DR. SEAN EMERSON TREACY MD
NPI 1003495763
Emergency Medicine in Los Angeles, CA

Q: What is Sean Treacy's NPI number?

The NPI number for Sean Treacy is 1003495763. It was assigned to this individual provider in the NPPES registry on April 7, 2021.

Q: What is Sean Treacy's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

Q: When was this NPI record last updated?

The NPPES record for Sean Treacy was last updated on September 5, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.

Active since April 07, 2021PECOS Enrolled

757 WESTWOOD PLZ STE 1517, LOS ANGELES, CA 90095(310) 825-2111 Get Directions Write a Review

NPPES record last updated: September 5, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 5, 2025, Aug 5, 2025, Jun 26, 2025 and 2 more (5 updates tracked since 2021).

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About Dr. Sean Emerson Treacy Md NPPES

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

DR. SEAN EMERSON TREACY MD (NPI 1003495763) is an individual emergency medicine provider in Los Angeles, California, licensed in California (A192958) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS and is a graduate of Other (2021).

NPPES Registry Identity

NPI1003495763

Entity TypeIndividualMale

Primary Taxonomy207P00000X

Provider Legal NameDR. SEAN EMERSON TREACYCredential: MD

Location Address757 WESTWOOD PLZ STE 1517Los Angeles, CA 90095-1807

Mailing Address5767 W Century Blvd Ste 400Los Angeles, CA 90045-5631

Phone(310) 825-2111

Sole ProprietorNo

Medical School CMSOtherGraduated 2021

Enumeration DateApril 7, 2021

Last NPPES UpdateSeptember 5, 20255 updates tracked since enumeration

NPPES CertifiedSeptember 5, 2025

✔ NPI 1003495763 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207P00000X

License✔ Licensed in CA · A192958

Definition

An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

757 WESTWOOD PLZ STE 1517, Los Angeles, CA 90095

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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)

Dr. Sean Emerson Treacy Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8820507247

PECOS Enrollment IDI20251027002967

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 Reassignments

Medicare enrollment records show Sean Treacy reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Regents Of The Univ Of Ca Emer Med

Same address

Emergency Medicine

757 WESTWOOD PLZ, STE 1419
Los Angeles, CA 90095

Reassigned Medicare billing, California enrollment
135 clinicians in this Medicare group

NPI 1104889138 (310) 825-2111

Emergency Physicians Associates San Jose PC

298 mi

Emergency Medicine

2105 FOREST AVE
San Jose, CA 95128

Reassigned Medicare billing, California enrollment
197 clinicians in this Medicare group

NPI 1306311576 (408) 947-2500

Dhhs Phs Naihs Chinle Comprehensive Health Care Facility

487 mi

General Acute Care Hospital

NAVAJO ROUTE 4
Pinon, AZ 86510

Reassigned Medicare billing, Texas enrollment
476 clinicians in this Medicare group

NPI 1396761565 (928) 725-3220

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 90095 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. JESUS RICARDO TORRES MD, MPH

Emergency Medicine