IndividualActive
Donald Tweedie
NPI 1952744401 · Clinical Psychologist · Lancaster, CA
Donald Tweedie is a Clinical Psychologist provider in Lancaster, CA (NPI 1952744401).
Provider details
- NPI number
- 1952744401
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- PSY8090 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(78/100 index)
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
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
44750 60th St W
Lancaster, CA 93536-7619
Phone: (916) 691-0346
Fax: (916) 691-0534
Street-level locationGet directions
Mailing address
Po Box 391744
Anza, CA 92539-1744
Registry dates
- Enumerated
- 2013-04-15
- Last updated
- 2013-04-15
Frequently asked questions
- What is Donald Tweedie's NPI number?
- Donald Tweedie's National Provider Identifier (NPI) is 1952744401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Donald Tweedie's specialty?
- Donald Tweedie is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Donald Tweedie located?
- Donald Tweedie's practice location on file with NPPES is 44750 60th St W, Lancaster, CA 93536-7619.
- What is Donald Tweedie's phone number?
- The practice phone number listed in the NPPES registry for Donald Tweedie is (916) 691-0346.
- Is Donald Tweedie's NPI active?
- Yes — Donald Tweedie's NPI (1952744401) is active in the NPPES registry as of the last update on 2013-04-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.