NPPES file of Aug 9, 2026

Kassandra Marie Mason, LMFT

Marriage & Family Therapist · San Diego, CA

Kassandra Marie Mason, LMFT is a marriage & family therapist with a practice address in San Diego, California, and NPI 1033632690, issued on Jul 25, 2017. Check the license (California LMFT100059, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033632690
Name
Kassandra Marie Mason
Credential
LMFT
Primary taxonomy
Marriage & Family Therapist 106H00000X
License number
LMFT100059 CA
Self-reported in NPPES; status is on the state search
Practice location
5353 Mission Center RD Ste 224, San Diego, CA 92108
Phone
(619) 688-5855
Enumerated
Jul 25, 2017
Record last updated
Jul 21, 2022
Fax
(619) 291-3310
Medicare enrollment
Enrolled (PECOS I20240210000409); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5353 Mission Center RD Ste 224

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Alma Carpio, PSYDPsychologist1245287267
  2. Ibolya Kantor, PH.D.Psychologist1942333182
  3. Naomi Lake, SOCIAL WORKERClinical Social Worker1215084116
  4. David Lindley, RNPsychiatric/Mental Health Nurse Practitioner1902275068
  5. Natalia Swarovski, M.D.,PH.D.Psychiatry Physician1861433252

Verify Kassandra Marie Mason in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license LMFT100059
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Southern Indian Health CouncilCampo, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

2,738 marriage & family therapist records list a practice address in San Diego

They are 2,738 of the 52,937 NPPES records with a practice address in San Diego, and 59,889 marriage & family therapist records in California.

Other marriage & family therapist records in California

  1. Lili Aames, LMFTSanta Fe Springs, CA1689836165
  2. Lynn Aamot, LMFTEl Dorado Hills, CA1508255027
  3. Nathan Aanderud, LMFTTorrance, CA1689036907
  4. Alex AaronSherman Oaks, CA1578442620
  5. Bianca Aaron, LMFT, APCCSan Francisco, CA1316459605
  6. Kelley Aaron, MFTLos Angeles, CA1699068866
  7. Ruth Aaron, MS, JD, MFTClaremont, CA1316029697
  8. Terry Aaron, MFTBurbank, CA1386801173
  9. Azadeh Aarons, LMFTThousand Oaks, CA1679343974
  10. Bianca Aarons, MA,LMFTSan Francisco, CA1699286732

Common questions

What is Kassandra Marie Mason, LMFT's NPI number?

Kassandra Marie Mason, LMFT's National Provider Identifier (NPI) is 1033632690, issued on Jul 25, 2017. An NPI identifies a provider in billing; it is not a license.

Where is Kassandra Marie Mason, LMFT located?

The NPPES record lists a practice address at 5353 Mission Center RD Ste 224, San Diego, CA, 92108. Phone: (619) 688-5855. Providers update this record themselves, so call before visiting.

How can I verify Kassandra Marie Mason, LMFT's license?

NPPES lists California license number LMFT100059, 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. Medicare files from data.cms.gov. 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.