Caroline Song, MD
NPI 1619055464 · Pediatrics Physician · Hayward, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Caroline Song, MD is a Pediatrics Physician provider in Hayward, CA (NPI 1619055464).
Provider details
- NPI number
- 1619055464
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A70817 (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
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
Registry dates
- Enumerated
- 2006-11-01
- Last updated
- 2021-12-06
Frequently asked questions
- What is Caroline Song's NPI number?
- Caroline Song's National Provider Identifier (NPI) is 1619055464, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Caroline Song's specialty?
- Caroline Song is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Caroline Song located?
- Caroline Song's practice location on file with NPPES is 27400 Hesperian Blvd, Hayward, CA 94545-4235.
- What is Caroline Song's phone number?
- The practice phone number listed in the NPPES registry for Caroline Song is (510) 784-4000.
- Does Caroline Song accept Medicare?
- Caroline Song is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Caroline Song's NPI active?
- Yes — Caroline Song's NPI (1619055464) is active in the NPPES registry as of the last update on 2021-12-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.