Matthew M. Zahn, MD
Pediatric Infectious Diseases Physician · Santa Ana, CA
Matthew M. Zahn, MD is a pediatric infectious diseases physician with a practice address in Santa Ana, California, and NPI 1871577833, issued on Dec 2, 2005. Check the license (California C55094, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Matthew M. Zahn
- Credential
- MD
- Primary taxonomy
- Pediatric Infectious Diseases Physician 2080P0208X
- License number
- C55094 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1719 W 17TH St, Santa Ana, CA 92706
- Phone
- (714) 834-8180
- Enumerated
- Dec 2, 2005
- Record last updated
- Apr 9, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (714) 834-8196
- Medicaid IDs
- 200305040 IN
64087281 KY - Medicare enrollment
- Enrolled (PECOS I20151223000775); accepts Medicare assignment
- Medical or professional school
- Saint Louis University School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest pediatric infectious diseases physician records → All 161 in California → Look up another NPI →
Also registered at 1719 W 17TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maureene Cruz, RN, PHNCommunity Health Registered Nurse1134310733
Verify Matthew M. Zahn in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C55094Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Childrens Hospital OF Orange CountyOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew M. Zahn among 161 pediatric infectious diseases physician records in California
Matthew M. Zahn, MD is one of 161 pediatric infectious diseases physician records with a practice address in California. 48% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 98% newer
- In a Medicare fileYes · 48% of these records are
- In the CMS Doctors and Clinicians fileYes · 30% of these records are
- Graduated1996 · median 2002 among the 49 with a school on file
- Record last updated2013 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0208X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Infectious Diseases Physician providers in California
There are 161 pediatric infectious diseases physician records in California.
All 161 in California → Every provider in Santa Ana → Pediatric Infectious Diseases Physician nationwide →
The 8 pediatric infectious diseases physician records with the nearest ZIP codes
- Michele Cheung, MDSanta Ana, CA 927061467563551
- Roopa Viraraghavan, M.D.Santa Ana, CA 927061760553903
- Nancy Dodd-Stackle, MDAnaheim, CA 928071083781983
- Ayesha Ahmed, MDMoreno Valley, CA 925551770003519
- Felice Adler-Shohet, M.D.Orange, CA 928681962513051
- Antonio Arrieta, M.D.Orange, CA 928681861599748
- Negar Ashouri, M.D.Orange, CA 928681275630154
- Emilie Chow, MDOrange, CA 928681295864866
Common questions
What is Matthew M. Zahn, MD's NPI number?
Matthew M. Zahn, MD's National Provider Identifier (NPI) is 1871577833, issued on Dec 2, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Matthew M. Zahn, MD located?
The NPPES record lists a practice address at 1719 W 17TH St, Santa Ana, CA, 92706. Phone: (714) 834-8180. Providers update this record themselves, so call before visiting.
How can I verify Matthew M. Zahn, MD's license?
NPPES lists California license number C55094, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.