Mazen Issam Abbas, D.O., M.P.H.
Pediatric Gastroenterology Physician · Madera, CA
Mazen Issam Abbas, D.O., M.P.H. is a pediatric gastroenterology physician with a practice address in Madera, California, and NPI 1790775278, issued on Oct 25, 2005. Check the license (California 20A14673, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Mazen Issam Abbas
- Credential
- D.O., M.P.H.
- Primary taxonomy
- Pediatric Gastroenterology Physician 2080P0206X
- License number
- 20A14673 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9300 Valley Childrens PL # SE09, Madera, CA 93636
- Phone
- (559) 353-5745
- Enumerated
- Oct 25, 2005
- Record last updated
- Oct 9, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (559) 353-6093
- Medicaid ID
- 1790775278 CA
- Entity
- Type 1 · individual
8 nearest pediatric gastroenterology physician records → All 264 in California → Look up another NPI →
Also registered at 9300 Valley Childrens PL # SE09
A shared address usually means a shared clinic or building; it does not show who employs whom.
- John-Paul Berauer, MDPediatric Gastroenterology Physician1154640860
- Alexandra Eidelwein, M.D.Pediatric Gastroenterology Physician1649265968
- Philip McDonald, MDPediatric Gastroenterology Physician1871698985
Verify Mazen Issam Abbas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A14673Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 85.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Mazen Issam Abbas among 264 pediatric gastroenterology physician records in California
Mazen Issam Abbas, D.O., M.P.H. is one of 264 pediatric gastroenterology physician records with a practice address in California. 62% 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, 97% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileNo · 30% of these records are
- Record last updated2020 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0206X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Gastroenterology Physician providers in California
There are 264 pediatric gastroenterology physician records in California.
All 264 in California → Every provider in Madera → Pediatric Gastroenterology Physician nationwide →
The 8 pediatric gastroenterology physician records with the nearest ZIP codes
- Neha Ahuja, M.D.Madera, CA 936361750728358
- Karla Au Yeung, M.D.Madera, CA 936361598794596
- Ayesha BaigMadera, CA 936361972919801
- John-Paul Berauer, MDMadera, CA 936361154640860
- Uwe Blecker, MDMadera, CA 936361225013527
- Alexandra Eidelwein, M.D.Madera, CA 936361649265968
- Jamie Loveall, D.OMadera, CA 936361912351420
- Philip McDonald, MDMadera, CA 936361871698985
Common questions
What is Mazen Issam Abbas, D.O., M.P.H.'s NPI number?
Mazen Issam Abbas, D.O., M.P.H.'s National Provider Identifier (NPI) is 1790775278, issued on Oct 25, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Mazen Issam Abbas, D.O., M.P.H. located?
The NPPES record lists a practice address at 9300 Valley Childrens PL # SE09, Madera, CA, 93636. Phone: (559) 353-5745. Providers update this record themselves, so call before visiting.
How can I verify Mazen Issam Abbas, D.O., M.P.H.'s license?
NPPES lists California license number 20A14673, 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.
What is Mazen Issam Abbas, D.O., M.P.H.'s MIPS final score?
The 2023 MIPS final score is 85.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.