Justin Defendis Mertens
Certified Registered Nurse Anesthetist · Fresno, CA
Justin Defendis Mertens is a certified registered nurse anesthetist with a practice address in Fresno, California, and NPI 1073374146, issued on Jan 17, 2024. Check the license (California 95002820, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Justin Defendis Mertens
- Primary taxonomy
- Certified Registered Nurse Anesthetist 367500000X
- License number
- 95002820 CA
Self-reported in NPPES; status is on the state search - Practice location
- 8840 N Fuller Ave, Fresno, CA 93720
- Phone
- (559) 367-4171
- Enumerated
- Jan 17, 2024
- Record last updated
- Mar 17, 2026
- Medicare enrollment
- Enrolled (PECOS I20260311003100); accepts Medicare assignment
- Medical or professional school
- National Medical University, 2025
- Entity
- Type 1 · individual
8 nearest certified registered nurse anesthetist records → All 2,943 in California → Look up another NPI →
Verify Justin Defendis Mertens in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 95002820Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $121.83
1 payment: food and beverage; the largest payer was Pacira Pharmaceuticals Incorporated. The 24,076 providers of this specialty with any payment received $135.08 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Anesthesia Consultants OF FresnoFresno, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Justin Defendis Mertens among 2,943 certified registered nurse anesthetist records in California
Justin Defendis Mertens is one of 2,943 certified registered nurse anesthetist records with a practice address in California. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 93% of them.
- NPI issued2024 · 93% of these records are older, 3% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2025 · median 2016 among the 2,089 with a school on file
- Record last updated2026 · 51% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 367500000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Certified Registered Nurse Anesthetist providers in California
There are 2,943 certified registered nurse anesthetist records in California.
All 2,943 in California → Every provider in Fresno → Certified Registered Nurse Anesthetist nationwide →
The 8 certified registered nurse anesthetist records with the nearest ZIP codes
- Marshall Allen, CRNAFresno, CA 937201871527689
- Terry Bavin, CRNAFresno, CA 937201437223088
- Thomas Broach, CRNAFresno, CA 937201902870058
- Russell Cimo, CRNAFresno, CA 937201316017932
- Nancy Dickerson, CRNAFresno, CA 937201659301224
- Pedro Guzman, CRNAFresno, CA 937201255637369
- Garrett Kitt, CRNAFresno, CA 937201891204541
- Joseph Mackley, CRNAFresno, CA 937201679503247
Common questions
What is Justin Defendis Mertens's NPI number?
Justin Defendis Mertens's National Provider Identifier (NPI) is 1073374146, issued on Jan 17, 2024. An NPI identifies a provider in billing; it is not a license.
Where is Justin Defendis Mertens located?
The NPPES record lists a practice address at 8840 N Fuller Ave, Fresno, CA, 93720. Phone: (559) 367-4171. Providers update this record themselves, so call before visiting.
How can I verify Justin Defendis Mertens's license?
NPPES lists California license number 95002820, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
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.