Sandra Fonseca
Marriage & Family Therapist · Ontario, CA
Sandra Fonseca is a marriage & family therapist with a practice address in Ontario, California, and NPI 1639469737, issued on Apr 11, 2011. Check the license (California LMFT142854, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Sandra Fonseca
- Primary taxonomy
- Marriage & Family Therapist 106H00000X
- License number
- LMFT142854 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1011 N Begonia Ave Ste 1009, Ontario, CA 91762
- Phone
- (800) 683-2945
- Enumerated
- Apr 11, 2011
- Record last updated
- Dec 1, 2023
- Entity
- Type 1 · individual
Also registered at 1011 N Begonia Ave Ste 1009
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mylan Allen, LMFTMarriage & Family Therapist1942777354
- Antonia Allison, MFTIMarriage & Family Therapist1780003418
- Sirena Campagna, LMFTMarriage & Family Therapist1093199473
- Cassandra GhaznaviMental Health Counselor1225552441
- Ricardo ManciaMarriage & Family Therapist1518151919
- Melissa Matuszak, PH.D.Psychologist1396482055
Verify Sandra Fonseca in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license LMFT142854Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
169 marriage & family therapist records list a practice address in Ontario
They are 169 of the 5,375 NPPES records with a practice address in Ontario, and 59,889 marriage & family therapist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 169 in Ontario → All 59,889 in California → Every provider in Ontario →
Other marriage & family therapist records in California
- Lili Aames, LMFTSanta Fe Springs, CA1689836165
- Lynn Aamot, LMFTEl Dorado Hills, CA1508255027
- Nathan Aanderud, LMFTTorrance, CA1689036907
- Alex AaronSherman Oaks, CA1578442620
- Bianca Aaron, LMFT, APCCSan Francisco, CA1316459605
- Kelley Aaron, MFTLos Angeles, CA1699068866
- Ruth Aaron, MS, JD, MFTClaremont, CA1316029697
- Terry Aaron, MFTBurbank, CA1386801173
- Azadeh Aarons, LMFTThousand Oaks, CA1679343974
- Bianca Aarons, MA,LMFTSan Francisco, CA1699286732
Common questions
What is Sandra Fonseca's NPI number?
Sandra Fonseca's National Provider Identifier (NPI) is 1639469737, issued on Apr 11, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Sandra Fonseca located?
The NPPES record lists a practice address at 1011 N Begonia Ave Ste 1009, Ontario, CA, 91762. Phone: (800) 683-2945. Providers update this record themselves, so call before visiting.
How can I verify Sandra Fonseca's license?
NPPES lists California license number LMFT142854, 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. 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.