Matthew Kornswiet
NPI 1336534338 · Pediatrics Physician · Laguna Hills, CA
Matthew Kornswiet is a Pediatrics Physician provider in Laguna Hills, CA (NPI 1336534338).
Provider details
- NPI number
- 1336534338
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A17197 (CA)
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 tenure33% of score
11 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$156 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-04-06
- Last updated
- 2019-06-19
Frequently asked questions
- What is Matthew Kornswiet's NPI number?
- Matthew Kornswiet's National Provider Identifier (NPI) is 1336534338, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Kornswiet's specialty?
- Matthew Kornswiet is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Kornswiet located?
- Matthew Kornswiet's practice location on file with NPPES is 23521 Paseo De Valencia Ste 200, Laguna Hills, CA 92653-3101.
- What is Matthew Kornswiet's phone number?
- The practice phone number listed in the NPPES registry for Matthew Kornswiet is (949) 951-5437.
- Is Matthew Kornswiet's NPI active?
- Yes — Matthew Kornswiet's NPI (1336534338) is active in the NPPES registry as of the last update on 2019-06-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.