Zachary Kastenberg, M.D.
NPI 1518191915 · Pediatric Surgery Physician · Stanford, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Zachary Kastenberg, M.D. is a Pediatric Surgery Physician provider in Stanford, CA (NPI 1518191915).
Provider details
- NPI number
- 1518191915
- Entity type
- Individual
- Primary specialty
- Pediatric Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2009-05-13
- Last updated
- 2021-10-29
- Certified
- 2021-10-29
Frequently asked questions
- What is Zachary Kastenberg's NPI number?
- Zachary Kastenberg's National Provider Identifier (NPI) is 1518191915, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Zachary Kastenberg's specialty?
- Zachary Kastenberg is listed in the NPPES registry with a primary specialty of Pediatric Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Zachary Kastenberg located?
- Zachary Kastenberg's practice location on file with NPPES is 300 Pasteur Dr., Stanford, CA 94305-5641.
- What is Zachary Kastenberg's phone number?
- The practice phone number listed in the NPPES registry for Zachary Kastenberg is (650) 736-1355.
- Does Zachary Kastenberg accept Medicare?
- Zachary Kastenberg is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Zachary Kastenberg's NPI active?
- Yes — Zachary Kastenberg's NPI (1518191915) is active in the NPPES registry as of the last update on 2021-10-29.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.