MS. MARY TUTHILL AMBLER LCSW
NPI 1154548899
Social Worker - Clinical in Oxnard, CA
About Ms. Mary Tuthill Ambler Lcsw NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MS. MARY TUTHILL AMBLER LCSW (NPI 1154548899) is an individual clinical provider in Oxnard, California, licensed in California (LCSW16930) and active in the NPI registry since April 2007. She is enrolled in Medicare PECOS and is a graduate of Other (1988).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Ms. Mary Tuthill Ambler Lcsw is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Mary Ambler reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Oxnard, CA 93036
- Reassigned Medicare billing, California enrollment
- 216 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 93036 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Mary Ambler's NPI number?
The NPI number for Mary Ambler is 1154548899. It was assigned to this individual provider in the NPPES registry on April 20, 2007.
Where is Mary Ambler located?
Mary Ambler practices at 221 Ventura Blvd # 126, Oxnard, CA 93036. The listed phone number is (805) 436-3444.
What is Mary Ambler's specialty?
The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.
Is Mary Ambler enrolled in Medicare?
Yes. Mary Ambler is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Mary Ambler's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Mary Ambler reassigns Medicare benefits to Clinicas Del Camino Real Inc (Oxnard, CA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Mary Ambler's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Mary Ambler was last updated on August 6, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Ms. Mary Tuthill Ambler, LCSW · NPI 1154548899
Clinical provider in Oxnard, California. Individual provider, active in the CMS NPPES registry since April 20, 2007.
## Identity
- **NPI:** 1154548899 (Entity type: Individual)
- **Enumerated:** April 20, 2007
- **Primary specialty:** Social Worker - Clinical · taxonomy 1041C0700X
- **State license:** LCSW16930 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 221 VENTURA BLVD # 126, Oxnard, CA 93036-0277
- **Phone:** (805) 436-3444 · **Fax:** (805) 485-4160
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Clinicas Del Camino Real Inc (NPI 1134369366, Oxnard, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1988
## Record status
- **NPPES last updated:** August 6, 2020
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Source: [NPI Profile](https://npiprofile.com/npi/1154548899) · Data from the CMS NPPES public registry.