Andrew Brennan, MD
NPI 1770043168 · Pediatric Cardiology Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andrew Brennan, MD is a Pediatric Cardiology Physician provider in Palo Alto, CA (NPI 1770043168).
Provider details
- NPI number
- 1770043168
- Entity type
- Individual
- Primary specialty
- Pediatric Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A180245 (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
7 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
- 2019-03-21
- Last updated
- 2026-01-16
- Certified
- 2026-01-16
Frequently asked questions
- What is Andrew Brennan's NPI number?
- Andrew Brennan's National Provider Identifier (NPI) is 1770043168, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andrew Brennan's specialty?
- Andrew Brennan is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Andrew Brennan located?
- Andrew Brennan's practice location on file with NPPES is 725 Welch Rd, Palo Alto, CA 94304-1601.
- What is Andrew Brennan's phone number?
- The practice phone number listed in the NPPES registry for Andrew Brennan is (650) 497-8000.
- Does Andrew Brennan accept Medicare?
- Andrew Brennan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andrew Brennan's NPI active?
- Yes — Andrew Brennan's NPI (1770043168) is active in the NPPES registry as of the last update on 2026-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.