Alyssa Rosario, MD
NPI 1366947970 · Pediatrics Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alyssa Rosario, MD is a Pediatrics Physician provider in Los Angeles, CA (NPI 1366947970).
Provider details
- NPI number
- 1366947970
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A165226 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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.
Practice location
Mailing address
Additional practice locations (1)
- 4650 W Sunset Blvd # 68Los Angeles, CA 90027-6062Phone: (323) 361-2122
Registry dates
- Enumerated
- 2018-03-26
- Last updated
- 2022-06-29
- Certified
- 2022-06-29
Frequently asked questions
- What is Alyssa Rosario's NPI number?
- Alyssa Rosario's National Provider Identifier (NPI) is 1366947970, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alyssa Rosario's specialty?
- Alyssa Rosario is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Alyssa Rosario located?
- Alyssa Rosario's practice location on file with NPPES is 2020 Zonal Ave # Ird133, Los Angeles, CA 90089-0121.
- What is Alyssa Rosario's phone number?
- The practice phone number listed in the NPPES registry for Alyssa Rosario is (818) 427-4917.
- Does Alyssa Rosario accept Medicare?
- Alyssa Rosario is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alyssa Rosario's NPI active?
- Yes — Alyssa Rosario's NPI (1366947970) is active in the NPPES registry as of the last update on 2022-06-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.