MARK LEE BARR MD
NPI 1922039577
Thoracic Surgery (Cardiothoracic Vascular Surgery) in Los Angeles, CA

Q: What is Mark Barr's NPI number?

The NPI number for Mark Barr is 1922039577. It was assigned to this individual provider in the NPPES registry on July 5, 2006.

Q: What is Mark Barr's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Q: When was this NPI record last updated?

The NPPES record for Mark Barr 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.

Active since July 05, 2006PECOS Enrolled

1520 SAN PABLO ST, SUITE 4300, LOS ANGELES, CA 90033(323) 442-5849(323) 442-5956 Get Directions Write a Review

NPPES record last updated: November 27, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 11, 2020, May 23, 2018 (2 updates tracked since 2018).

On this page

About Mark Lee Barr Md NPPES

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

MARK LEE BARR MD (NPI 1922039577) is an individual thoracic surgery (cardiothoracic vascular surgery) provider in Los Angeles, California, licensed in California (G75945) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1922039577

Entity TypeIndividualMale

Primary Taxonomy208G00000X

Provider Legal NameMARK LEE BARRCredential: MD

Location Address1520 SAN PABLO ST, SUITE 4300Los Angeles, CA 90033

Mailing AddressPo Box 31309Los Angeles, CA 90031-0309 · (323) 442-5849

Phone(323) 442-5849

Fax(323) 442-5956

Sole ProprietorNo

Enumeration DateJuly 5, 2006

Last NPPES UpdateNovember 27, 20232 updates tracked since enumeration

NPPES CertifiedSeptember 11, 2020

✔ NPI 1922039577 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyThoracic Surgery (Cardiothoracic Vascular Surgery)Allopathic & Osteopathic Physicians

Taxonomy Code208G00000X

License✔ Licensed in CA · G75945

Definition

A thoracic surgeon provides the operative, perioperative and critical care of patients with pathologic conditions within the chest. Included is the surgical care of coronary artery disease, cancers of the lung, esophagus and chest wall, abnormalities of the trachea, abnormalities of the great vessels and heart valves, congenital anomalies, tumors of the mediastinum and diseases of the diaphragm. The management of the airway and injuries of the chest is within the scope of the specialty.

1520 SAN PABLO ST, Los Angeles, CA 90033

Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mark Lee Barr Md 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 Mark Barr 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

$77.96 typical visit price

range $20.84 – $153.61

Typical copayment $19.49 (range $5.21 – $38.40)

Most-billed visit code 99213

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. CAROLINE HWANG M.D.

Internal Medicine (Gastroenterology)

1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5100

GISELLE MARIA PETZINGER M.D.

Psychiatry & Neurology (Neurology)

1520 SAN PABLO ST, SUITE 3000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5710

LIGAYA CASTILLO

Nurse Practitioner

1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5100

ERICA ZOE SHOEMAKER MD

Psychiatry & Neurology (Psychiatry)

1520 SAN PABLO ST, STE 1652
LOS ANGELES, CA 90033

Los Angeles County (323) 442-6000

DR. MICHELE TORTORA PATO M.D.

Psychiatry & Neurology (Psychiatry)

1520 SAN PABLO ST, STE1652
LOS ANGELES, CA 90033

Los Angeles County (323) 442-6000

DR. EDY E SOFFER M.D.

Internal Medicine (Gastroenterology)

1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5100

DR. TRACY DEBRA LAWRENCE M.D.

Internal Medicine (Cardiovascular Disease)

1520 SAN PABLO ST, SUITE 1000
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5100

CAROLYN L. KALOOSTIAN MD

Family Medicine (Geriatric Medicine)

1520 SAN PABLO ST, 1ST FLOOR
LOS ANGELES, CA 90033

Los Angeles County (323) 442-5900

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 Mark Barr's NPI number?

The NPI number for Mark Barr is 1922039577. It was assigned to this individual provider in the NPPES registry on July 5, 2006.

Where is Mark Barr located?

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

What is Mark Barr's specialty?

The primary specialty registered for this NPI is Thoracic Surgery (Cardiothoracic Vascular Surgery) with taxonomy code 208G00000X.

Is Mark Barr enrolled in Medicare?

Yes. Mark Barr is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Mark Barr's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Mark Barr 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 Mark Barr'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 Mark Barr 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.