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DR. JAY N. GREENBERG M.D.
NPI 1396723359
Pediatrics - Pediatric Hematology-Oncology in Fairfax, VA

Active since January 09, 2006PECOS Enrolled
8301 ARLINGTON BLVD, SUITE 209, FAIRFAX, VA 22031(703) 876-9111(703) 698-8338 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Jay N. Greenberg M.d. NPPES

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

DR. JAY N. GREENBERG M.D. (NPI 1396723359) is an individual pediatric hematology-oncology provider in Fairfax, Virginia, licensed in Virginia (0101040287) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1396723359
Entity TypeIndividualMale
Primary Taxonomy2080P0207X
Provider Legal NameDR. JAY N. GREENBERGCredential: M.D.
Location Address8301 ARLINGTON BLVD, SUITE 209Fairfax, VA 22031-2902
Mailing Address8301 Arlington Blvd, Suite 209Fairfax, VA 22031-2902 · (703) 876-9111 · Fax (703) 698-8338
Phone(703) 876-9111
Fax(703) 698-8338
Sole ProprietorNo
Enumeration DateJanuary 9, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1396723359 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
License✔ Licensed in VA · 0101040287
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
8301 ARLINGTON BLVD, Fairfax, VA 22031
Open in Google Maps ↗

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Jay N. Greenberg M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Jay Greenberg reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Children's Hospital
13 mi
Pediatrics
111 MICHIGAN AVE NW
Washington, DC 20010
  • Reassigned Medicare billing, District of Columbia enrollment
  • 1,417 clinicians in this Medicare group
NPI 1780800128 (202) 476-5000

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

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.

MRS. CAROLYN MARIE LIBERT MSPT
Physical Therapist
8301 ARLINGTON BLVD, SUITE 102
FAIRFAX, VA 22031
Fairfax County (703) 207-8315
PHYSIOTHERAPY ASSOCIATES INC
Clinic/Center (Rehabilitation)
8301 ARLINGTON BLVD, SUITE 209
FAIRFAX, VA 22031
Fairfax County (703) 207-8513
DR. TANYA HUSSEIN DRUMMOND D.D.S.
Dentist (General Practice)
8301 ARLINGTON BLVD, SUITE 503
FAIRFAX, VA 22031
Fairfax County (703) 560-1660
DR. ZHOU'S CLINIC, PLLC
Exclusive Provider Organization
8301 ARLINGTON BLVD, SUITE 309
FAIRFAX, VA 22031
Fairfax County (703) 303-2543
FAIRFAX PULMONARY & CRITICAL CARE GROUP LLC
Internal Medicine (Pulmonary Disease)
8301 ARLINGTON BLVD, SUITE T5
FAIRFAX, VA 22031
Fairfax County (703) 208-2273
DR. CAROL LYNN PIATT M.D.
Specialist
8301 ARLINGTON BLVD, SUITE 501
FAIRFAX, VA 22031
Fairfax County (703) 560-3372
ALEXIA IRIS CARBALLO
Audiologist-Hearing Aid Fitter
8301 ARLINGTON BLVD, STE 302
FAIRFAX, VA 22031
Fairfax County (703) 204-1142
MS. HODA K MAKKAWI M.D.
General Practice
8301 ARLINGTON BLVD, SUITE 100
FAIRFAX, VA 22031
Fairfax County (703) 849-0900

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 Jay Greenberg's NPI number?

The NPI number for Jay Greenberg is 1396723359. It was assigned to this individual provider in the NPPES registry on January 9, 2006.

Where is Jay Greenberg located?

Jay Greenberg practices at 8301 Arlington Blvd Suite 209, Fairfax, VA 22031. The listed phone number is (703) 876-9111.

What is Jay Greenberg's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Is Jay Greenberg enrolled in Medicare?

Yes. Jay Greenberg is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jay Greenberg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jay Greenberg reassigns Medicare benefits to Children's Hospital (Washington, DC). 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 Jay Greenberg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Jay Greenberg was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.