Mark Fieldson, M.F.T.
Marriage & Family Therapist · Los Alamitos, CA
Mark Fieldson, M.F.T. is a marriage & family therapist with a practice address in Los Alamitos, California, and NPI 1225196454, issued on Dec 4, 2006. Check the license (California MFC25467, 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
- Mark Fieldson
- Credential
- M.F.T.
- Primary taxonomy
- Marriage & Family Therapist 106H00000X
- License number
- MFC25467 CA
Self-reported in NPPES; status is on the state search - Practice location
- 4132 Katella Ave, Los Alamitos, CA 90720
- Phone
- (562) 754-3005
- Enumerated
- Dec 4, 2006
- Record last updated
- Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (562) 598-5997
- Entity
- Type 1 · individual
Also registered at 4132 Katella Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Wendy Block, L.C.S,W.Clinical Social Worker1033312822
- Alison Garcia, LMFTMarriage & Family Therapist1902135890
- Elizabeth Knego, MSWMental Health Counselor1255318358
- Yoonah LeePhysician Assistant1538417415
- Deborah Mauldin, LCSWMental Health Counselor1962459297
- Rebecca Schrock, LMFTMarriage & Family Therapist1952740664
Verify Mark Fieldson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license MFC25467Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
105 marriage & family therapist records list a practice address in Los Alamitos
They are 105 of the 1,035 NPPES records with a practice address in Los Alamitos, 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 105 in Los Alamitos → All 59,889 in California → Every provider in Los Alamitos →
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 Mark Fieldson, M.F.T.'s NPI number?
Mark Fieldson, M.F.T.'s National Provider Identifier (NPI) is 1225196454, issued on Dec 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark Fieldson, M.F.T. located?
The NPPES record lists a practice address at 4132 Katella Ave, Los Alamitos, CA, 90720. Phone: (562) 754-3005. Providers update this record themselves, so call before visiting.
How can I verify Mark Fieldson, M.F.T.'s license?
NPPES lists California license number MFC25467, 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.