Katharine Joo
NPI 1326380981 · Psychiatry Physician · Seattle, WA
Katharine Joo is a Psychiatry Physician provider in Seattle, WA (NPI 1326380981).
Provider details
- NPI number
- 1326380981
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Sex
- Female
- Sole proprietor
- No
- License
- A149747 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2013-03-21
- Last updated
- 2026-03-23
- Certified
- 2026-03-23
Frequently asked questions
- What is Katharine Joo's NPI number?
- Katharine Joo's National Provider Identifier (NPI) is 1326380981, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katharine Joo's specialty?
- Katharine Joo is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Katharine Joo located?
- Katharine Joo's practice location on file with NPPES is 3715 S Hudson St, Seattle, WA 98118-2167.
- What is Katharine Joo's phone number?
- The practice phone number listed in the NPPES registry for Katharine Joo is (206) 923-9259.
- Is Katharine Joo's NPI active?
- Yes — Katharine Joo's NPI (1326380981) is active in the NPPES registry as of the last update on 2026-03-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.