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LINA KASSAR
NPI 1538052097
Nurse Practitioner - Psychiatric/Mental Health in Glendora, CA

Active since June 02, 2025PECOS EnrolledAccepts Medicare Assignment
510 S GRAND AVE STE 200, GLENDORA, CA 91741(626) 914-1980 Get Directions Write a Review

NPPES record last updated: February 4, 2026. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Feb 4, 2026, Jun 2, 2025 (2 updates tracked since 2025).

About Lina Kassar NPPES

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

LINA KASSAR (NPI 1538052097) is an individual psychiatric/mental health provider in Glendora, California, licensed in California (95035315) and active in the NPI registry since June 2025. She is enrolled in Medicare PECOS and is a graduate of Other (2025).

NPPES Registry Identity

NPI1538052097
Entity TypeIndividualFemale
Primary Taxonomy363LP0808X
Provider Legal NameLINA KASSAR
Location Address510 S GRAND AVE STE 200Glendora, CA 91741-4291
Mailing Address2118 Wilshire Blvd # 1015Santa Monica, CA 90403-5704 · (626) 914-1980 · Fax (626) 914-1984
Phone(626) 914-1980
Sole ProprietorYes
Medical School CMSOtherGraduated 2025
Enumeration DateJune 2, 2025
Last NPPES UpdateFebruary 4, 20262 updates tracked since enumeration
NPPES CertifiedFebruary 4, 2026
✔ NPI 1538052097 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
License✔ Licensed in CA · 95035315
510 S GRAND AVE STE 200, Glendora, CA 91741
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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

Lina Kassar 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 ID8123511391
PECOS Enrollment IDI20251205000840
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 Lina Kassar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

William Gillespie And Associates Inc.
0.9 mi
Psychiatry
510 S GRAND AVE, SUITE 200
Glendora, CA 91741
  • Reassigned Medicare billing, California enrollment
  • 20 clinicians in this Medicare group
NPI 1558771246 (626) 914-1980

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 91741 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.

Other Providers at the Same Location NPPES 7

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MS. JESSICA YESENIA CENDEJAS PSY.D.
Psychologist (Clinical)
510 S GRAND AVE STE 200
GLENDORA, CA 91741
Los Angeles County (626) 914-1980
DR. WILLIAM M. GILLESPIE M.D.
Psychiatry & Neurology (Psychiatry)
510 S GRAND AVE STE 200
GLENDORA, CA 91741
Los Angeles County (626) 914-1980
TERRA HART
Nurse Practitioner (Psychiatric/Mental Health)
510 S GRAND AVE STE 200
GLENDORA, CA 91741
Los Angeles County (626) 914-1980
REBECCA NUILA-CHAE PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
510 S GRAND AVE STE 200
GLENDORA, CA 91741
Los Angeles County (626) 914-1980
AMBER ALYSSA BATRES PMHNP
Nurse Practitioner (Psychiatric/Mental Health)
510 S GRAND AVE STE 200
GLENDORA, CA 91741
Los Angeles County (626) 914-1980
GLADELYNN ADLAO
Registered Nurse
510 S GRAND AVE STE 200
GLENDORA, CA 91741
Los Angeles County (626) 914-1980
NIDA KICHKLA NP
Nurse Practitioner (Psychiatric/Mental Health)
510 S GRAND AVE STE 200
GLENDORA, CA 91741
Los Angeles County (626) 914-1980

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 Lina Kassar's NPI number?

The NPI number for Lina Kassar is 1538052097. It was assigned to this individual provider in the NPPES registry on June 2, 2025.

Where is Lina Kassar located?

Lina Kassar practices at 510 S Grand Ave Ste 200, Glendora, CA 91741. The listed phone number is (626) 914-1980.

What is Lina Kassar's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

Is Lina Kassar enrolled in Medicare?

Yes. Lina Kassar 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 Lina Kassar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lina Kassar reassigns Medicare benefits to William Gillespie And Associates Inc. (Glendora, 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 Lina Kassar'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 Lina Kassar was last updated on February 4, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 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.