MILLENNIUM AMBULATORY SURGERY CENTER, LLC
NPI 1104068485
Clinic/Center - Ambulatory Surgical in Brooklyn, NY
About Millennium Ambulatory Surgery Center, Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MILLENNIUM AMBULATORY SURGERY CENTER, LLC (NPI 1104068485) is a healthcare organization registered as an ambulatory surgical in Brooklyn, New York and active in the NPI registry since April 2009. The organization lists Michael Ash, Administrator, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Millennium Ambulatory Surgery Center, Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by January 31, 2027
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Millennium Ambulatory Surgery Center, LLC, which bills Medicare for the services this clinician delivers.
Clinician (1)
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 Millennium Ambulatory Surgery Center, LLC's NPI number?
The NPI number for Millennium Ambulatory Surgery Center, LLC is 1104068485. It was assigned to this organization in the NPPES registry on April 1, 2009.
Where is Millennium Ambulatory Surgery Center, LLC located?
Millennium Ambulatory Surgery Center, LLC is located at 1408 Ocean Avenue 1st Floor, Brooklyn, NY 11230. The listed phone number is (718) 725-8900.
What is Millennium Ambulatory Surgery Center, LLC's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Ambulatory Surgical, with taxonomy code 261QA1903X.
Is Millennium Ambulatory Surgery Center, LLC enrolled in Medicare?
Yes. Millennium Ambulatory Surgery Center, LLC is registered in the Medicare PECOS enrollment system.
When is Millennium Ambulatory Surgery Center, LLC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (New York, Ambulatory Surgical Center) is due for revalidation by January 31, 2027. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Millennium Ambulatory Surgery Center, LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Physical Medicine and Rehabilitation) reassigns their Medicare billing to Millennium Ambulatory Surgery Center, 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 Millennium Ambulatory Surgery Center, LLC was last updated on July 1, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Millennium Ambulatory Surgery Center, Llc · NPI 1104068485
Ambulatory Surgical organization in Brooklyn, New York. Organization record, active in the CMS NPPES registry since April 1, 2009.
## Identity
- **NPI:** 1104068485 (Entity type: Organization)
- **Enumerated:** April 1, 2009
- **Primary specialty:** Clinic/Center - Ambulatory Surgical · taxonomy 261QA1903X
- **Organization subpart:** No
- **Authorized official:** Michael Ash, ADMINISTRATOR
## Practice location
- **Address:** 1408 OCEAN AVENUE, 1ST FLOOR, Brooklyn, NY 11230
- **Phone:** (718) 725-8900 · **Fax:** (718) 876-0343
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** January 31, 2027 (Non-DME Part B, New York, Ambulatory Surgical Center) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 1 clinician (Physical Medicine and Rehabilitation) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 1, 2011
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Source: [NPI Profile](https://npiprofile.com/npi/1104068485) · Data from the CMS NPPES public registry.