Harlem Rheumatology LLC
NPI 1548530702 · Specialist · New York, NY
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Harlem Rheumatology LLC is a Specialist organization in New York, NY (NPI 1548530702).
Provider details
- NPI number
- 1548530702
- Entity type
- Organization
- Primary specialty
- SpecialistOther Service Providers
- Organization subpart
- No
- Authorized official
- Michael Naaendorp, Owner(212) 360-5752
- License
- 229836 (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
14 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
Other names (DBA / former)
- Other name
- Michael Naarendorp
Registry dates
- Enumerated
- 2012-01-05
- Last updated
- 2012-03-16
Frequently asked questions
- What is Harlem Rheumatology LLC's NPI number?
- Harlem Rheumatology LLC's National Provider Identifier (NPI) is 1548530702, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Harlem Rheumatology LLC?
- Harlem Rheumatology LLC is classified in the NPPES registry as Specialist (Other Service Providers).
- Where is Harlem Rheumatology LLC located?
- Harlem Rheumatology LLC's practice location on file with NPPES is 301 W 118th St, New York, NY 10026-1049.
- What is Harlem Rheumatology LLC's phone number?
- The practice phone number listed in the NPPES registry for Harlem Rheumatology LLC is (212) 360-5752.
- Does Harlem Rheumatology LLC accept Medicare?
- Harlem Rheumatology 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 Harlem Rheumatology LLC?
- The authorized official listed on Harlem Rheumatology LLC's NPPES record is Michael Naaendorp, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Harlem Rheumatology LLC's NPI active?
- Yes — Harlem Rheumatology LLC's NPI (1548530702) is active in the NPPES registry as of the last update on 2012-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.