NPPES file of Aug 9, 2026

Chiara Mae Tosoc

Psychiatric/Mental Health Nurse Practitioner · Concord, CA

Chiara Mae Tosoc is a psychiatric/mental health nurse practitioner with a practice address in Concord, California, and NPI 1174103261, issued on Apr 12, 2021. Check the license (California 95033984, 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 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1174103261
Name
Chiara Mae Tosoc
Primary taxonomy
Psychiatric/Mental Health Nurse Practitioner 363LP0808X
License numbers
95033984 CA
95075722 CA
Self-reported in NPPES; status is on the state search
Practice location
1420 Willow Pass RD, Concord, CA 94520
Phone
(215) 427-5800
Enumerated
Apr 12, 2021
Record last updated
Dec 15, 2025
Medicare enrollment
Enrolled (PECOS I20260409001891); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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 1420 Willow Pass RD

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

  1. John AllenMarriage & Family Therapist1225183643
  2. Leticia Ballesteros, RNAdult Psychiatric/Mental Health Registered Nurse1912051442
  3. Cheryl Berriman, RNAdult Psychiatric/Mental Health Registered Nurse1568516003
  4. Elma BesirovicRehabilitation Practitioner1427812627
  5. Jeffrey BockserMental Health Counselor1285788299
  6. Candelario Castillo, LCSWClinical Social Worker1730540782

Verify Chiara Mae Tosoc 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 95033984
    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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94% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024

51 Medicare Part D claims for 11 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.

  1. Chiara Mae Tosoc51
  2. Specialty average906

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $173.31

6 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Pharmaceuticals, Inc. The 23,362 providers of this specialty with any payment received $1,027.77 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Chiara Mae Tosoc$173.31
  2. Specialty average$1,027.77

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. CO Mhar IncPhiladelphia, PA
  2. Contra Costa CountyConcord, CA

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

Chiara Mae Tosoc among 4,226 psychiatric/mental health nurse practitioner records in California

Chiara Mae Tosoc is one of 4,226 psychiatric/mental health nurse practitioner records with a practice address in California. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 46% of them.

  • NPI issued2021 · 46% of these records are older, 46% newer
  • In a Medicare fileYes · 62% of these records are
  • In the CMS Doctors and Clinicians fileYes · 46% of these records are
  • Graduated2024 · median 2021 among the 1,965 with a school on file
  • Record last updated2025 · 16% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatric/Mental Health Nurse Practitioner providers in California

There are 4,226 psychiatric/mental health nurse practitioner records in California.

The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes

  1. Adam Danko, N.P.Concord, CA 945201821392846
  2. Michael Dionne, PMHNP-BCConcord, CA 945201336035666
  3. Sonia Gomez, N.P.Concord, CA 945201013929066
  4. Gulshan Grewal, NPConcord, CA 945201043147234
  5. Margaret Johnstone, RN NPConcord, CA 945201134229347
  6. Matthew Kubasta, NURSE PRACTITIONERConcord, CA 945201063985455
  7. Olukemi Kuku, DNP, PMHNPConcord, CA 945201114417854
  8. Sonya Lakha, RNConcord, CA 945201689075251

Common questions

What is Chiara Mae Tosoc's NPI number?

Chiara Mae Tosoc's National Provider Identifier (NPI) is 1174103261, issued on Apr 12, 2021. An NPI identifies a provider in billing; it is not a license.

Where is Chiara Mae Tosoc located?

The NPPES record lists a practice address at 1420 Willow Pass RD, Concord, CA, 94520. Phone: (215) 427-5800. Providers update this record themselves, so call before visiting.

How can I verify Chiara Mae Tosoc's license?

NPPES lists California license number 95033984, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Chiara Mae Tosoc prescribe under Medicare Part D?

In 2024, Chiara Mae Tosoc had 51 Medicare Part D claims for 11 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. Part D covers Medicare prescriptions 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.