DR. JOHN ALVA SIMPSON MD
NPI 1417049347
Allergy & Immunology in Falls Church, VA

Q: What is John Simpson's NPI number?

The NPI number for John Simpson is 1417049347. It was assigned to this individual provider in the NPPES registry on September 28, 2006.

Q: What is John Simpson's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

Q: When was this NPI record last updated?

The NPPES record for John Simpson was last updated on November 16, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.

Active since September 28, 2006

6305 CASTLE PL, SUITE 2D, FALLS CHURCH, VA 22044(703) 534-5500(703) 534-4838 Get Directions Write a Review

NPPES record last updated: November 16, 2015. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. John Alva Simpson Md NPPES

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

DR. JOHN ALVA SIMPSON MD (NPI 1417049347) is an individual allergy & immunology provider in Falls Church, Virginia, licensed in Virginia (0101045826) and active in the NPI registry since September 2006.

NPPES Registry Identity

NPI1417049347

Entity TypeIndividualMale

Primary Taxonomy207K00000X

Provider Legal NameDR. JOHN ALVA SIMPSONCredential: MD

Location Address6305 CASTLE PL, SUITE 2DFalls Church, VA 22044-1905

Mailing AddressPo Box 1987Skyland, NC 28776-1987 · (828) 575-2644 · Fax (828) 350-2174

Phone(703) 534-5500

Fax(703) 534-4838

Sole ProprietorNo

Enumeration DateSeptember 28, 2006

Last NPPES UpdateNovember 16, 2015

✔ NPI 1417049347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAllergy & ImmunologyAllopathic & Osteopathic Physicians

Taxonomy Code207K00000X

License✔ Licensed in VA · 0101045826

Definition

An allergist-immunologist is trained in evaluation, physical and laboratory diagnosis, and management of disorders involving the immune system. Selected examples of such conditions include asthma, anaphylaxis, rhinitis, eczema, and adverse reactions to drugs, foods, and insect stings as well as immune deficiency diseases (both acquired and congenital), defects in host defense, and problems related to autoimmune disease, organ transplantation, or malignancies of the immune system.

6305 CASTLE PL, Falls Church, VA 22044

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Other Identifiers 4

Other274694Anthem

Other2307287Aetna

Medicare UPINE96022

Other684263ZKRDVA · Medicare Ptan

Other Providers at the Same Location NPPES 8

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. FAROOK A. SHAIKH M.D.

Internal Medicine (Addiction Medicine)

6305 CASTLE PL, SUITE 3C
FALLS CHURCH, VA 22044

Fairfax County (703) 241-2408

HAN TON-THAT, M.D., P.C.

Clinic/Center

6305 CASTLE PL, SUITE 1-A
FALLS CHURCH, VA 22044

Fairfax County (703) 534-9090

PRESTERA OPTICAL INC.

Durable Medical Equipment & Medical Supplies

6305 CASTLE PL
FALLS CHURCH, VA 22044

Fairfax County (703) 534-5464

RACKENFUSE HEALTH, LLC

Clinic/Center (Primary Care)

6305 CASTLE PL, SUITE 1D
FALLS CHURCH, VA 22044

Fairfax County (703) 533-5555

DR. KENNETH WILLIAM BERGER M.D.

Allergy & Immunology

6305 CASTLE PL, SUITE 2D
FALLS CHURCH, VA 22044

Fairfax County (703) 534-5500

DR. GARY DAVIS JR. D.C.

Chiropractor

6305 CASTLE PL, SUITE 1D
FALLS CHURCH, VA 22044

Fairfax County (703) 533-5555

MINOO MCFARLAND FNP

Nurse Practitioner (Family)

6305 CASTLE PL, SUITE 2D
FALLS CHURCH, VA 22044

Fairfax County (703) 534-5500

DR. MICHELLE LANIECE FUSELIER M.D.

Family Medicine

6305 CASTLE PL, SUITE 1D
FALLS CHURCH, VA 22044

Fairfax County (703) 533-5555

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 John Simpson's NPI number?

The NPI number for John Simpson is 1417049347. It was assigned to this individual provider in the NPPES registry on September 28, 2006.

Where is John Simpson located?

John Simpson practices at 6305 Castle Pl Suite 2D, Falls Church, VA 22044. The listed phone number is (703) 534-5500.

What is John Simpson's specialty?

The primary specialty registered for this NPI is Allergy & Immunology with taxonomy code 207K00000X.

When was this NPI record last updated?

The NPPES record for John Simpson was last updated on November 16, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.