npidata.org
Products
Provider RadarWatch an area and specialty — weekly alerts on new cliniciansPractice RadarWeekly alerts when new organisations register nearbySpecialtiesEvery NUCC taxonomy, with counts by state and cityStatesProvider counts and breakdowns for all 50 statesPhysician listsMDs and DOs with addresses and phone numbersNP listsNurse practitioners, the fastest-growing groupAPIJSON, delta feed, free tier
Use cases
Healthcare sales prospectingPhysician recruiting and locum staffingMedical device sales territory planningCredentialing and provider verificationHealthcare marketing lists and audience buildingPharmaceutical sales and prescriber targeting
Account
Start freeThree radars and an export a month Sign in Pricing
Explore
Data Labs API
About
About usTermsPrivacyContact us

Search › California › Marriage & Family Therapist

Matthew Van Onselen

NPI 1376476663 · on the registry since 2026

Practice

Address
12401 Wilshire Blvd Ste 303
Los Angeles, CA 90025
Phone
(323) 366-3433
Organisation at this address
John H. Peloian
Avantis Neuroscience Inc
William F. Stubbeman, M.D., Apc
Healing Connections By Karen Fried, Inc.
Weiss & Associates, A Psychological Corporation
Inferred from a shared address, not stated in the registry.
Clinicians at this address
39

Registry record

Primary taxonomy
Marriage & Family Therapist
106H00000X
Licence states on file
CA
From the registry's licence fields, which are often incomplete.
Sex
Male
Record last updated
2026-06-05

Source: CMS National Plan and Provider Enumeration System. Registration is not the same as practising, and the registry records no retirement — some people listed here no longer practise. More in California