ORTHOPAEDIC & NEUROSURGERY SPECIALISTS, PLLC
NPI 1033318720
Orthopaedic Surgery in Greenwich, CT
About Orthopaedic & Neurosurgery Specialists, Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ORTHOPAEDIC & NEUROSURGERY SPECIALISTS, PLLC (NPI 1033318720) is a healthcare organization registered as an orthopaedic surgery in Greenwich, Connecticut and active in the NPI registry since July 2007. The organization lists Seth Miller, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 5
Other Names 1
Group Practice 1
Accepted Insurance
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)
Orthopaedic & Neurosurgery Specialists, Pllc 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
323Medicare enrollment records show 323 clinicians reassign Medicare billing to Orthopaedic & Neurosurgery Specialists, PLLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 65 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 15
Nearest to this location (20)
See all 323Source: 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 Orthopaedic & Neurosurgery Specialists, PLLC's NPI number?
The NPI number for Orthopaedic & Neurosurgery Specialists, PLLC is 1033318720. It was assigned to this organization in the NPPES registry on July 13, 2007. The provider is also known as Ons.
Where is Orthopaedic & Neurosurgery Specialists, PLLC located?
Orthopaedic & Neurosurgery Specialists, PLLC is located at 6 Greenwich Office Park, Greenwich, CT 06831. The listed phone number is (203) 869-1145.
What is Orthopaedic & Neurosurgery Specialists, PLLC's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is Orthopaedic & Neurosurgery Specialists, PLLC enrolled in Medicare?
Yes. Orthopaedic & Neurosurgery Specialists, PLLC is registered in the Medicare PECOS enrollment system.
When is Orthopaedic & Neurosurgery Specialists, PLLC's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare DME enrollment for this organization (Connecticut, Physician - Orthopedic/Orthopedic Surgery) 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 Orthopaedic & Neurosurgery Specialists, PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 323 clinicians in 15 Medicare specialties reassign their Medicare billing to Orthopaedic & Neurosurgery Specialists, PLLC. 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. The largest specialties are Physical Therapist in Private Practice (105), Orthopedic Surgery (97) and Diagnostic Radiology (27). Of these, 1 practice at this address and 65 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Orthopaedic & Neurosurgery Specialists, PLLC accept?
Health plans from Anthem Blue Cross and Blue Shield list Orthopaedic & Neurosurgery Specialists, PLLC as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Orthopaedic & Neurosurgery Specialists, PLLC was last updated on October 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 months 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.
# Orthopaedic & Neurosurgery Specialists, Pllc · NPI 1033318720
Orthopaedic Surgery organization in Greenwich, Connecticut. Organization record, active in the CMS NPPES registry since July 13, 2007.
## Identity
- **NPI:** 1033318720 (Entity type: Organization)
- **Enumerated:** July 13, 2007
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **Also known as:** ONS (Other Name)
- **Organization subpart:** No
- **Authorized official:** Seth Miller, PRESIDENT
## Practice location
- **Address:** 6 GREENWICH OFFICE PARK, Greenwich, CT 06831-5151
- **Phone:** (203) 869-1145
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** January 31, 2027 (DME, Connecticut, Physician - Orthopedic/Orthopedic Surgery) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 323 clinicians in 15 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Physical Therapist in Private Practice (105), Orthopedic Surgery (97), Diagnostic Radiology (27); 1 practice at this address and 65 within 10 miles; [full list](https://npiprofile.com/npi/1033318720/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1033318720) · Data from the CMS NPPES public registry.