Provider Profile

Matthew Grelling, M.A. M.F.T.

Unclaimed Profile

About Matthew Grelling

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Specialty

Mental Health Counselor (Primary)

Credentials & Licensing

CA licenseMFT 35675
NPI1831239037
NPI issued02/07/2007

License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.

Common questions

What does Matthew Grelling specialize in?

Matthew Grelling is a mental health counselor in Diamond Bar, CA. That is the designation recorded for this NPI in the federal registry.

NPI registry

Where is Matthew Grelling located?

Matthew Grelling is listed at 1111 Grand Ave Ste J, Diamond Bar, CA 91765. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

What is Matthew Grelling's phone number?

The number on file is (951) 505-0019. Guide.md cannot book appointments or pass on messages — please call the office directly.

NPI registry

What is the NPI for Matthew Grelling?

Matthew Grelling's National Provider Identifier is 1831239037. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

How much experience does Matthew Grelling have?

Matthew Grelling has 19+ years experience. Registered with an NPI since 2007. National Provider Identifiers only began in 2005, so a provider who qualified earlier may have practiced for longer than this.

NPI registry

Is Matthew Grelling's profile verified?

Not yet. This profile is built from public federal data and has not been confirmed by Matthew Grelling. If this is you, claiming it is free.

Guide.md

Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.