Donald Siddell, LICSW
NPI 1477919660 · Clinical Social Worker · South Dennis, MA
Donald Siddell, LICSW is a Clinical Social Worker provider in South Dennis, MA (NPI 1477919660).
Provider details
- NPI number
- 1477919660
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LICSW
- Sex
- Male
- Sole proprietor
- Yes
- License
- 105308 (MA)
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
- 2016-01-05
- Last updated
- 2016-01-05
Frequently asked questions
- What is Donald Siddell's NPI number?
- Donald Siddell's National Provider Identifier (NPI) is 1477919660, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Siddell's specialty?
- Donald Siddell is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Donald Siddell located?
- Donald Siddell's practice location on file with NPPES is 7 Greenland Cir, South Dennis, MA 02660-2414.
- What is Donald Siddell's phone number?
- The practice phone number listed in the NPPES registry for Donald Siddell is (508) 385-5256.
- Is Donald Siddell's NPI active?
- Yes — Donald Siddell's NPI (1477919660) is active in the NPPES registry as of the last update on 2016-01-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.