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PORTSMOUTH NEPHROLOGY PC
NPI 1972616738
Internal Medicine - Nephrology in Portsmouth, VA

Active since August 16, 2006CLIA 49D0669108 · Microscopy
3235 ACADEMY AVE, SUITE 301, PORTSMOUTH, VA 23703(757) 484-9400 Get Directions Write a Review

NPPES record last updated: May 11, 2020. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: May 11, 2020, Jul 23, 2019 (2 updates tracked since 2019).

About Portsmouth Nephrology Pc NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

PORTSMOUTH NEPHROLOGY PC (NPI 1972616738) is a healthcare organization registered as a nephrology in Portsmouth, Virginia and active in the NPI registry since August 2006. The organization holds a CLIA Microscopy certificate valid through August 31, 2028 and lists Keith Zaitoun, President, as its authorized official.

NPPES Registry Identity

NPI1972616738
Entity TypeOrganization
Primary Taxonomy207RN0300X
Legal Business NamePORTSMOUTH NEPHROLOGY PC
Location Address3235 ACADEMY AVE, SUITE 301Portsmouth, VA 23703
Mailing Address3235 Academy Ave, Suite 301Portsmouth, VA 23703 · (757) 484-9400 · Fax (757) 484-8809
Phone(757) 484-9400
Organization SubpartNo
Authorized OfficialKeith ZaitounPresident · (757) 484-9400
Enumeration DateAugust 16, 2006
Last NPPES UpdateMay 11, 20202 updates tracked since enumeration
NPPES CertifiedMay 11, 2020
✔ NPI 1972616738 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians
Taxonomy Code207RN0300X
Definition
An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.
3235 ACADEMY AVE, Portsmouth, VA 23703
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Portsmouth Nephrology Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Portsmouth Nephrology PC, which bills Medicare for the services they deliver. Of these, 4 practice at this address. They are listed nearest first.

Clinicians, nearest first (4)

Chinyere Osuchukwu, NP-C
Nurse Practitioner
NPI 1346773983
3235 ACADEMY AVE STE 301
Portsmouth, VA 23703
(757) 484-9400
✔ PECOS✔ Accepts MedicareSame address
Krunal Patel, MD
Nephrology
NPI 1235393059
3235 ACADEMY AVE SUITE 301
Portsmouth, VA 23703
(757) 484-9400
✔ PECOS✔ Accepts MedicareSame address
Amaresh Vanga, M.D.
Nephrology
NPI 1265421275
3235 ACADEMY AVE STE 301
Portsmouth, VA 23703
(757) 484-9400
✔ PECOS✔ Accepts MedicareSame address
Keith Zaitoun, MD
Nephrology
NPI 1679567820
3235 ACADEMY AVE SUITE 301
Portsmouth, VA 23703
(757) 484-9400
✔ PECOS✔ Accepts MedicareSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate for Provider-Performed Microscopy Procedures (PPMP) 49D0669108

Portsmouth Nephrology PC · Portsmouth, VA
Active · expires Aug 31, 2028
CLIA Number49D0669108
Laboratory TypePhysician Office
Certificate Effective DateSeptember 1, 2026
Certificate Expiration DateAugust 31, 2028
Laboratory DirectorKeith A. Zaitoun
Laboratory Phone(757) 484-9400
Laboratory LocationPortsmouth Nephrology PC3235 Academy Avenue Suite 301, Portsmouth, VA 23703
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory in which a physician, midlevel practitioner or dentist performs no tests other than the microscopy procedures. This certificate permits the laboratory to also perform waived tests.

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 Portsmouth Nephrology PC's NPI number?

The NPI number for Portsmouth Nephrology PC is 1972616738. It was assigned to this organization in the NPPES registry on August 16, 2006.

Where is Portsmouth Nephrology PC located?

Portsmouth Nephrology PC is located at 3235 Academy Ave Suite 301, Portsmouth, VA 23703. The listed phone number is (757) 484-9400.

What is Portsmouth Nephrology PC's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Portsmouth Nephrology PC enrolled in Medicare?

Yes. Portsmouth Nephrology PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Portsmouth Nephrology PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Portsmouth Nephrology PC. A 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 the clinician's services. The largest specialties are Nephrology (3) and Nurse Practitioner (1). Of these, 4 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does Portsmouth Nephrology PC hold a CLIA laboratory certificate?

Yes. A Certificate for Provider-Performed Microscopy Procedures (PPMP) (number 49D0669108) is associated with this NPI, valid through August 31, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Portsmouth Nephrology PC 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.