ANTOINETTE MASTRONARDI
NPI 1700430766
Counselor - Mental Health in San Diego, CA

Active since July 29, 2019PECOS Enrolled
734 10TH AVE, SAN DIEGO, CA 92101(619) 239-4663 Get Directions Write a Review

NPPES record last updated: July 29, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Antoinette Mastronardi NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

ANTOINETTE MASTRONARDI (NPI 1700430766) is an individual mental health provider in San Diego, California and active in the NPI registry since July 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1700430766
Entity TypeIndividualFemale
Primary Taxonomy101YM0800X
Provider Legal NameANTOINETTE MASTRONARDI
Location Address734 10TH AVESan Diego, CA 92101-6502
Mailing Address734 10th AveSan Diego, CA 92101-6502 · (619) 239-4663
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateJuly 29, 2019
✔ NPI 1700430766 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCounselor · Mental HealthBehavioral Health & Social Service Providers
Taxonomy Code101YM0800X
734 10TH AVE, San Diego, CA 92101

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Antoinette Mastronardi is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4385111079
PECOS Enrollment IDI20260430001732
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Antoinette Mastronardi reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mental Health (Including Community Mental Health Center)
402 W BROADWAY STE 400
San Diego, CA 92101
  • Reassigned Medicare billing, California enrollment
  • 545 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.

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.

Counselor (Mental Health)
734 10TH AVE
SAN DIEGO, CA 92101
Registered Nurse (Psychiatric/Mental Health, Adult)
734 10TH AVE
SAN DIEGO, CA 92101
Marriage & Family Therapist
734 10TH AVE
SAN DIEGO, CA 92101
Counselor (Mental Health)
734 10TH AVE
SAN DIEGO, CA 92101
Licensed Vocational Nurse
734 10TH AVE
SAN DIEGO, CA 92101
Counselor (Mental Health)
734 10TH AVE
SAN DIEGO, CA 92101
Licensed Vocational Nurse
734 10TH AVE
SAN DIEGO, CA 92101
Registered Nurse
734 10TH AVE
SAN DIEGO, CA 92101

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 Antoinette Mastronardi's NPI number?

The NPI number for Antoinette Mastronardi is 1700430766. It was assigned to this individual provider in the NPPES registry on July 29, 2019.

Where is Antoinette Mastronardi located?

Antoinette Mastronardi practices at 734 10th Ave, San Diego, CA 92101. The listed phone number is (619) 239-4663.

What is Antoinette Mastronardi's specialty?

The primary specialty registered for this NPI is Counselor, specializing in Mental Health, with taxonomy code 101YM0800X.

Is Antoinette Mastronardi enrolled in Medicare?

Yes. Antoinette Mastronardi is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Antoinette Mastronardi's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Antoinette Mastronardi reassigns Medicare benefits to Cyti Health PC (San Diego, 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 Antoinette Mastronardi'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 Antoinette Mastronardi was last updated on July 29, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.