ISAAC NAMDAR M.D.
NPI 1326132986
Specialist in New York, NY
About Isaac Namdar M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ISAAC NAMDAR M.D. (NPI 1326132986) is an individual specialist in New York, New York, licensed in New York (A201725-1) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, is affiliated with Mount Sinai Beth Israel, and is a graduate of State University Of New York At Stony Brook, School Of Medicine (1994).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Isaac Namdar M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Isaac Namdar reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
New York, NY 10018
- Reassigned Medicare billing, New York enrollment
- 345 clinicians in this Medicare group
Hackensack, NJ 07601
- Reassigned Medicare billing, New York enrollment
- 9 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 11
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Mount Sinai Beth Israel
Acute Care Hospitals · New York, NYOther Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW YORK, NY 10019
NEW YORK, NY 10019
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 Isaac Namdar's NPI number?
The NPI number for Isaac Namdar is 1326132986. It was assigned to this individual provider in the NPPES registry on October 3, 2006.
Where is Isaac Namdar located?
Isaac Namdar practices at 425 W 59th St 10th Floor, New York, NY 10019. The listed phone number is (212) 262-4444.
What is Isaac Namdar's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Isaac Namdar enrolled in Medicare?
Yes. Isaac Namdar is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Isaac Namdar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Isaac Namdar reassigns Medicare benefits to 2 organizations: Icahn School Of Medicine At Mount Sinai (New York, NY) and Head & Neck Surgical Group, LLC (Hackensack, NJ). Each 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 Isaac Namdar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Isaac Namdar affiliated with any hospitals?
According to CMS data, Isaac Namdar is affiliated with Mount Sinai Beth Israel.
When was this NPI record last updated?
The NPPES record for Isaac Namdar was last updated on August 12, 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.
# Isaac Namdar, M.D. · NPI 1326132986
Specialist provider in New York, New York. Individual provider, active in the CMS NPPES registry since October 3, 2006.
## Identity
- **NPI:** 1326132986 (Entity type: Individual)
- **Enumerated:** October 3, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **State license:** A201725-1 (New York)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 425 W 59TH ST, 10TH FLOOR, New York, NY 10019-1104
- **Phone:** (212) 262-4444 · **Fax:** (212) 523-8165
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Icahn School Of Medicine At Mount Sinai (NPI 1275802811, New York, NY); Head & Neck Surgical Group, LLC (NPI 1063509800, Hackensack, NJ) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** State University Of New York At Stony Brook, School Of Medicine, class of 1994
## Record status
- **NPPES last updated:** August 12, 2008
- **Other identifiers:** Medicaid 02078935 (NY); Medicare UPIN H16061 (NY); Medicare PIN 11Z075F051 (NY); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1326132986) · Data from the CMS NPPES public registry.