Medicare?
- Mallory Castillo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mallory Castillo's NPI active?
- Yes — Mallory Castillo's NPI (1770110132) is active in the NPPES registry as of the last update on 2020-03-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.