Kathy Brostoff, M.D.
NPI 1366586968 · Geriatric Medicine (Internal Medicine) Physician · Seattle, WA
Kathy Brostoff, M.D. is a Geriatric Medicine (Internal Medicine) Physician provider in Seattle, WA (NPI 1366586968).
Provider details
- NPI number
- 1366586968
- Entity type
- Individual
- Primary specialty
- Geriatric Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- G00063630 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
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
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
Registry dates
- Enumerated
- 2007-02-16
- Last updated
- 2015-10-06
Frequently asked questions
- What is Kathy Brostoff's NPI number?
- Kathy Brostoff's National Provider Identifier (NPI) is 1366586968, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kathy Brostoff's specialty?
- Kathy Brostoff is listed in the NPPES registry with a primary specialty of Geriatric Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Kathy Brostoff located?
- Kathy Brostoff's practice location on file with NPPES is 720 Olive Way, Seattle, WA 98101-1830.
- What is Kathy Brostoff's phone number?
- The practice phone number listed in the NPPES registry for Kathy Brostoff is (206) 613-8821.
- Is Kathy Brostoff's NPI active?
- Yes — Kathy Brostoff's NPI (1366586968) is active in the NPPES registry as of the last update on 2015-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.