What is Clark Isaac's NPI number?

Clark Isaac's National Provider Identifier (NPI) is 1811831472, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Clark Isaac's specialty?

Clark Isaac is listed in the NPPES registry with a primary specialty of Peer Specialist (Other Service Providers).

Where is Clark Isaac located?

Clark Isaac's practice location on file with NPPES is 2100 24th Ave S, Seattle, WA 98144-4637.

What is Clark Isaac's phone number?

The practice phone number listed in the NPPES registry for Clark Isaac is (206) 382-5340.

Is Clark Isaac's NPI active?

Yes — Clark Isaac's NPI (1811831472) is active in the NPPES registry as of the last update on 2026-04-15.

IndividualActive

Clark Isaac

NPI 1811831472 · Peer Specialist · Seattle, WA

Clark Isaac is a Peer Specialist provider in Seattle, WA (NPI 1811831472).

Provider details

NPI number: 1811831472
Entity type: Individual
Primary specialty: Peer SpecialistOther Service Providers
Sex: Male
Sole proprietor: Yes

Specialties & taxonomies

Peer SpecialistPrimary175T00000X
Other Service Providers

Profile Score

Basic profile(46/100 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
83% 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

2100 24th Ave S

Seattle, WA 98144-4637

Phone: (206) 382-5340

Street-level locationGet directions

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Mailing address