Kathleen Tzan, MD
NPI 1508390766 · Pediatrics Physician · Garden Grove, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Kathleen Tzan, MD is a Pediatrics Physician provider in Garden Grove, CA (NPI 1508390766).
Provider details
- NPI number
- 1508390766
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A158875 (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
9 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
- 2017-04-14
- Last updated
- 2021-12-08
- Certified
- 2020-07-22
Frequently asked questions
- What is Kathleen Tzan's NPI number?
- Kathleen Tzan's National Provider Identifier (NPI) is 1508390766, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathleen Tzan's specialty?
- Kathleen Tzan is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Kathleen Tzan located?
- Kathleen Tzan's practice location on file with NPPES is 12100 Euclid St, Garden Grove, CA 92840-3304.
- What is Kathleen Tzan's phone number?
- The practice phone number listed in the NPPES registry for Kathleen Tzan is (833) 574-2273.
- Does Kathleen Tzan accept Medicare?
- Kathleen Tzan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Kathleen Tzan's NPI active?
- Yes — Kathleen Tzan's NPI (1508390766) is active in the NPPES registry as of the last update on 2021-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.