DR. JAHAN AGHALAR M.D.
NPI 1346474517
Internal Medicine in Commack, NY
About Dr. Jahan Aghalar M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JAHAN AGHALAR M.D. (NPI 1346474517) is an individual internal medicine provider in Commack, New York, licensed in New York (251445) and active in the NPI registry since May 2009. He is enrolled in Medicare PECOS, is affiliated with North Shore University Hospital, and is a graduate of Albert Einstein College Of Medicine Of Yeshiva University (2007).
NPPES Registry Identity
Specialties & Licenses
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
Dr. Jahan Aghalar 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
4Medicare enrollment records show Jahan Aghalar reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Commack, NY 11725
- Reassigned Medicare billing, New York enrollment
- 265 clinicians in this Medicare group
Commack, NY 11725
- Reassigned Medicare billing, New York enrollment
- 572 clinicians in this Medicare group
Port Jefferson Station, NY 11776
- Reassigned Medicare billing, New York enrollment
- 636 clinicians in this Medicare group
New York, NY 10021
- Reassigned Medicare billing, New York enrollment
- 514 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 78
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 5
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
North Shore University Hospital
Acute Care Hospitals · Manhasset, NYSt Francis Hospital - The Heart Center
Acute Care Hospitals · Roslyn, NYLong Island Jewish Medical Center
Acute Care Hospitals · New Hyde Park, NYNyu Langone Hospitals
Acute Care Hospitals · New York, NYChsli St Joseph Hospital
Acute Care Hospitals · Bethpage, NYPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 11725 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Jahan Aghalar's NPI number?
The NPI number for Jahan Aghalar is 1346474517. It was assigned to this individual provider in the NPPES registry on May 4, 2009.
Where is Jahan Aghalar located?
Jahan Aghalar practices at 650 Commack Rd, Commack, NY 11725. The listed phone number is (631) 623-4000.
What is Jahan Aghalar's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Jahan Aghalar enrolled in Medicare?
Yes. Jahan Aghalar 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 Jahan Aghalar's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jahan Aghalar reassigns Medicare benefits to 4 organizations: Mskcc Regional Network (Commack, NY), North Shore Medical Group Of The Mount Sinai School Of Medicine (Commack, NY), North Shore Hematology Oncology Associates PC (Port Jefferson Station, NY) and Memorial Solid Tumor Group (New York, NY). 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 Jahan Aghalar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Jahan Aghalar affiliated with any hospitals?
According to CMS data, Jahan Aghalar is affiliated with North Shore University Hospital, St Francis Hospital - The Heart Center, Long Island Jewish Medical Center, Nyu Langone Hospitals and Chsli St Joseph Hospital.
When was this NPI record last updated?
The NPPES record for Jahan Aghalar was last updated on July 22, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.