Sarah Stack, MD
NPI 1437473097 · Pediatric Cardiology Physician · Walnut Creek, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sarah Stack, MD is a Pediatric Cardiology Physician provider in Walnut Creek, CA (NPI 1437473097).
Provider details
- NPI number
- 1437473097
- Entity type
- Individual
- Primary specialty
- Pediatric Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- MD60652463 (WA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
16 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
- 2010-03-25
- Last updated
- 2021-04-06
- Certified
- 2021-04-06
Frequently asked questions
- What is Sarah Stack's NPI number?
- Sarah Stack's National Provider Identifier (NPI) is 1437473097, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sarah Stack's specialty?
- Sarah Stack is listed in the NPPES registry with a primary specialty of Pediatric Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Sarah Stack located?
- Sarah Stack's practice location on file with NPPES is 106 La Casa Via Ste 220, Walnut Creek, CA 94598-3012.
- What is Sarah Stack's phone number?
- The practice phone number listed in the NPPES registry for Sarah Stack is (650) 497-8000.
- Does Sarah Stack accept Medicare?
- Sarah Stack is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sarah Stack's NPI active?
- Yes — Sarah Stack's NPI (1437473097) is active in the NPPES registry as of the last update on 2021-04-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.