Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. OSCAR ALONSO GAYOSO LIVIAC MD
NPI 1053195008
Student in an Organized Health Care Education/Training Program in Boston, MA

Active since August 22, 2023PECOS Enrolled
800 WASHINGTON ST # 238, BOSTON, MA 02111(617) 636-7010(617) 636-7010 Get Directions Write a Review

NPPES record last updated: July 8, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

Record update history: Jul 8, 2026, Mar 7, 2024, Aug 22, 2023 (3 updates tracked since 2023).

About Dr. Oscar Alonso Gayoso Liviac Md NPPES

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

DR. OSCAR ALONSO GAYOSO LIVIAC MD (NPI 1053195008) is an individual student in an organized health care education/training program in Boston, Massachusetts, licensed in Massachusetts (3020055) and active in the NPI registry since August 2023. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1053195008
Entity TypeIndividualMale
Primary Taxonomy390200000X
Provider Legal NameDR. OSCAR ALONSO GAYOSO LIVIACCredential: MD
Location Address800 WASHINGTON ST # 238Boston, MA 02111-1552
Mailing Address800 Washington St # 238Boston, MA 02111-1552 · (617) 636-7010 · Fax (617) 636-7100
Fax(617) 636-7010
Sole ProprietorNo
Enumeration DateAugust 22, 2023
Last NPPES UpdateJuly 8, 20263 updates tracked since enumeration
NPPES CertifiedJuly 8, 2026
NPI 1053195008 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Taxonomy Code390200000X
License Licensed in MA · 3020055
Definition

An individual who is enrolled in an organized health care education/training program leading to a degree, certification, registration, and/or licensure to provide health care.

800 WASHINGTON ST # 238, Boston, MA 02111

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Oscar Alonso Gayoso Liviac 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.

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.

Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST # 238
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST # 238
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST # 238
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST # 238
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST # 238
BOSTON, MA 02111
Internal Medicine
800 WASHINGTON ST # 238
BOSTON, MA 02111
Student in an Organized Health Care Education/Training Program
800 WASHINGTON ST # 238
BOSTON, MA 02111

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 Oscar Gayoso Liviac's NPI number?

The NPI number for Oscar Gayoso Liviac is 1053195008. It was assigned to this individual provider in the NPPES registry on August 22, 2023.

Where is Oscar Gayoso Liviac located?

Oscar Gayoso Liviac practices at 800 Washington St # 238, Boston, MA 02111. The listed phone number is (617) 636-7010.

What is Oscar Gayoso Liviac's specialty?

The primary specialty registered for this NPI is Student in an Organized Health Care Education/Training Program with taxonomy code 390200000X.

Is Oscar Gayoso Liviac enrolled in Medicare?

Yes. Oscar Gayoso Liviac is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Oscar Gayoso Liviac was last updated on July 8, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.