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Marilyn Duff, MSW, LICSW
NPI 1871606814 · Clinical Social Worker · Tacoma, WA
Marilyn Duff, MSW, LICSW is a Clinical Social Worker provider in Tacoma, WA (NPI 1871606814).
Provider details
- NPI number
- 1871606814
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- MSW, LICSW
- Sex
- Female
- Sole proprietor
- No
- License
- LW00007888 (WA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(91/100 index)
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
9600 Veterans Dr Sw
Poc , Bldg 61c
Tacoma, WA 98493-5000
Phone: (253) 583-1648
Street-level locationGet directions
Mailing address
2834 Calais Ln Nw
Olympia, WA 98502-3928
Registry dates
- Enumerated
- 2006-08-16
- Last updated
- 2007-07-08
Frequently asked questions
- What is Marilyn Duff's NPI number?
- Marilyn Duff's National Provider Identifier (NPI) is 1871606814, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilyn Duff's specialty?
- Marilyn Duff is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Marilyn Duff located?
- Marilyn Duff's practice location on file with NPPES is 9600 Veterans Dr Sw, Tacoma, WA 98493-5000.
- What is Marilyn Duff's phone number?
- The practice phone number listed in the NPPES registry for Marilyn Duff is (253) 583-1648.
- Is Marilyn Duff's NPI active?
- Yes — Marilyn Duff's NPI (1871606814) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.