Mitchell Katz, MD
NPI 1366530107 · Pediatric Gastroenterology Physician · Orange, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mitchell Katz, MD is a Pediatric Gastroenterology Physician provider in Orange, CA (NPI 1366530107).
Provider details
- NPI number
- 1366530107
- Entity type
- Individual
- Primary specialty
- Pediatric Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G46842 (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
19 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
- 2006-10-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Mitchell Katz's NPI number?
- Mitchell Katz's National Provider Identifier (NPI) is 1366530107, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mitchell Katz's specialty?
- Mitchell Katz is listed in the NPPES registry with a primary specialty of Pediatric Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Mitchell Katz located?
- Mitchell Katz's practice location on file with NPPES is 455 S Main St, Orange, CA 92868-3835.
- What is Mitchell Katz's phone number?
- The practice phone number listed in the NPPES registry for Mitchell Katz is (714) 289-4099.
- Does Mitchell Katz accept Medicare?
- Mitchell Katz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mitchell Katz's NPI active?
- Yes — Mitchell Katz's NPI (1366530107) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.