IndividualActive
Tiffany Marx
NPI 1194200444 · Clinical Social Worker · Seattle, WA
Tiffany Marx is a Clinical Social Worker provider in Seattle, WA (NPI 1194200444).
Provider details
- NPI number
- 1194200444
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(65/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
2600 Sw Holden St
Seattle, WA 98126-3505
Phone: (206) 933-7000
Street-level locationGet directions
Mailing address
3045 81st Pl Se Unit 6
Mercer Island, WA 98040-3678
Additional practice locations (1)
- 1025 S 3rd StRenton, WA 98057-2765Phone: (425) 271-5600
Registry dates
- Enumerated
- 2018-10-02
- Last updated
- 2022-12-27
- Certified
- 2022-12-27
Frequently asked questions
- What is Tiffany Marx's NPI number?
- Tiffany Marx's National Provider Identifier (NPI) is 1194200444, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tiffany Marx's specialty?
- Tiffany Marx is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Tiffany Marx located?
- Tiffany Marx's practice location on file with NPPES is 2600 Sw Holden St, Seattle, WA 98126-3505.
- What is Tiffany Marx's phone number?
- The practice phone number listed in the NPPES registry for Tiffany Marx is (206) 933-7000.
- Is Tiffany Marx's NPI active?
- Yes — Tiffany Marx's NPI (1194200444) is active in the NPPES registry as of the last update on 2022-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.