Margaret Riley-Hagan, M.D.
NPI 1548352388 · Pediatrics Physician · San Marcos, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Riley-Hagan, M.D. is a Pediatrics Physician provider in San Marcos, CA (NPI 1548352388).
Provider details
- NPI number
- 1548352388
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A49609 (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
- 2006-09-29
- Last updated
- 2021-11-29
Frequently asked questions
- What is Margaret Riley-Hagan's NPI number?
- Margaret Riley-Hagan's National Provider Identifier (NPI) is 1548352388, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Riley-Hagan's specialty?
- Margaret Riley-Hagan is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Margaret Riley-Hagan located?
- Margaret Riley-Hagan's practice location on file with NPPES is 400 Craven Rd, San Marcos, CA 92078-4201.
- What is Margaret Riley-Hagan's phone number?
- The practice phone number listed in the NPPES registry for Margaret Riley-Hagan is (760) 510-4169.
- Does Margaret Riley-Hagan accept Medicare?
- Margaret Riley-Hagan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Riley-Hagan's NPI active?
- Yes — Margaret Riley-Hagan's NPI (1548352388) is active in the NPPES registry as of the last update on 2021-11-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.