DR. HARDAWAN AHMED HASSAN MD
NPI 1861855991
Internal Medicine in Trenton, NJ
About Dr. Hardawan Ahmed Hassan Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. HARDAWAN AHMED HASSAN MD (NPI 1861855991) is an individual internal medicine provider in Trenton, New Jersey, licensed in Virginia (0101267109) and active in the NPI registry since April 2016. He is enrolled in Medicare PECOS, is affiliated with Riverside Regional Medical Center, and is a graduate of Other (1998).
NPPES Registry Identity
Specialties & Licenses 3
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
Dr. Hardawan Ahmed Hassan 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 Hardawan Hassan reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Gloucester, VA 23061
- Reassigned Medicare billing, Virginia enrollment
- 1,097 clinicians in this Medicare group
Salem, VA 24153
- Reassigned Medicare billing, Virginia enrollment
- 181 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 7
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.
Riverside Regional Medical Center
Acute Care Hospitals · Newport News, VARiverside Walter Reed Hospital
Acute Care Hospitals · Gloucester, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 08638 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 3
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.
TRENTON, NJ 08638
TRENTON, NJ 08638
TRENTON, NJ 08638
TRENTON, NJ 08638
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 Hardawan Hassan's NPI number?
The NPI number for Hardawan Hassan is 1861855991. It was assigned to this individual provider in the NPPES registry on April 5, 2016.
Where is Hardawan Hassan located?
Hardawan Hassan practices at 750 Brunswick Ave, Trenton, NJ 08638. The listed phone number is (609) 394-6031.
What is Hardawan Hassan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Hardawan Hassan enrolled in Medicare?
Yes. Hardawan Hassan 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 Hardawan Hassan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Hardawan Hassan reassigns Medicare benefits to 2 organizations: Riverside Physician Services Inc (Gloucester, VA) and Lake Spring Physician Services, LLC (Salem, 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 Hardawan Hassan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Hardawan Hassan accept?
Health plans from Oscar Health and Oscar Insurance Company list Hardawan Hassan 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 Hardawan Hassan affiliated with any hospitals?
According to CMS data, Hardawan Hassan is affiliated with Riverside Regional Medical Center and Riverside Walter Reed Hospital.
When was this NPI record last updated?
The NPPES record for Hardawan Hassan was last updated on May 10, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Hardawan Ahmed Hassan, MD · NPI 1861855991
Internal Medicine physician in Trenton, New Jersey. Individual provider, active in the CMS NPPES registry since April 5, 2016.
## Identity
- **NPI:** 1861855991 (Entity type: Individual)
- **Enumerated:** April 5, 2016
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** 0101267109 (Virginia)
- **Sole proprietor:** No
## Practice location
- **Address:** 750 BRUNSWICK AVE, Trenton, NJ 08638-4143
- **Phone:** (609) 394-6031
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Riverside Physician Services Inc (NPI 1790863645, Gloucester, VA); Lake Spring Physician Services, LLC (NPI 1568954287, Salem, VA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1998
## Record status
- **NPPES last updated:** May 10, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1861855991) · Data from the CMS NPPES public registry.