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MARCUS H LOO MD LLC
NPI 1740433325
Specialist in New York, NY

Active since October 28, 2008
254 CANAL ST, SUITE 3001, NEW YORK, NY 10013(212) 925-8388(212) 941-7426 Get Directions Write a Review

NPPES record last updated: October 28, 2008. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Marcus H Loo Md Llc NPPES

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

MARCUS H LOO MD LLC (NPI 1740433325) is a healthcare organization registered as a specialist in New York, New York and active in the NPI registry since October 2008. The organization lists Marcus H Loo, Ceo, as its authorized official.

NPPES Registry Identity

NPI1740433325
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameMARCUS H LOO MD LLC
Location Address254 CANAL ST, SUITE 3001New York, NY 10013-3501
Mailing Address254 Canal St, Suite 3001New York, NY 10013-3501 · (212) 925-8388 · Fax (212) 941-7426
Phone(212) 925-8388
Fax(212) 941-7426
Organization SubpartNo
Authorized OfficialMarcus H LooCeo · (212) 925-8388
Enumeration DateOctober 28, 2008
✔ NPI 1740433325 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
License✔ Licensed in NY · 159685
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
254 CANAL ST, New York, NY 10013
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Other Identifiers 2

Medicare UPIN3S4012NY
Medicaid01707271NY

Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Marcus H Loo Md Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to Marcus H Loo MD LLC, which bills Medicare for the services this clinician delivers.

Clinician (1)

Marcus Loo, M.D.
Urology
NPI 1053315614
254 CANAL STREET SUITE 3001
New York, NY 10013
(212) 925-8388
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Marcus H Loo MD LLC's NPI number?

The NPI number for Marcus H Loo MD LLC is 1740433325. It was assigned to this organization in the NPPES registry on October 28, 2008.

Where is Marcus H Loo MD LLC located?

Marcus H Loo MD LLC is located at 254 Canal St Suite 3001, New York, NY 10013. The listed phone number is (212) 925-8388.

What is Marcus H Loo MD LLC's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Marcus H Loo MD LLC enrolled in Medicare?

Yes. Marcus H Loo MD LLC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Marcus H Loo MD LLC?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Urology) reassigns their Medicare billing to Marcus H Loo MD LLC. A 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 the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Marcus H Loo MD LLC was last updated on October 28, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.