Gregory Joynes
NPI 1235502899 · Addiction (Substance Use Disorder) Counselor · Rockville, MD
Gregory Joynes is a Addiction (Substance Use Disorder) Counselor provider in Rockville, MD (NPI 1235502899).
Provider details
- NPI number
- 1235502899
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- SC0121 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2015-11-04
- Last updated
- 2015-11-04
Frequently asked questions
- What is Gregory Joynes's NPI number?
- Gregory Joynes's National Provider Identifier (NPI) is 1235502899, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gregory Joynes's specialty?
- Gregory Joynes is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Gregory Joynes located?
- Gregory Joynes's practice location on file with NPPES is 981 Rollins Ave, Rockville, MD 20852-5615.
- What is Gregory Joynes's phone number?
- The practice phone number listed in the NPPES registry for Gregory Joynes is (240) 777-1690.
- Is Gregory Joynes's NPI active?
- Yes — Gregory Joynes's NPI (1235502899) is active in the NPPES registry as of the last update on 2015-11-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.