CHIARA MAE TOSOC
NPI 1174103261
Nurse Practitioner - Psychiatric/Mental Health in Concord, CA
About Chiara Mae Tosoc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHIARA MAE TOSOC (NPI 1174103261) is an individual psychiatric/mental health provider in Concord, California, licensed in California (95033984) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of Other (2024).
NPPES Registry Identity
Specialties & Licenses 2
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
Chiara Mae Tosoc 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 Reassignments
2Medicare enrollment records show Chiara Mae Tosoc reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Concord, CA 94520
- Reassigned Medicare billing, California enrollment
- 530 clinicians in this Medicare group
Philadelphia, PA 19133
- Reassigned Medicare billing, Pennsylvania enrollment
- Medicare enrollment name: Co Mhar Inc
- 38 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 94520 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CONCORD, CA 94520
CONCORD, CA 94520
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 Chiara Mae Tosoc's NPI number?
The NPI number for Chiara Mae Tosoc is 1174103261. It was assigned to this individual provider in the NPPES registry on April 12, 2021.
Where is Chiara Mae Tosoc located?
Chiara Mae Tosoc practices at 1420 Willow Pass Rd, Concord, CA 94520. The listed phone number is (215) 427-5800.
What is Chiara Mae Tosoc's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.
Is Chiara Mae Tosoc enrolled in Medicare?
Yes. Chiara Mae Tosoc 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 organizations bill Medicare for Chiara Mae Tosoc's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Chiara Mae Tosoc reassigns Medicare benefits to 2 organizations: Contra Costa County (Concord, CA) and Comhar, Inc (Philadelphia, PA). Each 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 Chiara Mae Tosoc'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 Chiara Mae Tosoc was last updated on December 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 months 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.
# Chiara Mae Tosoc · NPI 1174103261
Psychiatric/Mental Health physician in Concord, California. Individual provider, active in the CMS NPPES registry since April 12, 2021.
## Identity
- **NPI:** 1174103261 (Entity type: Individual)
- **Enumerated:** April 12, 2021
- **Primary specialty:** Nurse Practitioner - Psychiatric/Mental Health · taxonomy 363LP0808X
- **State license:** 95033984 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 1420 WILLOW PASS RD, Concord, CA 94520-5823
- **Phone:** (215) 427-5800
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Contra Costa County (NPI 1023188489, Concord, CA); Comhar, Inc (NPI 1013043702, Philadelphia, PA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2024
## Record status
- **NPPES last updated:** December 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1174103261) · Data from the CMS NPPES public registry.