Diane Friedhoff
NPI 1144854126 · Clinical Social Worker · Seattle, WA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Diane Friedhoff is a Clinical Social Worker provider in Seattle, WA (NPI 1144854126).
Provider details
- NPI number
- 1144854126
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- LW61282449 (WA)
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
6 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
- 2020-02-27
- Last updated
- 2023-03-01
- Certified
- 2023-03-01
Frequently asked questions
- What is Diane Friedhoff's NPI number?
- Diane Friedhoff's National Provider Identifier (NPI) is 1144854126, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diane Friedhoff's specialty?
- Diane Friedhoff is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Diane Friedhoff located?
- Diane Friedhoff's practice location on file with NPPES is 2671 Ne 46th St, Seattle, WA 98105-5041.
- What is Diane Friedhoff's phone number?
- The practice phone number listed in the NPPES registry for Diane Friedhoff is (206) 525-8000.
- Does Diane Friedhoff accept Medicare?
- Diane Friedhoff is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Diane Friedhoff's NPI active?
- Yes — Diane Friedhoff's NPI (1144854126) is active in the NPPES registry as of the last update on 2023-03-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.