IndividualActive

Katherine Ziwisky

NPI 1811399660 · Physician Assistant · Renton, WA

Provider details

NPI number: 1811399660
Entity type: Individual
Primary specialty: Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
Sex: Female
Sole proprietor: No
License: 085005136 (IL)

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense PA61249152 (WA)
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistant363A00000XLicense 085005136 (IL)
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistant363A00000XLicense 53336 (CA)
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Established profile(63/100 index)

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

Registry tenure28% of score
11 yrs in NPPES registry
Profile completeness28% of score
100% of core fields populated
Practice footprint17% of score
2 documented practice locations
Medicare service volume (vs. specialty peers)28% of score
208 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. 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.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	106	$66
Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223	34	$145
Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214	29	$87
Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231	25	$40
Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213	14	$59

Typical Medicare-allowed amounts for these services range $40–$145 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Practice location

4033 Talbot Rd S Ste 570

Renton, WA 98055-5700

Phone: (425) 690-3487

Fax: (425) 690-9087

Street-level locationGet directions

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Mailing address