NPPES file of Aug 9, 2026

Mary Tuthill Ambler, LCSW

Clinical Social Worker · Oxnard, CA

Mary Tuthill Ambler, LCSW is a clinical social worker with a practice address in Oxnard, California, and NPI 1154548899, issued on Apr 20, 2007. Check the license (California LCSW16930, 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
1154548899
Name
Mary Tuthill Ambler
Credential
LCSW
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
LCSW16930 CA
Self-reported in NPPES; status is on the state search
Practice location
221 Ventura Blvd # 126, Oxnard, CA 93036
Phone
(805) 436-3444
Enumerated
Apr 20, 2007
Record last updated
Aug 6, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(805) 485-4160
Medicare enrollment
Enrolled (PECOS I20100312000314); 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 221 Ventura Blvd # 126

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

  1. Morgen MerickelBehavior Analyst1285211524
  2. Juan Perez, OPTOMETRISTOptometrist1558411926

Verify Mary Tuthill Ambler 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 LCSW16930
    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. Clinicas Del Camino Real IncVentura, CA

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

132 clinical social worker records list a practice address in Oxnard

They are 132 of the 3,211 NPPES records with a practice address in Oxnard, and 36,261 clinical social worker records in California.

Other clinical social worker records in California

  1. Lynne Aalan, LCSWYountville, CA1417195710
  2. Ahmad Fahim AalemiSacramento, CA1033052410
  3. Rachel Aarons, MSW PHDSanta Barbara, CA1871687822
  4. Shari Aarons, LCSWTarzana, CA1467636845
  5. Mary Aarsheim, LCSWPenn Valley, CA1104192616
  6. Sandra Aase, LCSWRiverside, CA1699872325
  7. Maria Abaci, LCSWSan Rafael, CA1205161924
  8. Louisa AbadaOakland, CA1023502259
  9. Alejandro Abarca, LCSWSonora, CA1538184676
  10. Daisy Abarca, ACSWRoseville, CA1548124779

Common questions

What is Mary Tuthill Ambler, LCSW's NPI number?

Mary Tuthill Ambler, LCSW's National Provider Identifier (NPI) is 1154548899, issued on Apr 20, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Mary Tuthill Ambler, LCSW located?

The NPPES record lists a practice address at 221 Ventura Blvd # 126, Oxnard, CA, 93036. Phone: (805) 436-3444. Providers update this record themselves, so call before visiting.

How can I verify Mary Tuthill Ambler, LCSW's license?

NPPES lists California license number LCSW16930, 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.