Matthew Zahn, MD
NPI 1871577833 · Pediatric Infectious Diseases Physician · Santa Ana, CA
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Matthew Zahn, MD is a Pediatric Infectious Diseases Physician provider in Santa Ana, CA (NPI 1871577833).
Provider details
- NPI number
- 1871577833
- Entity type
- Individual
- Primary specialty
- Pediatric Infectious Diseases PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C55094 (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
20 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
- 2005-12-02
- Last updated
- 2013-04-09
Frequently asked questions
- What is Matthew Zahn's NPI number?
- Matthew Zahn's National Provider Identifier (NPI) is 1871577833, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Matthew Zahn's specialty?
- Matthew Zahn is listed in the NPPES registry with a primary specialty of Pediatric Infectious Diseases Physician (Allopathic & Osteopathic Physicians).
- Where is Matthew Zahn located?
- Matthew Zahn's practice location on file with NPPES is 1719 W 17th St, Santa Ana, CA 92706-2316.
- What is Matthew Zahn's phone number?
- The practice phone number listed in the NPPES registry for Matthew Zahn is (714) 834-8180.
- Does Matthew Zahn accept Medicare?
- Matthew Zahn is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Matthew Zahn's NPI active?
- Yes — Matthew Zahn's NPI (1871577833) is active in the NPPES registry as of the last update on 2013-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.