What is Jill Cook's NPI number?

Jill Cook's National Provider Identifier (NPI) is 1134233604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Jill Cook's specialty?

Jill Cook is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).

Where is Jill Cook located?

Jill Cook's practice location on file with NPPES is 201 16th Ave E, Seattle, WA 98112-5226.

What is Jill Cook's phone number?

The practice phone number listed in the NPPES registry for Jill Cook is (206) 326-3000.

Does Jill Cook accept Medicare?

Jill Cook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Jill Cook's NPI active?

Yes — Jill Cook's NPI (1134233604) is active in the NPPES registry as of the last update on 2025-01-10.

IndividualActiveAccepts Medicare

Jill Cook, MD

NPI 1134233604 · Pediatrics Physician · Seattle, WA

Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Jill Cook, MD is a Pediatrics Physician provider in Seattle, WA (NPI 1134233604).

Provider details

NPI number: 1134233604
Entity type: Individual
Primary specialty: Pediatrics PhysicianAllopathic & Osteopathic Physicians
Credential: MD
Sex: Female
Sole proprietor: No
License: 134700 (MT)

Specialties & taxonomies

Pediatrics PhysicianPrimary208000000XLicense MD60082859 (WA)
Allopathic & Osteopathic Physicians
Pediatrics Physician208000000XLicense 134700 (MT)
Allopathic & Osteopathic Physicians
Pediatrics Physician208000000XLicense MD174619 (OR)
Allopathic & Osteopathic Physicians

Profile Score

Detailed profile(100/100 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
3 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

201 16th Ave E

Seattle, WA 98112-5226

Phone: (206) 326-3000

Street-level locationGet directions

More WA providers

Mailing address

Po Box 2429

Lynnwood, WA 98036-2429

Additional practice locations (2)

1101 26th St S
Great Falls, MT 59405-5161
Phone: (406) 731-8888
Fax: (406) 731-8318
2901 Squalicum Pkwy
Bellingham, WA 98225-1851
Phone: (360) 738-2200

Enumerated: 2006-08-19
Last updated: 2025-01-10
Certified: 2025-01-10

Frequently asked questions

What is Jill Cook's NPI number?: Jill Cook's National Provider Identifier (NPI) is 1134233604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Jill Cook's specialty?: Jill Cook is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
Where is Jill Cook located?: Jill Cook's practice location on file with NPPES is 201 16th Ave E, Seattle, WA 98112-5226.
What is Jill Cook's phone number?: The practice phone number listed in the NPPES registry for Jill Cook is (206) 326-3000.
Does Jill Cook accept Medicare?: Jill Cook is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Jill Cook's NPI active?: Yes — Jill Cook's NPI (1134233604) is active in the NPPES registry as of the last update on 2025-01-10.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.