Charles E. Streff
NPI 1700921673 · Clinical Psychologist · Acton, MA
Charles E. Streff is a Clinical Psychologist organization in Acton, MA (NPI 1700921673).
Provider details
- NPI number
- 1700921673
- Entity type
- Organization
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Organization subpart
- No
- Authorized official
- Charles Streff, Owner(978) 263-0439
Specialties & taxonomies
Behavioral Health & Social Service Providers
- Psychologist103T00000X
Behavioral Health & Social Service Providers
Nursing Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
Other names (DBA / former)
- Doing business as
- Streff Associates
Registry dates
- Enumerated
- 2007-02-20
- Last updated
- 2007-07-20
Frequently asked questions
- What is Charles E. Streff's NPI number?
- Charles E. Streff's National Provider Identifier (NPI) is 1700921673, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Charles E. Streff?
- Charles E. Streff is classified in the NPPES registry as Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Charles E. Streff located?
- Charles E. Streff's practice location on file with NPPES is 532 Great Rd, Acton, MA 01720-3415.
- What is Charles E. Streff's phone number?
- The practice phone number listed in the NPPES registry for Charles E. Streff is (978) 263-0439.
- Who is the authorized official for Charles E. Streff?
- The authorized official listed on Charles E. Streff's NPPES record is Charles Streff, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Charles E. Streff's NPI active?
- Yes — Charles E. Streff's NPI (1700921673) is active in the NPPES registry as of the last update on 2007-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.