KEITH SEIDENBERG, MD LLC
NPI 1336231968
Ophthalmology in Midland Park, NJ
About Keith Seidenberg, Md Llc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
KEITH SEIDENBERG, MD LLC (NPI 1336231968) is a healthcare organization registered as an ophthalmology in Midland Park, New Jersey and active in the NPI registry since September 2006. The organization lists Keith B Seidenberg, Physician, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 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)
Keith Seidenberg, Md Llc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
4Medicare enrollment records show 4 clinicians reassign Medicare billing to Keith Seidenberg, MD LLC, which bills Medicare for the services they deliver. Of these, 1 practice at this address and 2 within 10 miles. They are listed nearest first.
Clinicians, nearest first (4)
Whippany, NJ 07981
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 Keith Seidenberg, MD LLC's NPI number?
The NPI number for Keith Seidenberg, MD LLC is 1336231968. It was assigned to this organization in the NPPES registry on September 29, 2006.
Where is Keith Seidenberg, MD LLC located?
Keith Seidenberg, MD LLC is located at 600 Godwin Ave, Midland Park, NJ 07432. The listed phone number is (201) 447-9101.
What is Keith Seidenberg, MD LLC's specialty?
The primary specialty registered for this NPI is Ophthalmology with taxonomy code 207W00000X.
Is Keith Seidenberg, MD LLC enrolled in Medicare?
Yes. Keith Seidenberg, MD LLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Keith Seidenberg, MD LLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Keith Seidenberg, MD 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. The largest specialties are Optometry (3) and Ophthalmology (1). Of these, 1 practice at this address and 2 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 Keith Seidenberg, MD LLC was last updated on April 9, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Keith Seidenberg, Md Llc · NPI 1336231968
Ophthalmology organization in Midland Park, New Jersey. Organization record, active in the CMS NPPES registry since September 29, 2006.
## Identity
- **NPI:** 1336231968 (Entity type: Organization)
- **Enumerated:** September 29, 2006
- **Primary specialty:** Ophthalmology · taxonomy 207W00000X
- **Organization subpart:** No
- **Authorized official:** Keith Seidenberg, PHYSICIAN
## Practice location
- **Address:** 600 GODWIN AVE, Midland Park, NJ 07432-1468
- **Phone:** (201) 447-9101 · **Fax:** (201) 447-9103
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 4 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Optometry (3), Ophthalmology (1); 1 practice at this address and 2 within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** April 9, 2008
- **Other identifiers:** Medicare NSC 5790270001 (NJ)
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Source: [NPI Profile](https://npiprofile.com/npi/1336231968) · Data from the CMS NPPES public registry.