Nicholas Mascarenhas, MD
NPI 1285111450 · Psychiatry Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nicholas Mascarenhas, MD is a Psychiatry Physician provider in Los Angeles, CA (NPI 1285111450).
Provider details
- NPI number
- 1285111450
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 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
19 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 Low Level of Medical Decision Making99283 | 19 | $79 |
Typical Medicare-allowed amounts for these services range $79–$79 (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
- 2018-07-20
- Last updated
- 2021-09-07
- Certified
- 2021-09-07
Frequently asked questions
- What is Nicholas Mascarenhas's NPI number?
- Nicholas Mascarenhas's National Provider Identifier (NPI) is 1285111450, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Mascarenhas's specialty?
- Nicholas Mascarenhas is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Nicholas Mascarenhas located?
- Nicholas Mascarenhas's practice location on file with NPPES is 2010 Zonal Ave # 1p10, Los Angeles, CA 90033-1026.
- What is Nicholas Mascarenhas's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Mascarenhas is (323) 409-5555.
- Does Nicholas Mascarenhas accept Medicare?
- Nicholas Mascarenhas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nicholas Mascarenhas's NPI active?
- Yes — Nicholas Mascarenhas's NPI (1285111450) is active in the NPPES registry as of the last update on 2021-09-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.