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ELIZABETH GUILLEN AG-ACNP-BC
NPI 1962967695
Nurse Practitioner - Acute Care in Los Angeles, CA

Active since February 06, 2019PECOS Enrolled
1520 SAN PABLO ST STE 4300, LOS ANGELES, CA 90033(323) 442-5849 Get Directions Write a Review

NPPES record last updated: November 27, 2023. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 11, 2020, Feb 11, 2019, Feb 6, 2019 (3 updates tracked since 2019).

About Elizabeth Guillen Ag-acnp-bc NPPES

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

ELIZABETH GUILLEN AG-ACNP-BC (NPI 1962967695) is an individual acute care provider in Los Angeles, California, licensed in California (NP95005462) and active in the NPI registry since February 2019. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1962967695
Entity TypeIndividualFemale
Primary Taxonomy363LA2100X
Provider Legal NameELIZABETH GUILLENCredential: AG-ACNP-BC
Location Address1520 SAN PABLO ST STE 4300Los Angeles, CA 90033-5330
Mailing AddressPo Box 31309Los Angeles, CA 90031-0309 · (323) 442-5948
Phone(323) 442-5849
Sole ProprietorNo
Enumeration DateFebruary 6, 2019
Last NPPES UpdateNovember 27, 20233 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2020
✔ NPI 1962967695 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyNurse Practitioner · Acute CarePhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LA2100X
License✔ Licensed in CA · NP95005462
1520 SAN PABLO ST STE 4300, Los Angeles, CA 90033
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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 (PECOS)

Elizabeth Guillen Ag-acnp-bc 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 Guillen 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
$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 20

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

DR. MATTHEW E POWERS M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1520 SAN PABLO ST STE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5849
NIDAL ALKAFARNA
Physician Assistant (Surgical)
1520 SAN PABLO ST STE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5849
JAYNITA HASMUKH PATEL RD
Dietitian, Registered
1520 SAN PABLO ST STE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-6964
DR. SANJEET GIRISH PATEL MD
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1520 SAN PABLO ST STE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5849
DR. JONATHAN AARON PRAEGER M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1520 SAN PABLO ST STE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5849
CHERILYN R TARALLO NP
Nurse Practitioner (Acute Care)
1520 SAN PABLO ST STE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5849
ELIZABETH ANTONIO MIRANDA MPH
Surgery (Vascular Surgery)
1520 SAN PABLO ST STE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5755
RAYMOND CHURK-YIN LEE M.D.
Thoracic Surgery (Cardiothoracic Vascular Surgery)
1520 SAN PABLO ST STE 4300
LOS ANGELES, CA 90033
Los Angeles County (323) 442-5849

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 Guillen's NPI number?

The NPI number for Elizabeth Guillen is 1962967695. It was assigned to this individual provider in the NPPES registry on February 6, 2019.

Where is Elizabeth Guillen located?

Elizabeth Guillen practices at 1520 San Pablo St Ste 4300, Los Angeles, CA 90033. The listed phone number is (323) 442-5849.

What is Elizabeth Guillen's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Acute Care, with taxonomy code 363LA2100X.

Is Elizabeth Guillen enrolled in Medicare?

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

Which organization bills Medicare for Elizabeth Guillen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Elizabeth Guillen 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 Guillen'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 Guillen was last updated on November 27, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.