Douglas Calkin
NPI 1134468119 · Addiction (Substance Use Disorder) Counselor · Napa, CA
Douglas Calkin is a Addiction (Substance Use Disorder) Counselor provider in Napa, CA (NPI 1134468119).
Provider details
- NPI number
- 1134468119
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- Yes
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
13 yrs in NPPES registry
- Profile completeness38% of score
83% 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
- 2013-02-11
- Last updated
- 2013-02-11
Frequently asked questions
- What is Douglas Calkin's NPI number?
- Douglas Calkin's National Provider Identifier (NPI) is 1134468119, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Calkin's specialty?
- Douglas Calkin is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Douglas Calkin located?
- Douglas Calkin's practice location on file with NPPES is 2100 Napa Vallejo Hwy, Napa, CA 94558-6234.
- What is Douglas Calkin's phone number?
- The practice phone number listed in the NPPES registry for Douglas Calkin is (707) 257-7395.
- Is Douglas Calkin's NPI active?
- Yes — Douglas Calkin's NPI (1134468119) is active in the NPPES registry as of the last update on 2013-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.