Gary Greenhood, M.D.
NPI 1417220633 · Infectious Disease Physician · Marietta, GA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gary Greenhood, M.D. is a Infectious Disease Physician provider in Marietta, GA (NPI 1417220633).
Provider details
- NPI number
- 1417220633
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20438 (GA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 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
- 2012-02-18
- Last updated
- 2012-02-18
Frequently asked questions
- What is Gary Greenhood's NPI number?
- Gary Greenhood's National Provider Identifier (NPI) is 1417220633, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gary Greenhood's specialty?
- Gary Greenhood is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Gary Greenhood located?
- Gary Greenhood's practice location on file with NPPES is 2471 Regency Lake Dr, Marietta, GA 30062-8410.
- What is Gary Greenhood's phone number?
- The practice phone number listed in the NPPES registry for Gary Greenhood is (770) 578-9922.
- Does Gary Greenhood accept Medicare?
- Gary Greenhood is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gary Greenhood's NPI active?
- Yes — Gary Greenhood's NPI (1417220633) is active in the NPPES registry as of the last update on 2012-02-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.