Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Matthew Walt Gerenz, MD

Individual provider Psychiatry Physician · NPI 1992385785

Matthew Walt Gerenz, MD is a Psychiatry in Orange, California. Qualified in 2021, 5 years ago. Practices with Mellow Medical Inc a Professional Corporation, a 30-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
5
Licensed in
CA
In the registry since
2021
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3800 W Chapman Ave
Orange, CA 92868-1638
Phone: (701) 400-2926
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence A183126 (CA)

Record details

NPI number1992385785
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 14, 2021
Last updated in NPPESApril 25, 2024
Certification dateApril 25, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 2021 (5 years in practice)
Group practice Mellow Medical Inc A Professional Corporation — 30 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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