HASAN ASIF AHMAD MD
NPI 1255478517
Internal Medicine - Interventional Cardiology in Valhalla, NY
About Hasan Asif Ahmad Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
HASAN ASIF AHMAD MD (NPI 1255478517) is an individual interventional cardiology provider in Valhalla, New York, licensed in New York (247990) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS, is affiliated with Westchester Medical Center, and is a graduate of University Of Texas Medical School At San Antonio (1999).
NPPES Registry Identity
Specialties & Licenses 2
Accepted Insurance
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
Hasan Asif Ahmad Md 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 Hasan Ahmad reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Valhalla, NY 10595
- Reassigned Medicare billing, New York enrollment
- 1,663 clinicians in this Medicare group
Norfolk, VA 23502
- Reassigned Medicare billing, Virginia enrollment
- 1,901 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 19
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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Westchester Medical Center
Acute Care Hospitals · Valhalla, NYSentara Leigh Hospital
Acute Care Hospitals · Norfolk, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 10595 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
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.
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
VALHALLA, NY 10595
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 Hasan Ahmad's NPI number?
The NPI number for Hasan Ahmad is 1255478517. It was assigned to this individual provider in the NPPES registry on January 30, 2007.
Where is Hasan Ahmad located?
Hasan Ahmad practices at 100 Woods Rd, Valhalla, NY 10595. The listed phone number is (914) 909-6900.
What is Hasan Ahmad's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Interventional Cardiology, with taxonomy code 207RI0011X.
Is Hasan Ahmad enrolled in Medicare?
Yes. Hasan Ahmad 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 Hasan Ahmad's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hasan Ahmad reassigns Medicare benefits to 2 organizations: Westchester Medical Center Advanced Physician Services PC (Valhalla, NY) and Sentara Medical Group (Norfolk, VA). 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 Hasan Ahmad's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Hasan Ahmad accept?
Health plans from Oscar Insurance Company list Hasan Ahmad 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.
Is Hasan Ahmad affiliated with any hospitals?
According to CMS data, Hasan Ahmad is affiliated with Westchester Medical Center and Sentara Leigh Hospital.
When was this NPI record last updated?
The NPPES record for Hasan Ahmad was last updated on December 9, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.