Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Dr. Randall Craig Rheinheimer, PH.D., MFT

Marriage & Family Therapist in Tustin, CA · enumerated 2009.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1811135783

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Registry record

Entity type Individual (Type 1)

Name Dr. Randall Craig Rheinheimer

Credential PH.D., MFT

Sex Male

Practice address Tustin, CA, 92780

Phone (714) 573-0000

Enumeration date Jan 29, 2009

Last updated in NPPES Jan 29, 2009

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

106H00000X Marriage & Family Therapist Behavioral Health & Social Service Providers · License MFC 22685 (CA) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

Where does Randall Rheinheimer practice?

The practice location on file with NPPES is in Tustin, CA. Providers can have multiple locations; NPPES lists the primary practice address.

What is the NPI number for Randall Rheinheimer?

The National Provider Identifier (NPI) for Randall Rheinheimer is 1811135783, a Type 1 (individual) record in the CMS NPPES registry.

Other providers at this practice address

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Charles Coull Marriage & Family Therapist · Tustin, CA NPI 1376754549

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-01-29.