What is Sonia Grutzius's NPI number?

Sonia Grutzius's National Provider Identifier (NPI) is 1013857499, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Sonia Grutzius's specialty?

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

Where is Sonia Grutzius located?

Sonia Grutzius's practice location on file with NPPES is 4800 Sand Point Way Ne, Seattle, WA 98105-3901.

What is Sonia Grutzius's phone number?

The practice phone number listed in the NPPES registry for Sonia Grutzius is (206) 987-2525.

Is Sonia Grutzius's NPI active?

Yes — Sonia Grutzius's NPI (1013857499) is active in the NPPES registry as of the last update on 2026-05-11.

IndividualActive

Sonia Grutzius

NPI 1013857499 · Pediatrics Physician · Seattle, WA

Sonia Grutzius is a Pediatrics Physician provider in Seattle, WA (NPI 1013857499).

Provider details

NPI number: 1013857499
Entity type: Individual
Primary specialty: Pediatrics PhysicianAllopathic & Osteopathic Physicians
Sex: Female
Sole proprietor: No
License: MDRE.ML.70115681 (WA)

Specialties & taxonomies

Pediatrics PhysicianPrimary208000000XLicense MDRE.ML.70115681 (WA)
Allopathic & Osteopathic Physicians

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

4800 Sand Point Way Ne

Seattle, WA 98105-3901

Phone: (206) 987-2525

Street-level locationGet directions

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Mailing address