1. Home
  2. Directory
  3. California
  4. Los Angeles
  5. Nurse Practitioner
  6. NPI Profile

ANNA TERESA MENDOZA TSAY ANP-BC
NPI 1003058348
Nurse Practitioner - Adult Health in Los Angeles, CA

Active since April 01, 2009PECOS EnrolledAccepts Medicare Assignment
3913 YORK BLVD, LOS ANGELES, CA 90065(323) 532-1900 Get Directions Write a Review

NPPES record last updated: October 7, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Oct 7, 2021, Mar 10, 2020 (2 updates tracked since 2020).

About Anna Teresa Mendoza Tsay Anp-bc NPPES

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

ANNA TERESA MENDOZA TSAY ANP-BC (NPI 1003058348) is an individual adult health provider in Los Angeles, California, licensed in California (18500) and active in the NPI registry since April 2009. She is enrolled in Medicare PECOS and is a graduate of University Of California, Geffen School Of Medicine (2005).

NPPES Registry Identity

NPI1003058348
Entity TypeIndividualFemale
Primary Taxonomy363LA2200X
Provider Legal NameANNA TERESA MENDOZA TSAYCredential: ANP-BC
Location Address3913 YORK BLVDLos Angeles, CA 90065-3718
Mailing Address393 E Walnut St, Phr Group Provider Enrollment Unit Fl 3Pasadena, CA 91188-0001 · (877) 608-0044 · Fax (877) 514-0903
Phone(323) 532-1900
Sole ProprietorYes
Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 2005
Enumeration DateApril 1, 2009
Last NPPES UpdateOctober 7, 20212 updates tracked since enumeration
NPPES CertifiedOctober 7, 2021
✔ NPI 1003058348 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Adult HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2200X
License✔ Licensed in CA · 18500
3913 YORK BLVD, Los Angeles, CA 90065
Open in Google Maps ↗

Other Names 1

Former Name (1)Anna Teresa Palaganas Mendoza Anp-bc

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

Anna Teresa Mendoza Tsay Anp-bc 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.

PECOS PAC ID840344339
PECOS Enrollment IDI20090818000600
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 Anna Teresa Tsay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Southern California Permanente Medical Group
1.3 mi
Health Maintenance Organization
2626 COLORADO BLVD
Los Angeles, CA 90041
  • Reassigned Medicare billing, California enrollment
  • 13,921 clinicians in this Medicare group
NPI 1013409044 (877) 608-0044

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 90065 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$96.36 typical visit price
range $62.96 – $187.60
Typical copayment $24.09 (range $15.74 – $46.90)
Most-billed visit code 99203
Established Patient
$109.96 typical visit price
range $20.84 – $153.61
Typical copayment $27.49 (range $5.21 – $38.40)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Anna Teresa Tsay's NPI number?

The NPI number for Anna Teresa Tsay is 1003058348. It was assigned to this individual provider in the NPPES registry on April 1, 2009. The provider is also known as Anna Teresa Palaganas Mendoza Anp-Bc.

Where is Anna Teresa Tsay located?

Anna Teresa Tsay practices at 3913 York Blvd, Los Angeles, CA 90065. The listed phone number is (323) 532-1900.

What is Anna Teresa Tsay's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Adult Health, with taxonomy code 363LA2200X.

Is Anna Teresa Tsay enrolled in Medicare?

Yes. Anna Teresa Tsay 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 Anna Teresa Tsay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Anna Teresa Tsay reassigns Medicare benefits to Southern California Permanente Medical Group (Los Angeles, 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 Anna Teresa Tsay'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 Anna Teresa Tsay was last updated on October 7, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.