DR. ELIZABETH A. GROSS PH.D.
NPI 1700945409
Psychologist - Clinical in Los Angeles, CA

Q: What is Elizabeth Gross's NPI number?

The NPI number for Elizabeth Gross is 1700945409. It was assigned to this individual provider in the NPPES registry on December 8, 2006. The provider is also known as Elizabeth A. Firth Ph.D..

Q: What is Elizabeth Gross's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Q: When was this NPI record last updated?

The NPPES record for Elizabeth Gross was last updated on May 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.

Active since December 08, 2006PECOS Enrolled

1500 SAN PABLO ST, LOS ANGELES, CA 90033(323) 442-7400 Get Directions Write a Review

NPPES record last updated: May 6, 2022. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 6, 2022, May 28, 2019 (2 updates tracked since 2019).

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About Dr. Elizabeth A. Gross Ph.d. NPPES

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

DR. ELIZABETH A. GROSS PH.D. (NPI 1700945409) is an individual clinical provider in Los Angeles, California, licensed in California (PSY17504) and active in the NPI registry since December 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Los Angeles.

NPPES Registry Identity

NPI1700945409

Entity TypeIndividualFemale

Primary Taxonomy103TC0700X

Provider Legal NameDR. ELIZABETH A. GROSSCredential: PH.D.

Location Address1500 SAN PABLO STLos Angeles, CA 90033

Mailing AddressPo Box 31309Los Angeles, CA 90031-0309 · (323) 442-7400

Phone(323) 442-7400

Sole ProprietorYes

Enumeration DateDecember 8, 2006

Last NPPES UpdateMay 6, 20222 updates tracked since enumeration

NPPES CertifiedMay 6, 2022

✔ NPI 1700945409 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychologist · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code103TC0700X

License✔ Licensed in CA · PSY17504

Definition

A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

1500 SAN PABLO ST, Los Angeles, CA 90033

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Other Names 1

Former Name (1)Elizabeth A. Firth Ph.d.

Secondary Practice Location 1

Location 1550 S. Vermont Ave., 11th FloorLos Angeles, CA 90020 · Phone (213) 738-4253

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Elizabeth A. Gross Ph.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Elizabeth Gross reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Usc Care Medical Group, Inc

Same address

General Practice

1520 SAN PABLO ST
Los Angeles, CA 90033

Reassigned Medicare billing, California enrollment
2,445 clinicians in this Medicare group

NPI 1902846306 (323) 442-5955

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 90033 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

$187.60 typical visit price

range $62.96 – $187.60

Typical copayment $46.90 (range $15.74 – $46.90)

Most-billed visit code 99205

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 20

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

MRS. CATHY KIEM NGO CRNA

Nurse Anesthetist, Certified Registered

1500 SAN PABLO ST
LOS ANGELES, CA 90033

Los Angeles County (323) 442-7400

DR. THOMAS ALLEN BUCHANAN M.D.

Internal Medicine

1500 SAN PABLO ST, 3 NORTH UNIVERSITY HOSPITAL
LOS ANGELES, CA 90033

Los Angeles County (323) 442-9576

DR. KASHIF TANVEER KHAN M.D.

Anesthesiology

1500 SAN PABLO ST
LOS ANGELES, CA 90033

Los Angeles County (323) 442-7400

BARBARA LEUNG

Occupational Therapist

1500 SAN PABLO ST
LOS ANGELES, CA 90033

Los Angeles County (800) 272-2273

MELANIE KUSONRUKSA M.D.

Anesthesiology

1500 SAN PABLO ST
LOS ANGELES, CA 90033

Los Angeles County (323) 442-7400

KAREN KIM PHARMD

Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)

1500 SAN PABLO ST
LOS ANGELES, CA 90033

Los Angeles County (323) 442-9385

DR. SHALINI SUNIL SHAH M.D.

Anesthesiology

1500 SAN PABLO ST
LOS ANGELES, CA 90033

Los Angeles County (714) 261-3585

TYLER DANIEL COHAN

Student in an Organized Health Care Education/Training Program

1500 SAN PABLO ST
LOS ANGELES, CA 90033

Los Angeles County (800) 872-2273

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 Elizabeth Gross's NPI number?

The NPI number for Elizabeth Gross is 1700945409. It was assigned to this individual provider in the NPPES registry on December 8, 2006. The provider is also known as Elizabeth A. Firth Ph.D..

Where is Elizabeth Gross located?

Elizabeth Gross practices at 1500 San Pablo St, Los Angeles, CA 90033. The listed phone number is (323) 442-7400.

What is Elizabeth Gross's specialty?

The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.

Is Elizabeth Gross enrolled in Medicare?

Yes. Elizabeth Gross is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Elizabeth Gross's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Gross reassigns Medicare benefits to Usc Care Medical Group, Inc (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 Elizabeth Gross'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 Elizabeth Gross was last updated on May 6, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.