ADVANCED AMBULATORY ANESTHESIOLOGISTS LLC
NPI 1336142249
Specialist in Millburn, NJ
About Advanced Ambulatory Anesthesiologists Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ADVANCED AMBULATORY ANESTHESIOLOGISTS LLC (NPI 1336142249) is a healthcare organization registered as a specialist in Millburn, New Jersey and active in the NPI registry since May 2005. The organization lists Richard I Stillman, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Advanced Ambulatory Anesthesiologists Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
11Medicare enrollment records show 11 clinicians reassign Medicare billing to Advanced Ambulatory Anesthesiologists LLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 3 within 10 miles. They are listed nearest first.
Clinicians, nearest first (11)
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 Advanced Ambulatory Anesthesiologists LLC's NPI number?
The NPI number for Advanced Ambulatory Anesthesiologists LLC is 1336142249. It was assigned to this organization in the NPPES registry on May 24, 2005.
Where is Advanced Ambulatory Anesthesiologists LLC located?
Advanced Ambulatory Anesthesiologists LLC is located at 37 E Willow St, Millburn, NJ 07041. The listed phone number is (973) 912-8111.
What is Advanced Ambulatory Anesthesiologists LLC's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Advanced Ambulatory Anesthesiologists LLC enrolled in Medicare?
Yes. Advanced Ambulatory Anesthesiologists LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Advanced Ambulatory Anesthesiologists LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 11 clinicians, all in Anesthesiology, reassign their Medicare billing to Advanced Ambulatory Anesthesiologists 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. Of these, 1 practice at this address and 3 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Advanced Ambulatory Anesthesiologists LLC was last updated on October 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.
# Advanced Ambulatory Anesthesiologists Llc · NPI 1336142249
Specialist organization in Millburn, New Jersey. Organization record, active in the CMS NPPES registry since May 24, 2005.
## Identity
- **NPI:** 1336142249 (Entity type: Organization)
- **Enumerated:** May 24, 2005
- **Primary specialty:** Specialist · taxonomy 174400000X
- **Organization subpart:** No
- **Authorized official:** Richard Stillman, PRESIDENT
## Practice location
- **Address:** 37 E WILLOW ST, Millburn, NJ 07041-1416
- **Phone:** (973) 912-8111
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 11 clinicians (Anesthesiology) reassign Medicare billing to this organization (form CMS-855R); 1 practice at this address and 3 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 11, 2023
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Source: [NPI Profile](https://npiprofile.com/npi/1336142249) · Data from the CMS NPPES public registry.