John Sparks, M.D.
NPI 1609905223 · Hospitalist Physician · Seattle, WA
John Sparks, M.D. is a Hospitalist Physician provider in Seattle, WA (NPI 1609905223).
Provider details
- NPI number
- 1609905223
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- MD00032300 (WA)
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
19 yrs in NPPES registry
- Profile completeness38% of score
100% 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
Mailing address
Additional practice locations (1)
- 201 16th Ave ESeattle, WA 98112-5226Phone: (206) 326-3000
Registry dates
- Enumerated
- 2007-03-02
- Last updated
- 2021-05-06
- Certified
- 2021-05-06
Frequently asked questions
- What is John Sparks's NPI number?
- John Sparks's National Provider Identifier (NPI) is 1609905223, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Sparks's specialty?
- John Sparks is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is John Sparks located?
- John Sparks's practice location on file with NPPES is 1100 9th Ave, Seattle, WA 98101-2756.
- What is John Sparks's phone number?
- The practice phone number listed in the NPPES registry for John Sparks is (206) 223-6600.
- Is John Sparks's NPI active?
- Yes — John Sparks's NPI (1609905223) is active in the NPPES registry as of the last update on 2021-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.