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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

DR. JOHN MARSHALL GREGG DDS
NPI 1639160575
Dentist - Oral and Maxillofacial Surgery in Blacksburg, VA

Active since October 31, 2005
100 PROFESSIONAL PARK DR SE, SUITE 1, BLACKSBURG, VA 24060(540) 951-8777(540) 951-9642 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Dr. John Marshall Gregg Dds NPPES

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

DR. JOHN MARSHALL GREGG DDS (NPI 1639160575) is an individual oral and maxillofacial surgery provider in Blacksburg, Virginia, licensed in Virginia (0401005828) and active in the NPI registry since October 2005.

NPPES Registry Identity

NPI1639160575
Entity TypeIndividualMale
Primary Taxonomy1223S0112X
Provider Legal NameDR. JOHN MARSHALL GREGGCredential: DDS
Location Address100 PROFESSIONAL PARK DR SE, SUITE 1Blacksburg, VA 24060-6665
Mailing Address100 Professional Park Dr Se, Suite 1Blacksburg, VA 24060-6665 · (540) 951-8777 · Fax (540) 951-9642
Phone(540) 951-8777
Fax(540) 951-9642
Sole ProprietorNo
Enumeration DateOctober 31, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1639160575 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · Oral and Maxillofacial SurgeryDental Providers
Taxonomy Code1223S0112X
License✔ Licensed in VA · 0401005828
Definition

An oral and maxillofacial surgery dentist specialized in the diagnosis, surgical and adjunctive treatment of diseases, injuries and defects involving both the functional and esthetic aspects of the hard and soft tissues of the oral and maxillofacial region.

100 PROFESSIONAL PARK DR SE, Blacksburg, VA 24060
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Other Identifiers 1

Medicaid8017808VA

Other Providers at the Same Location NPPES 4

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

NRV ORAL & MAXILLOFACIAL SURGERY, LTD
Dentist (Oral and Maxillofacial Surgery)
100 PROFESSIONAL PARK DR SE, SUITE 1
BLACKSBURG, VA 24060
Montgomery County (540) 951-8777
JOE A. PAGET, JR. DDS LTD
Clinic/Center (Dental)
100 PROFESSIONAL PARK DR SE, SUITE #2
BLACKSBURG, VA 24060
Montgomery County (540) 951-9100
DR. CLINTON WILBUR HOWARD III DMD
Dentist (Oral and Maxillofacial Surgery)
100 PROFESSIONAL PARK DR SE, SUITE 1
BLACKSBURG, VA 24060
Montgomery County (540) 951-8777
DR. RICHARD PRENTICE BOYLE III DDS
Dentist (Oral and Maxillofacial Surgery)
100 PROFESSIONAL PARK DR SE, SUITE 1
BLACKSBURG, VA 24060
Montgomery County (540) 951-8777

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 Gregg's NPI number?

The NPI number for John Gregg is 1639160575. It was assigned to this individual provider in the NPPES registry on October 31, 2005.

Where is John Gregg located?

John Gregg practices at 100 Professional Park Dr SE Suite 1, Blacksburg, VA 24060. The listed phone number is (540) 951-8777.

What is John Gregg's specialty?

The primary specialty registered for this NPI is Dentist, specializing in Oral and Maxillofacial Surgery, with taxonomy code 1223S0112X.

When was this NPI record last updated?

The NPPES record for John Gregg was last updated on July 13, 2026. NPI Profile syncs with the weekly NPPES data releases published by CMS.