What is Fiona Isaku's NPI number?

Fiona Isaku's National Provider Identifier (NPI) is 1609703644, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Fiona Isaku's specialty?

Fiona Isaku is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).

Where is Fiona Isaku located?

Fiona Isaku's practice location on file with NPPES is 100 N East Ave, Waukesha, WI 53186-3103.

What is Fiona Isaku's phone number?

The practice phone number listed in the NPPES registry for Fiona Isaku is (262) 524-7373.

Is Fiona Isaku's NPI active?

Yes — Fiona Isaku's NPI (1609703644) is active in the NPPES registry as of the last update on 2026-05-05.

IndividualActive

Fiona Isaku

NPI 1609703644 · Physician Assistant · Waukesha, WI

Fiona Isaku is a Physician Assistant provider in Waukesha, WI (NPI 1609703644).

Provider details

NPI number: 1609703644
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Sole proprietor: No

Specialties & taxonomies

Physician AssistantPrimary363A00000X
Physician Assistants & Advanced Practice Nursing 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

100 N East Ave

Waukesha, WI 53186-3103

Phone: (262) 524-7373

Street-level locationGet directions

More WI providers

Mailing address