DR. KEITH ZAITOUN MD
NPI 1679567820
Internal Medicine - Nephrology in Portsmouth, VA
About Dr. Keith Zaitoun Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KEITH ZAITOUN MD (NPI 1679567820) is an individual nephrology provider in Portsmouth, Virginia, licensed in Virginia (0101039811) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS, is affiliated with Bon Secours Maryview Medical Center, and is a graduate of University Of Virginia School Of Medicine (1985).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
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. Keith Zaitoun 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 Reassignment
Medicare enrollment records show Keith Zaitoun reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Portsmouth, VA 23703
- Reassigned Medicare billing, Virginia enrollment
- 4 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 13
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Bon Secours Maryview Medical Center
Acute Care Hospitals · Portsmouth, VASentara Obici Hospital
Acute Care Hospitals · Suffolk, VABon Secours Southampton Memorial Hospital
Acute Care Hospitals · Franklin, VAChesapeake General Hospital
Acute Care Hospitals · Chesapeake, VAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 23703 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.
Reported Quality Measures
Referred Medical Equipment & Supplies CMS DME claims 4
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.
PORTSMOUTH, VA 23703
PORTSMOUTH, VA 23703
PORTSMOUTH, VA 23703
PORTSMOUTH, VA 23703
PORTSMOUTH, VA 23703
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 Zaitoun's NPI number?
The NPI number for Keith Zaitoun is 1679567820. It was assigned to this individual provider in the NPPES registry on September 2, 2005.
Where is Keith Zaitoun located?
Keith Zaitoun practices at 3235 Academy Ave Suite 301, Portsmouth, VA 23703. The listed phone number is (757) 484-9400.
What is Keith Zaitoun's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Keith Zaitoun enrolled in Medicare?
Yes. Keith Zaitoun 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 organization bills Medicare for Keith Zaitoun's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Keith Zaitoun reassigns Medicare benefits to Portsmouth Nephrology PC (Portsmouth, VA). The 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 Keith Zaitoun's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Keith Zaitoun affiliated with any hospitals?
According to CMS data, Keith Zaitoun is affiliated with Bon Secours Maryview Medical Center, Sentara Obici Hospital, Bon Secours Southampton Memorial Hospital and Chesapeake General Hospital.
When was this NPI record last updated?
The NPPES record for Keith Zaitoun was last updated on May 11, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.