John Gregg, DDS
NPI 1639160575 · Oral and Maxillofacial Surgery (Dentist) · Blacksburg, VA
John Gregg, DDS is a Oral and Maxillofacial Surgery (Dentist) provider in Blacksburg, VA (NPI 1639160575).
Provider details
- NPI number
- 1639160575
- Entity type
- Individual
- Primary specialty
- Oral and Maxillofacial Surgery (Dentist)Dental Providers
- Credential
- DDS
- Sex
- Male
- License
- 0401005828 (VA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-31
- Last updated
- 2007-07-08
Frequently asked questions
- What is John Gregg's NPI number?
- John Gregg's National Provider Identifier (NPI) is 1639160575, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Gregg's specialty?
- John Gregg is listed in the NPPES registry with a primary specialty of Oral and Maxillofacial Surgery (Dentist) (Dental Providers).
- Where is John Gregg located?
- John Gregg's practice location on file with NPPES is 100 Professional Park Dr Se, Blacksburg, VA 24060-6665.
- What is John Gregg's phone number?
- The practice phone number listed in the NPPES registry for John Gregg is (540) 951-8777.
- Is John Gregg's NPI active?
- Yes — John Gregg's NPI (1639160575) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.