Marcus H Loo MD LLC
NPI 1740433325 · Specialist · New York, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcus H Loo MD LLC is a Specialist organization in New York, NY (NPI 1740433325).
Provider details
- NPI number
- 1740433325
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Marcus Loo, Ceo(212) 925-8388
- License
- 159685 (NY)
Specialties & taxonomies
Other Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-10-28
- Last updated
- 2008-10-28
Frequently asked questions
- What is Marcus H Loo MD LLC's NPI number?
- Marcus H Loo MD LLC's National Provider Identifier (NPI) is 1740433325, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Marcus H Loo MD LLC?
- Marcus H Loo MD LLC is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is Marcus H Loo MD LLC located?
- Marcus H Loo MD LLC's practice location on file with NPPES is 254 Canal St, New York, NY 10013-3501.
- What is Marcus H Loo MD LLC's phone number?
- The practice phone number listed in the NPPES registry for Marcus H Loo MD LLC is (212) 925-8388.
- Does Marcus H Loo MD LLC accept Medicare?
- Marcus H Loo MD LLC is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Marcus H Loo MD LLC?
- The authorized official listed on Marcus H Loo MD LLC's NPPES record is Marcus Loo, Ceo. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Marcus H Loo MD LLC's NPI active?
- Yes — Marcus H Loo MD LLC's NPI (1740433325) is active in the NPPES registry as of the last update on 2008-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.